0.69.0

refactor: move to eslint
ci: add cobertura coverage report
2026-01-10 03:32:52 +00:00 · 2022-08-17 16:16:47 +02:00 · 2022-08-17 16:09:45 +02:00 · 2022-08-17 14:04:50 +02:00 · 2022-08-17 14:04:12 +02:00 · 2022-08-17 14:00:49 +02:00
106 changed files with 4926 additions and 3918 deletions
--- a/.eslintignore
+++ b/.eslintignore
@@ -0,0 +1,2 @@
+resources
+openapi
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -0,0 +1,29 @@
+{
+  "extends": "@openstapps",
+  "rules": {
+    "@typescript-eslint/no-empty-interface": "off",
+    "jsdoc/check-tag-names": [
+      "error",
+      {
+        "definedTags": [
+          "internal",
+          "aggregatable",
+          "float",
+          "indexable",
+          "integer",
+          "keyword",
+          "sortable",
+          "text",
+          "date",
+          "validatable",
+          "filterable",
+          "inheritTags",
+          "minLength",
+          "pattern",
+          "typeparam",
+          "TJS-format"
+        ]
+      }
+    ]
+  }
+}
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@ pids
 *.pid
 *.seed
 *.pid.lock
+.DS_Store

 # Directory for instrumented libs generated by jscoverage/JSCover
 lib-cov
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -83,10 +83,15 @@ test:
  stage: test
  script:
    - npm test
+  coverage: '/Statements[^:]*\:[^:]*\s+([\d\.]+)%/'
  artifacts:
    paths:
      - report
      - coverage
+    reports:
+      coverage_report:
+        coverage_format: cobertura
+        path: coverage/cobertura-coverage.xml

 mapping:
  tags:
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,96 @@
+# [0.68.0](https://gitlab.com/openstapps/core/compare/v0.67.0...v0.68.0) (2022-06-27)
+
+
+
+# [0.67.0](https://gitlab.com/openstapps/core/compare/v0.66.1...v0.67.0) (2022-05-31)
+
+
+
+## [0.66.1](https://gitlab.com/openstapps/core/compare/v0.66.0...v0.66.1) (2022-05-27)
+
+
+
+# [0.66.0](https://gitlab.com/openstapps/core/compare/v0.65.1...v0.66.0) (2022-05-11)
+
+
+### Features
+
+* add geo filter envelope support ([484be6a](https://gitlab.com/openstapps/core/commit/484be6a890d743601efa5d40d33ea2c619f3126d))
+
+
+
+## [0.65.1](https://gitlab.com/openstapps/core/compare/v0.65.0...v0.65.1) (2022-04-04)
+
+
+
+# [0.65.0](https://gitlab.com/openstapps/core/compare/v0.64.0...v0.65.0) (2022-04-04)
+
+
+
+# [0.64.0](https://gitlab.com/openstapps/core/compare/v0.63.0...v0.64.0) (2022-03-21)
+
+
+
+# [0.63.0](https://gitlab.com/openstapps/core/compare/v0.62.0...v0.63.0) (2022-01-24)
+
+
+### Bug Fixes
+
+* add auth object to index route ([e149931](https://gitlab.com/openstapps/core/commit/e14993114f0ec370775010eee4ad0d302a0beebb))
+
+
+
+# [0.62.0](https://gitlab.com/openstapps/core/compare/v0.61.0...v0.62.0) (2022-01-21)
+
+
+### Bug Fixes
+
+* add missing lastPublished to SCCreativeWork ([e0adb23](https://gitlab.com/openstapps/core/commit/e0adb2332ec24ce388c4c008b51b7aa941948532))
+
+
+
+# [0.61.0](https://gitlab.com/openstapps/core/compare/v0.60.0...v0.61.0) (2022-01-21)
+
+
+
+# [0.60.0](https://gitlab.com/openstapps/core/compare/v0.59.0...v0.60.0) (2022-01-21)
+
+
+
+# [0.59.0](https://gitlab.com/openstapps/core/compare/v0.58.0...v0.59.0) (2022-01-20)
+
+
+
+# [0.58.0](https://gitlab.com/openstapps/core/compare/v0.57.0...v0.58.0) (2022-01-18)
+
+
+
+# [0.57.0](https://gitlab.com/openstapps/core/compare/v0.56.0...v0.57.0) (2022-01-18)
+
+
+### Features
+
+* extend config to describe auth providers ([7553620](https://gitlab.com/openstapps/core/commit/7553620a5d330ebfb66461afeab700e36bd37165))
+
+
+
+# [0.56.0](https://gitlab.com/openstapps/core/compare/v0.55.0...v0.56.0) (2021-12-17)
+
+
+
+# [0.55.0](https://gitlab.com/openstapps/core/compare/v0.54.0...v0.55.0) (2021-12-15)
+
+
+
+# [0.54.0](https://gitlab.com/openstapps/core/compare/v0.53.0...v0.54.0) (2021-11-17)
+
+
+### Features
+
+* add SCAssessment ([7a2e0f2](https://gitlab.com/openstapps/core/commit/7a2e0f20d1c64ab1deb7ab30bfb4bab4daaabd6d))
+
+
+
 # [0.53.0](https://gitlab.com/openstapps/core/compare/v0.52.0...v0.53.0) (2021-10-19)


--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@openstapps/core",
-  "version": "0.54.0",
+  "version": "0.69.0",
  "description": "StAppsCore - Generalized model of data",
  "keywords": [
    "Model",
@@ -14,11 +14,11 @@
  "main": "./lib/index.js",
  "types": "./lib/index.d.ts",
  "scripts": {
-    "build": "npm run tslint && npm run compile && npm run pack && npm run schema && npm run mappings",
+    "build": "npm run lint && npm run compile && npm run pack && npm run schema && npm run mappings",
    "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0 && git add CHANGELOG.md && git commit -m 'docs: update changelog'",
    "check-configuration": "openstapps-configuration",
    "compile": "rimraf lib && tsc",
-    "documentation": "typedoc --name \"@openstapps/core\" --includeVersion --out docs --readme README.md --listInvalidSymbolLinks src",
+    "documentation": "typedoc --name \"@openstapps/core\" --includeVersion --out docs --readme README.md --listInvalidSymbolLinks --entryPointStrategy expand src",
    "pack": "openstapps-core-tools pack",
    "postversion": "npm run changelog",
    "prepublishOnly": "npm ci && npm run build",
@@ -27,8 +27,8 @@
    "schema": "node --max-old-space-size=8192 --stack-size=10240 ./node_modules/.bin/openstapps-core-tools schema src lib/schema",
    "mappings": "mkdir lib/mappings && openstapps-es-mapping-generator mapping ../core/src -i minlength,pattern,see,tjs-format -m lib/mappings/mappings.json -a lib/mappings/aggregations.json",
    "mappings-integration": "openstapps-es-mapping-generator put-es-templates lib/mappings/mappings.json http://elasticsearch:9200/",
-    "test": "nyc mocha --require ts-node/register --recursive 'test/*.spec.ts'",
-    "tslint": "tslint -p tsconfig.json -c tslint.json 'src/**/*.ts'"
+    "test": "nyc mocha --recursive 'test/*.spec.ts'",
+    "lint": "eslint --ext .ts src/"
  },
  "author": "Karl-Philipp Wulfert <krlwlfrt@gmail.com>",
  "contributors": [
@@ -42,43 +42,51 @@
    "Rainer Killinger <mail-openstapps@killinger.co>",
    "Roman Klopsch",
    "Sebastian Lange",
-    "Wieland Schöbl"
+    "Thea Schöbl"
  ],
  "dependencies": {
-    "@openstapps/core-tools": "0.25.0",
+    "@openstapps/core-tools": "0.32.0",
    "@types/geojson": "1.0.6",
    "@types/json-patch": "0.0.30",
-    "@types/json-schema": "7.0.9",
-    "@types/node": "14.17.9",
-    "fast-clone": "1.5.13",
+    "@types/json-schema": "7.0.11",
+    "@types/node": "14.18.24",
    "fast-deep-equal": "3.1.3",
-    "http-status-codes": "2.1.4",
+    "http-status-codes": "2.2.0",
    "json-patch": "0.7.0",
-    "json-schema": "0.3.0",
+    "json-schema": "0.4.0",
+    "rfdc": "1.3.0",
    "ts-optchain": "0.1.8"
  },
  "devDependencies": {
-    "@openstapps/configuration": "0.27.0",
-    "@openstapps/es-mapping-generator": "0.0.3",
-    "@openstapps/logger": "0.7.0",
-    "@testdeck/mocha": "0.1.2",
-    "@types/lodash": "4.14.172",
-    "@types/chai": "4.2.21",
-    "@types/rimraf": "3.0.1",
-    "@types/mocha": "8.2.3",
-    "chai": "4.3.4",
-    "conditional-type-checks": "1.0.5",
-    "conventional-changelog-cli": "2.1.1",
+    "@openstapps/configuration": "0.33.0",
+    "@openstapps/es-mapping-generator": "0.3.0",
+    "@openstapps/eslint-config": "1.1.0",
+    "@openstapps/logger": "1.0.0",
+    "@testdeck/mocha": "0.2.0",
+    "@types/chai": "4.3.3",
+    "@types/lodash": "4.14.182",
+    "@types/mocha": "9.1.1",
+    "@types/rimraf": "3.0.2",
+    "@typescript-eslint/eslint-plugin": "5.33.1",
+    "@typescript-eslint/parser": "5.33.1",
+    "chai": "4.3.6",
+    "conditional-type-checks": "1.0.6",
+    "conventional-changelog-cli": "2.2.2",
+    "eslint": "8.22.0",
+    "eslint-config-prettier": "8.5.0",
+    "eslint-plugin-jsdoc": "39.3.6",
+    "eslint-plugin-prettier": "4.2.1",
+    "eslint-plugin-unicorn": "43.0.2",
    "lodash": "4.17.21",
-    "mocha": "8.4.0",
+    "mocha": "10.0.0",
    "nyc": "15.1.0",
+    "prettier": "2.7.1",
    "rimraf": "3.0.2",
-    "source-map-support": "0.5.19",
-    "surge": "0.23.0",
-    "ts-node": "9.1.1",
-    "tslint": "6.1.3",
-    "typedoc": "0.21.6",
-    "typescript": "4.3.5"
+    "source-map-support": "0.5.21",
+    "surge": "0.23.1",
+    "ts-node": "10.9.1",
+    "typedoc": "0.22.18",
+    "typescript": "4.4.4"
  },
  "nyc": {
    "all": true,
@@ -100,6 +108,7 @@
    "lines": 95,
    "per-file": true,
    "reporter": [
+      "cobertura",
      "html",
      "text-summary"
    ],
--- a/src/config/app.ts
+++ b/src/config/app.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,11 +12,11 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-// tslint:disable-next-line:no-implicit-dependencies
 import {Polygon} from 'geojson';
 import {SCTranslations} from '../general/i18n';
 import {SCMap} from '../general/map';
 import {SCLanguageSetting, SCSetting, SCUserGroupSetting} from '../things/setting';
+import {SCFeatureConfiguration} from './feature';

 /**
 * An app configuration menu item
@@ -55,11 +55,7 @@ export interface SCAppConfigurationMenuCategory {
  /**
   * ID of the menu category
   */
-  id:
-    'main'
-    | 'meta'
-    | 'personal'
-    | 'external';
+  id: 'main' | 'meta' | 'personal' | 'external';

  /**
   * A list of items that belong to the category
@@ -94,9 +90,9 @@ export interface SCAppConfiguration {
  campusPolygon: Polygon;

  /**
-   * A list of features to en- or disable
+   * Maps of enabled features (plugins and external services)
   */
-  features: SCAppConfigurationFeature;
+  features: SCFeatureConfiguration;

  /**
   * A URL where images are available
@@ -135,16 +131,6 @@ export interface SCAppConfiguration {
  url?: string;
 }

-/**
- * Map of features
- */
-export interface SCAppConfigurationFeature {
-  /**
-   * Whether or not widgets are enabled
-   */
-  widgets: boolean;
-}
-
 /**
 * URLs of published apps
 */
--- a/src/config/authorization.ts
+++ b/src/config/authorization.ts
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2021-2022 Open StApps
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {SCUserConfigurationMap} from './user';
+
+/**
+ * Supported authorization provider types
+ *
+ * @see https://datatracker.ietf.org/doc/html/rfc6749#section-1.3.1
+ * @see https://github.com/gbv/paia
+ */
+export type SCAuthorizationProviderType = 'default' | 'paia';
+
+/**
+ * An authorization provider complete configuration
+ */
+export interface SCAuthorizationProvider {
+  /**
+   * An authorization provider client configuration
+   */
+  client: SCAuthorizationProviderClient;
+
+  /**
+   * An authorization provider endpoints configuration
+   */
+  endpoints: SCAuthorizationProviderEndpoints;
+}
+
+/**
+ * An authorization provider client configuration
+ */
+export interface SCAuthorizationProviderClient {
+  /**
+   * Client ID
+   */
+  clientId: string;
+
+  /**
+   * Scopes to request
+   */
+  scopes: string;
+
+  /**
+   * Main url to reach authorization provider
+   */
+  url: string;
+}
+
+/**
+ * An authorization provider endpoints configuration
+ */
+export interface SCAuthorizationProviderEndpoints {
+  /**
+   * URL to start authentication flow
+   */
+  authorization: string;
+
+  /**
+   * URL to end current session
+   */
+  endSession?: string;
+
+  /**
+   * Mapping of how to create SCUser from userinfo endpoint response (using JSONPath syntax)
+   *
+   * @see https://www.npmjs.com/package/jsonpath
+   */
+  mapping: SCUserConfigurationMap;
+
+  /**
+   * URL to revoke a token
+   */
+  revoke?: string;
+
+  /**
+   * URL to get access Token
+   */
+  token: string;
+
+  /**
+   * URL to general user info endpoint
+   */
+  userinfo: string;
+}
--- a/src/config/backend.ts
+++ b/src/config/backend.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -95,29 +95,25 @@ export interface SCBackendConfigurationSortableField {
   * A list of supported sorts on this field
   */
  sortTypes: SCSearchSortType[];
-
 }

 /**
 * Possible context names to be used by the search request
 */
-export type SCSearchContext =
-  | 'default'
-  | 'dining'
-  | 'place';
+export type SCSearchContext = 'default' | 'dining' | 'place';

 /**
 * A boosting configuration for one context
 */
-export type SCBackendConfigurationSearchBoostingContext =
-  SCRestrictedMap<SCSearchContext,
-    SCBackendConfigurationSearchBoostingType[]>;
+export type SCBackendConfigurationSearchBoostingContext = SCRestrictedMap<
+  SCSearchContext,
+  SCBackendConfigurationSearchBoostingType[]
+>;

 /**
 * A boosting configuration for one SCType
 */
 export interface SCBackendConfigurationSearchBoostingType {
-
  /**
   * The factor of which the scores matching this type should be multiplied by
   */
--- a/src/config/feature.ts
+++ b/src/config/feature.ts
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 Open StApps
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {SCMap} from '../general/map';
+import {SCAuthorizationProviderType} from './authorization';
+
+export interface SCFeatureConfiguration {
+  /**
+   * Map of extern services mapped by their name (statically)
+   */
+  extern?: SCMap<SCFeatureConfigurationExtern>;
+
+  /**
+   * Map of plugins registered with the backend mapped by their name.
+   */
+  plugins?: SCMap<SCFeatureConfigurationPlugin>;
+}
+
+export interface SCFeatureConfigurationPlugin {
+  /**
+   * URL path registered with the backend
+   */
+  urlPath: string;
+}
+
+export interface SCFeatureConfigurationExtern {
+  /**
+   * Key of authorization provider available in SCConfigFile
+   */
+  authProvider?: SCAuthorizationProviderType;
+
+  /**
+   * URL of extern service
+   */
+  url: string;
+}
--- a/src/config/file.ts
+++ b/src/config/file.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -14,19 +14,25 @@
 */
 import {SCLicensePlate} from '../general/namespaces';
 import {SCAppConfiguration} from './app';
+import {SCAuthorizationProvider, SCAuthorizationProviderType} from './authorization';
 import {SCBackendConfiguration, SCBackendInternalConfiguration} from './backend';

 /**
 * A configuration file that configures app and backend
+ *
 * @validatable
 */
 export interface SCConfigFile {
-
  /**
   * Configuration for the app that is visible to clients
   */
  app: SCAppConfiguration;

+  /**
+   * Configuration for the supported authorization providers
+   */
+  auth: {[key in SCAuthorizationProviderType]?: SCAuthorizationProvider};
+
  /**
   * Configuration for the backend that is visible to clients
   */
--- a/src/config/user.ts
+++ b/src/config/user.ts
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2021-2022 Open StApps
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation, version 3.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/**
+ * User configuration keys mapped to string type while including their requiredness
+ */
+export type SCUserConfigurationMap = {[K in keyof SCUserConfigurationOptional]?: string} & {
+  [K in keyof SCUserConfigurationRequired]: string;
+};
+
+/**
+ * A user configuration
+ */
+export type SCUserConfiguration = SCUserConfigurationRequired & SCUserConfigurationOptional;
+
+/**
+ * A user configurations required properties
+ */
+interface SCUserConfigurationRequired {
+  /**
+   * ID given to the user
+   */
+  id: string;
+  /**
+   * The complete name of the user combining all the parts of the name into one
+   */
+  name: string;
+}
+
+/**
+ * A user configurations optional properties
+ */
+interface SCUserConfigurationOptional {
+  /**
+   * User's e-mail
+   */
+  email?: string;
+  /**
+   * User's family name
+   */
+  familyName?: string;
+  /**
+   * User's given name
+   */
+  givenName?: string;
+  /**
+   * Role assigned to the user
+   */
+  role?: string;
+  /**
+   * Student ID given to the user
+   */
+  studentId?: string;
+}
--- a/src/general/i18n.ts
+++ b/src/general/i18n.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -37,7 +37,7 @@ export interface SCLanguage {
 * @see https://en.wikipedia.org/wiki/ISO_639-1
 */
 export type SCLanguageName =
-  'afar'
+  | 'afar'
  | 'abkhazian'
  | 'avestan'
  | 'afrikaans'
@@ -229,7 +229,7 @@ export type SCLanguageName =
 * @see https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes
 */
 export type SCLanguageCode =
-  'aa'
+  | 'aa'
  | 'ab'
  | 'ae'
  | 'af'
@@ -421,7 +421,7 @@ export type SCLanguageCode =
 * @see https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2
 */
 export type SCNationality =
-  'Afghanistan'
+  | 'Afghanistan'
  | 'Åland Islands'
  | 'Albania'
  | 'Algeria'
@@ -475,7 +475,7 @@ export type SCNationality =
  | 'Congo (Democratic Republic of the)'
  | 'Cook Islands'
  | 'Costa Rica'
-  | 'Côte d\'Ivoire'
+  | "Côte d'Ivoire"
  | 'Croatia'
  | 'Cuba'
  | 'Curaçao'
@@ -538,11 +538,11 @@ export type SCNationality =
  | 'Kazakhstan'
  | 'Kenya'
  | 'Kiribati'
-  | 'Korea (Democratic People\'s Republic of)'
+  | "Korea (Democratic People's Republic of)"
  | 'Korea (Republic of)'
  | 'Kuwait'
  | 'Kyrgyzstan'
-  | 'Lao People\'s Democratic Republic'
+  | "Lao People's Democratic Republic"
  | 'Latvia'
  | 'Lebanon'
  | 'Lesotho'
@@ -694,10 +694,11 @@ export interface SCTranslations<T> {
 * (Source: https://stackoverflow.com/a/51365037)
 */
 type RecursivePartial<T> = {
-  [P in keyof T]-?:
-  T[P] extends Array<infer U> ? Array<RecursivePartial<U>> :
-    T[P] extends object ? RecursivePartial<T[P]> :
-      T[P];
+  [P in keyof T]-?: T[P] extends Array<infer U>
+    ? Array<RecursivePartial<U>>
+    : T[P] extends object
+    ? RecursivePartial<T[P]>
+    : T[P];
 };

 /**
--- a/src/general/map.ts
+++ b/src/general/map.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -42,5 +42,5 @@ export type SCRestrictedMap<U extends string | number, T> = {
  /**
   * One value for each key
   */
-  [key in U]: T
+  [key in U]: T;
 };
--- a/src/general/namespaces.ts
+++ b/src/general/namespaces.ts
--- a/src/general/time.ts
+++ b/src/general/time.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,19 +12,15 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-/* tslint:disable:max-line-length */
 /**
 * An ISO8601 date
 *
- * @pattern ^([\+-]?\d{4}(?!\d{2}\b))((-?)((0[1-9]|1[0-2])(\3([12]\d|0[1-9]|3[01]))?|W([0-4]\d|5[0-2])(-?[1-7])?|(00[1-9]|0[1-9]\d|[12]\d{2}|3([0-5]\d|6[1-6])))([T\s]((([01]\d|2[0-3])((:?)[0-5]\d)?|24\:?00)([\.,]\d+(?!:))?)?(\17[0-5]\d([\.,]\d+)?)?([zZ]|([\+-])([01]\d|2[0-3]):?([0-5]\d)?)?)?)?$
+ * @pattern ^(-?(?:[1-9][0-9]*)?[0-9]{4})-(1[0-2]|0[1-9])-(3[01]|0[1-9]|[12][0-9])(T(2[0-3]|[01][0-9]):([0-5][0-9]):([0-5][0-9])([\.,][0-9]{0,7})?(Z|[+-](?:2[0-3]|[01][0-9])(:?[0-5][0-9])?)?)?$
 * @see https://gist.github.com/philipashlock/8830168
- *
 * @date
 */
 export type SCISO8601Date = string;
-/* tslint:enable */

-/* tslint:disable:max-line-length */
 /**
 * An ISO8601 duration
 *
@@ -32,11 +28,10 @@ export type SCISO8601Date = string;
 * @see https://gist.github.com/philipashlock/8830168
 */
 export type SCISO8601Duration = string;
-/* tslint:enable */

 /**
 * An ISO8601 time
 *
- * @pattern \d{2}:\d{2}(:\d{2})?
+ * @pattern ^(2[0-3]|[01][0-9]):?([0-5][0-9]):?([0-5][0-9])$
 */
 export type SCISO8601Time = string;
--- a/src/general/uuid.ts
+++ b/src/general/uuid.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/guards.ts
+++ b/src/guards.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -16,7 +16,12 @@ import {SCTranslations} from './general/i18n';
 import {SCBulkResponse} from './protocol/routes/bulk-request';
 import {SCSearchResponse} from './protocol/routes/search';
 import {SCMultiSearchResponse} from './protocol/routes/search-multi';
-import {SCThing, SCThingTranslatableProperties, SCThingType, SCThingWithoutReferences} from './things/abstract/thing';
+import {
+  SCThing,
+  SCThingTranslatableProperties,
+  SCThingType,
+  SCThingWithoutReferences,
+} from './things/abstract/thing';

 /**
 * Type guard to check if something is a SCThing
@@ -32,16 +37,13 @@ export function isThing(something: unknown): something is SCThing {
    return false;
  }

-  // tslint:disable-next-line:completed-docs
-  const type = (something as { type: unknown; }).type;
+  const type = (something as {type: unknown}).type;

  if (typeof type !== 'string') {
    return false;
  }

-  return Object
-    .values(SCThingType)
-    .indexOf(type as SCThingType) >= 0;
+  return Object.values(SCThingType).includes(type as SCThingType);
 }

 /**
@@ -49,9 +51,9 @@ export function isThing(something: unknown): something is SCThing {
 *
 * @param thing Thing to check
 */
-export function isThingWithTranslations(thing: SCThingWithoutReferences)
-// tslint:disable-next-line:completed-docs
-  : thing is SCThingWithoutReferences & { translations: SCTranslations<SCThingTranslatableProperties>; } {
+export function isThingWithTranslations(
+  thing: SCThingWithoutReferences,
+): thing is SCThingWithoutReferences & {translations: SCTranslations<SCThingTranslatableProperties>} {
  return typeof thing.translations !== 'undefined';
 }

@@ -65,29 +67,31 @@ export function isBulkResponse(something: unknown): something is SCBulkResponse
    return false;
  }

-  if (!('expiration' in something)
-    || !('source' in something)
-    || !('state' in something)
-    || !('type' in something)
-    || !('uid' in something)) {
+  if (
+    !('expiration' in something) ||
+    !('source' in something) ||
+    !('state' in something) ||
+    !('type' in something) ||
+    !('uid' in something)
+  ) {
    return false;
  }

  const {expiration, source, state, type, uid} = something as {
-    // tslint:disable:completed-docs
    expiration: unknown;
    source: unknown;
    state: unknown;
    type: unknown;
    uid: unknown;
-    // tslint:enable
  };

-  return typeof expiration === 'string'
-    && typeof source === 'string'
-    && typeof state === 'string'
-    && typeof type === 'string'
-    && typeof uid === 'string';
+  return (
+    typeof expiration === 'string' &&
+    typeof source === 'string' &&
+    typeof state === 'string' &&
+    typeof type === 'string' &&
+    typeof uid === 'string'
+  );
 }

 /**
@@ -99,16 +103,18 @@ export function isSearchResponse(something: unknown): something is SCSearchRespo
  if (!(typeof something === 'object') || something === null) {
    return false;
  }
-  const somethingObject = (something as { [key: string]: { [key: string]: string; }; });
+  const somethingObject = something as {[key: string]: {[key: string]: string}};

-  return Array.isArray(somethingObject.data)
-    && Array.isArray(somethingObject.facets)
-    && typeof somethingObject.pagination !== 'undefined'
-    && typeof somethingObject.pagination.count === 'number'
-    && typeof somethingObject.pagination.offset === 'number'
-    && typeof somethingObject.pagination.total === 'number'
-    && typeof somethingObject.stats !== 'undefined'
-    && typeof somethingObject.stats.time === 'number';
+  return (
+    Array.isArray(somethingObject.data) &&
+    Array.isArray(somethingObject.facets) &&
+    typeof somethingObject.pagination !== 'undefined' &&
+    typeof somethingObject.pagination.count === 'number' &&
+    typeof somethingObject.pagination.offset === 'number' &&
+    typeof somethingObject.pagination.total === 'number' &&
+    typeof somethingObject.stats !== 'undefined' &&
+    typeof somethingObject.stats.time === 'number'
+  );
 }

 /**
@@ -117,10 +123,10 @@ export function isSearchResponse(something: unknown): something is SCSearchRespo
 * @param something Something to check
 */
 export function isMultiSearchResponse(something: unknown): something is SCMultiSearchResponse {
-  const initialValue = Object.keys(something as { [key: string]: string; }).length > 0 ? true : false;
+  const initialValue = Object.keys(something as {[key: string]: string}).length > 0 ? true : false;

-  return Object.keys(something as { [key: string]: string; })
-    .reduce((previousOnesAreSearchResponses, key) => {
-      return previousOnesAreSearchResponses && isSearchResponse((something as { [key: string]: string; })[key]);
-    }, initialValue as boolean);
+  // eslint-disable-next-line unicorn/no-array-reduce
+  return Object.keys(something as {[key: string]: string}).reduce((previousOnesAreSearchResponses, key) => {
+    return previousOnesAreSearchResponses && isSearchResponse((something as {[key: string]: string})[key]);
+  }, initialValue as boolean);
 }
--- a/src/meta.ts
+++ b/src/meta.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -13,14 +13,22 @@
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
 import {SCThingType} from './things/abstract/thing';
-import {SCAcademicEvent, SCAcademicEventMeta, SCAcademicEventWithoutReferences} from './things/academic-event';
+import {
+  SCAcademicEvent,
+  SCAcademicEventMeta,
+  SCAcademicEventWithoutReferences,
+} from './things/academic-event';
 import {SCArticle, SCArticleMeta, SCArticleWithoutReferences} from './things/article';
 import {SCAssessment, SCAssessmentMeta, SCAssessmentWithoutReferences} from './things/assessment';
 import {SCBook, SCBookMeta, SCBookWithoutReferences} from './things/book';
 import {SCBuilding, SCBuildingMeta, SCBuildingWithoutReferences} from './things/building';
 import {SCCatalog, SCCatalogMeta, SCCatalogWithoutReferences} from './things/catalog';
 import {SCContactPoint, SCContactPointMeta, SCContactPointWithoutReferences} from './things/contact-point';
-import {SCCourseOfStudy, SCCourseOfStudyMeta, SCCourseOfStudyWithoutReferences} from './things/course-of-study';
+import {
+  SCCourseOfStudy,
+  SCCourseOfStudyMeta,
+  SCCourseOfStudyWithoutReferences,
+} from './things/course-of-study';
 import {SCDateSeries, SCDateSeriesMeta, SCDateSeriesWithoutReferences} from './things/date-series';
 import {SCDiff, SCDiffMeta, SCDiffWithoutReferences} from './things/diff';
 import {SCDish, SCDishMeta, SCDishWithoutReferences} from './things/dish';
@@ -30,7 +38,11 @@ import {SCMessage, SCMessageMeta, SCMessageWithoutReferences} from './things/mes
 import {SCOrganization, SCOrganizationMeta, SCOrganizationWithoutReferences} from './things/organization';
 import {SCPeriodical, SCPeriodicalMeta, SCPeriodicalWithoutReferences} from './things/periodical';
 import {SCPerson, SCPersonMeta, SCPersonWithoutReferences} from './things/person';
-import {SCPointOfInterest, SCPointOfInterestMeta, SCPointOfInterestWithoutReferences} from './things/point-of-interest';
+import {
+  SCPointOfInterest,
+  SCPointOfInterestMeta,
+  SCPointOfInterestWithoutReferences,
+} from './things/point-of-interest';
 import {
  SCPublicationEvent,
  SCPublicationEventMeta,
@@ -46,12 +58,10 @@ import {SCToDo, SCToDoMeta, SCToDoWithoutReferences} from './things/todo';
 import {SCTour, SCTourMeta, SCTourWithoutReferences} from './things/tour';
 import {SCVideo, SCVideoMeta, SCVideoWithoutReferences} from './things/video';

-/* tslint:disable:variable-name */
 /**
 * A map of things, from type to meta data
 */
-export const SCClasses: { [K in SCThingType]: object } = {
-  /* tslint:enable */
+export const SCClasses: {[K in SCThingType]: object} = {
  'assessment': SCAssessmentMeta,
  'academic event': SCAcademicEventMeta,
  'article': SCArticleMeta,
@@ -83,7 +93,7 @@ export const SCClasses: { [K in SCThingType]: object } = {
 };

 export type SCIndexableThings =
-  SCAssessment
+  | SCAssessment
  | SCAcademicEvent
  | SCArticle
  | SCBook
@@ -112,9 +122,7 @@ export type SCIndexableThings =
 /**
 * An object that exists in the StAppsCore
 */
-export type SCThings =
-  SCIndexableThings
-  | SCDiff | SCFavorite | SCSetting;
+export type SCThings = SCIndexableThings | SCDiff | SCFavorite | SCSetting;

 /**
 * A field of a thing
@@ -124,67 +132,121 @@ export type SCThingsField = keyof SCThings | string;
 /**
 * Thing without references for a thing
 */
-export type SCAssociatedThingWithoutReferences<THING extends SCThings> =
-  THING extends SCAssessment ? SCAssessmentWithoutReferences :
-    THING extends SCAcademicEvent ? SCAcademicEventWithoutReferences :
-      THING extends SCArticle ? SCArticleWithoutReferences :
-        THING extends SCBook ? SCBookWithoutReferences :
-          THING extends SCBuilding ? SCBuildingWithoutReferences :
-            THING extends SCCatalog ? SCCatalogWithoutReferences :
-              THING extends SCContactPoint ? SCContactPointWithoutReferences :
-                THING extends SCCourseOfStudy ? SCCourseOfStudyWithoutReferences :
-                  THING extends SCDateSeries ? SCDateSeriesWithoutReferences :
-                    THING extends SCDiff ? SCDiffWithoutReferences :
-                      THING extends SCDish ? SCDishWithoutReferences :
-                        THING extends SCFavorite ? SCFavoriteWithoutReferences :
-                          THING extends SCFloor ? SCFloorWithoutReferences :
-                            THING extends SCMessage ? SCMessageWithoutReferences :
-                              THING extends SCOrganization ? SCOrganizationWithoutReferences :
-                                THING extends SCPeriodical ? SCPeriodicalWithoutReferences :
-                                  THING extends SCPerson ? SCPersonWithoutReferences :
-                                    THING extends SCPointOfInterest ? SCPointOfInterestWithoutReferences :
-                                      THING extends SCPublicationEvent ? SCPublicationEventWithoutReferences :
-                                        THING extends SCRoom ? SCRoomWithoutReferences :
-                                          THING extends SCSemester ? SCSemesterWithoutReferences :
-                                            THING extends SCSetting ? SCSettingWithoutReferences :
-                                              THING extends SCSportCourse ? SCSportCourseWithoutReferences :
-                                                THING extends SCStudyModule ? SCStudyModuleWithoutReferences :
-                                                  THING extends SCTicket ? SCTicketWithoutReferences :
-                                                    THING extends SCToDo ? SCToDoWithoutReferences :
-                                                      THING extends SCTour ? SCTourWithoutReferences :
-                                                        THING extends SCVideo ? SCVideoWithoutReferences :
-                                                          never;
+export type SCAssociatedThingWithoutReferences<THING extends SCThings> = THING extends SCAssessment
+  ? SCAssessmentWithoutReferences
+  : THING extends SCAcademicEvent
+  ? SCAcademicEventWithoutReferences
+  : THING extends SCArticle
+  ? SCArticleWithoutReferences
+  : THING extends SCBook
+  ? SCBookWithoutReferences
+  : THING extends SCBuilding
+  ? SCBuildingWithoutReferences
+  : THING extends SCCatalog
+  ? SCCatalogWithoutReferences
+  : THING extends SCContactPoint
+  ? SCContactPointWithoutReferences
+  : THING extends SCCourseOfStudy
+  ? SCCourseOfStudyWithoutReferences
+  : THING extends SCDateSeries
+  ? SCDateSeriesWithoutReferences
+  : THING extends SCDiff
+  ? SCDiffWithoutReferences
+  : THING extends SCDish
+  ? SCDishWithoutReferences
+  : THING extends SCFavorite
+  ? SCFavoriteWithoutReferences
+  : THING extends SCFloor
+  ? SCFloorWithoutReferences
+  : THING extends SCMessage
+  ? SCMessageWithoutReferences
+  : THING extends SCOrganization
+  ? SCOrganizationWithoutReferences
+  : THING extends SCPeriodical
+  ? SCPeriodicalWithoutReferences
+  : THING extends SCPerson
+  ? SCPersonWithoutReferences
+  : THING extends SCPointOfInterest
+  ? SCPointOfInterestWithoutReferences
+  : THING extends SCPublicationEvent
+  ? SCPublicationEventWithoutReferences
+  : THING extends SCRoom
+  ? SCRoomWithoutReferences
+  : THING extends SCSemester
+  ? SCSemesterWithoutReferences
+  : THING extends SCSetting
+  ? SCSettingWithoutReferences
+  : THING extends SCSportCourse
+  ? SCSportCourseWithoutReferences
+  : THING extends SCStudyModule
+  ? SCStudyModuleWithoutReferences
+  : THING extends SCTicket
+  ? SCTicketWithoutReferences
+  : THING extends SCToDo
+  ? SCToDoWithoutReferences
+  : THING extends SCTour
+  ? SCTourWithoutReferences
+  : THING extends SCVideo
+  ? SCVideoWithoutReferences
+  : never;

 /**
 * Thing for a thing without references
 */
-export type SCAssociatedThing<THING extends SCThings> =
-  THING extends SCAssessmentWithoutReferences ? SCAssessment :
-    THING extends SCAcademicEventWithoutReferences ? SCAcademicEvent :
-      THING extends SCArticleWithoutReferences ? SCArticle :
-        THING extends SCBookWithoutReferences ? SCBook :
-          THING extends SCBuildingWithoutReferences ? SCBuilding :
-            THING extends SCCatalogWithoutReferences ? SCCatalog :
-              THING extends SCContactPointWithoutReferences ? SCContactPoint :
-                THING extends SCCourseOfStudyWithoutReferences ? SCCourseOfStudy :
-                  THING extends SCDateSeriesWithoutReferences ? SCDateSeries :
-                    THING extends SCDiffWithoutReferences ? SCDiff :
-                      THING extends SCDishWithoutReferences ? SCDish :
-                        THING extends SCFavoriteWithoutReferences ? SCFavorite :
-                          THING extends SCFloorWithoutReferences ? SCFloor :
-                            THING extends SCMessageWithoutReferences ? SCMessage :
-                              THING extends SCOrganizationWithoutReferences ? SCOrganization :
-                                THING extends SCPeriodicalWithoutReferences ? SCPeriodical :
-                                  THING extends SCPersonWithoutReferences ? SCPerson :
-                                    THING extends SCPointOfInterestWithoutReferences ? SCPointOfInterest :
-                                      THING extends SCPublicationEventWithoutReferences ? SCPublicationEvent :
-                                        THING extends SCRoomWithoutReferences ? SCRoom :
-                                          THING extends SCSemesterWithoutReferences ? SCSemester :
-                                            THING extends SCSettingWithoutReferences ? SCSetting :
-                                              THING extends SCSportCourseWithoutReferences ? SCSportCourse :
-                                                THING extends SCStudyModuleWithoutReferences ? SCStudyModule :
-                                                  THING extends SCTicketWithoutReferences ? SCTicket :
-                                                    THING extends SCToDoWithoutReferences ? SCToDo :
-                                                      THING extends SCTourWithoutReferences ? SCTour :
-                                                        THING extends SCVideoWithoutReferences ? SCVideo :
-                                                          never;
+export type SCAssociatedThing<THING extends SCThings> = THING extends SCAssessmentWithoutReferences
+  ? SCAssessment
+  : THING extends SCAcademicEventWithoutReferences
+  ? SCAcademicEvent
+  : THING extends SCArticleWithoutReferences
+  ? SCArticle
+  : THING extends SCBookWithoutReferences
+  ? SCBook
+  : THING extends SCBuildingWithoutReferences
+  ? SCBuilding
+  : THING extends SCCatalogWithoutReferences
+  ? SCCatalog
+  : THING extends SCContactPointWithoutReferences
+  ? SCContactPoint
+  : THING extends SCCourseOfStudyWithoutReferences
+  ? SCCourseOfStudy
+  : THING extends SCDateSeriesWithoutReferences
+  ? SCDateSeries
+  : THING extends SCDiffWithoutReferences
+  ? SCDiff
+  : THING extends SCDishWithoutReferences
+  ? SCDish
+  : THING extends SCFavoriteWithoutReferences
+  ? SCFavorite
+  : THING extends SCFloorWithoutReferences
+  ? SCFloor
+  : THING extends SCMessageWithoutReferences
+  ? SCMessage
+  : THING extends SCOrganizationWithoutReferences
+  ? SCOrganization
+  : THING extends SCPeriodicalWithoutReferences
+  ? SCPeriodical
+  : THING extends SCPersonWithoutReferences
+  ? SCPerson
+  : THING extends SCPointOfInterestWithoutReferences
+  ? SCPointOfInterest
+  : THING extends SCPublicationEventWithoutReferences
+  ? SCPublicationEvent
+  : THING extends SCRoomWithoutReferences
+  ? SCRoom
+  : THING extends SCSemesterWithoutReferences
+  ? SCSemester
+  : THING extends SCSettingWithoutReferences
+  ? SCSetting
+  : THING extends SCSportCourseWithoutReferences
+  ? SCSportCourse
+  : THING extends SCStudyModuleWithoutReferences
+  ? SCStudyModule
+  : THING extends SCTicketWithoutReferences
+  ? SCTicket
+  : THING extends SCToDoWithoutReferences
+  ? SCToDo
+  : THING extends SCTourWithoutReferences
+  ? SCTour
+  : THING extends SCVideoWithoutReferences
+  ? SCVideo
+  : never;
--- a/src/protocol/error.ts
+++ b/src/protocol/error.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -50,7 +50,8 @@ export abstract class SCError implements SCErrorResponse {
  constructor(public name: string, public message: string, public statusCode: number, stack = false) {
    // generate stacktrace if needed
    if (stack) {
-      this.stack = (new Error()).stack;
+      // eslint-disable-next-line unicorn/error-message
+      this.stack = new Error().stack;
    }
  }
 }
--- a/src/protocol/errors/internal-server-error.ts
+++ b/src/protocol/errors/internal-server-error.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -29,15 +29,15 @@ export class SCInternalServerErrorResponse extends SCError {
  /**
   * Create a SCInternalServerErrorResponse
   *
-   * @param err Internal server error
+   * @param error Internal server error
   * @param stack Set to true if a stack trace should be created
   * and the internal server error should be displayed to the client
   */
-  constructor(err?: Error, stack = false) {
+  constructor(error?: Error, stack = false) {
    super('InternalServerError', 'Internal server error', StatusCodes.BAD_GATEWAY, stack);

    if (stack) {
-      this.additionalData = err;
+      this.additionalData = error;
    }
  }
 }
--- a/src/protocol/errors/method-not-allowed.ts
+++ b/src/protocol/errors/method-not-allowed.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -27,6 +27,11 @@ export class SCMethodNotAllowedErrorResponse extends SCError {
   * @param stack Set to true if a stack trace should be created
   */
  constructor(stack?: boolean) {
-    super('MethodNotAllowedError', 'HTTP method is not allowed on this route', StatusCodes.METHOD_NOT_ALLOWED, stack);
+    super(
+      'MethodNotAllowedError',
+      'HTTP method is not allowed on this route',
+      StatusCodes.METHOD_NOT_ALLOWED,
+      stack,
+    );
  }
 }
--- a/src/protocol/errors/not-found.ts
+++ b/src/protocol/errors/not-found.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/parameters-not-acceptable.ts
+++ b/src/protocol/errors/parameters-not-acceptable.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/plugin-already-registered.ts
+++ b/src/protocol/errors/plugin-already-registered.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/plugin-registering-failed.ts
+++ b/src/protocol/errors/plugin-registering-failed.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/request-body-too-large.ts
+++ b/src/protocol/errors/request-body-too-large.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/syntax-error.ts
+++ b/src/protocol/errors/syntax-error.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/too-many-requests.ts
+++ b/src/protocol/errors/too-many-requests.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/unsupported-media-type.ts
+++ b/src/protocol/errors/unsupported-media-type.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/errors/validation.ts
+++ b/src/protocol/errors/validation.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/route.ts
+++ b/src/protocol/route.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -40,8 +40,8 @@ export enum SCRouteHttpVerbs {
 /**
 * The constructor of an error response
 */
-// tslint:disable-next-line:no-any
-export type SCErrorResponseConstructor = new (...args: any[]) => SCErrorResponse;
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export type SCErrorResponseConstructor = new (...arguments_: any[]) => SCErrorResponse;

 /**
 * A description of a route
@@ -78,9 +78,9 @@ export interface SCRoute {
  statusCodeSuccess: number;

  /**
-   * URL fragment of the route
+   * URL path of the route
   */
-  urlFragment: string;
+  urlPath: string;
 }

 /**
@@ -91,37 +91,43 @@ export abstract class SCAbstractRoute implements SCRoute {
   * @see SCRoute.errorNames
   */
  errorNames: SCErrorResponseConstructor[] = [];
+
  /**
   * @see SCRoute.method
   */
  method: SCRouteHttpVerbs = SCRouteHttpVerbs.GET;
+
  /**
   * @see SCRoute.obligatoryParameters
   */
  obligatoryParameters?: SCMap<string>;
+
  /**
   * @see SCRoute.requestBodyName
   */
  requestBodyName = 'any';
+
  /**
   * @see SCRoute.responseBodyName
   */
  responseBodyName = 'any';
+
  /**
   * @see SCRoute.statusCodeSuccess
   */
  statusCodeSuccess = 200;
-  /**
-   * @see SCRoute.urlFragment
-   */
-  urlFragment = '/';

  /**
-   * Get "compiled" URL fragment
-   *
-   * @param parameters Parameters to compile URL fragment with
+   * @see SCRoute.urlPath
   */
-  public getUrlFragment(parameters: SCMap<string> = {}): string {
+  urlPath = '/';
+
+  /**
+   * Get "compiled" URL path
+   *
+   * @param parameters Parameters to compile URL path with
+   */
+  public getUrlPath(parameters: SCMap<string> = {}): string {
    let obligatoryParameters: string[] = [];

    if (typeof this.obligatoryParameters === 'object') {
@@ -132,17 +138,17 @@ export abstract class SCAbstractRoute implements SCRoute {
      throw new Error('Extraneous parameters provided.');
    }

-    return this.urlFragment
+    return this.urlPath
      .split('/')
-      .map((part) => {
+      .map(part => {
        if (part.indexOf(':') !== 0) {
          return part;
        }

-        const parameter = part.substr(1);
+        const parameter = part.slice(1);

        if (typeof parameters[parameter] === 'undefined') {
-          throw new Error(`Parameter '${parameter}' not provided.`);
+          throw new TypeError(`Parameter '${parameter}' not provided.`);
        }

        return parameters[parameter];
@@ -155,7 +161,7 @@ export abstract class SCAbstractRoute implements SCRoute {
 * Possible requests
 */
 export type SCRequests =
-  SCBookAvailabilityRequest
+  | SCBookAvailabilityRequest
  | SCBulkRequest
  | SCBulkAddRequest
  | SCBulkDoneRequest
@@ -169,7 +175,7 @@ export type SCRequests =
 * Possible responses
 */
 export type SCResponses =
-  SCBookAvailabilityResponse
+  | SCBookAvailabilityResponse
  | SCBulkResponse
  | SCBulkAddResponse
  | SCBulkDoneResponse
@@ -182,59 +188,91 @@ export type SCResponses =
 /**
 * Associated response for a request
 */
-export type SCAssociatedResponse<REQUEST> =
-  REQUEST extends SCBookAvailabilityRequest ? SCBookAvailabilityResponse :
-    REQUEST extends SCBulkRequest ? SCBulkResponse :
-      REQUEST extends SCBulkAddRequest ? SCBulkAddResponse :
-        REQUEST extends SCBulkDoneRequest ? SCBulkDoneResponse :
-          REQUEST extends SCFeedbackRequest ? SCFeedbackResponse :
-            REQUEST extends SCIndexRequest ? SCIndexResponse :
-              REQUEST extends SCMultiSearchRequest ? SCMultiSearchResponse :
-                REQUEST extends SCSearchRequest ? SCSearchResponse :
-                  REQUEST extends SCThingUpdateRequest ? SCThingUpdateResponse :
-                    never;
+export type SCAssociatedResponse<REQUEST> = REQUEST extends SCBookAvailabilityRequest
+  ? SCBookAvailabilityResponse
+  : REQUEST extends SCBulkRequest
+  ? SCBulkResponse
+  : REQUEST extends SCBulkAddRequest
+  ? SCBulkAddResponse
+  : REQUEST extends SCBulkDoneRequest
+  ? SCBulkDoneResponse
+  : REQUEST extends SCFeedbackRequest
+  ? SCFeedbackResponse
+  : REQUEST extends SCIndexRequest
+  ? SCIndexResponse
+  : REQUEST extends SCMultiSearchRequest
+  ? SCMultiSearchResponse
+  : REQUEST extends SCSearchRequest
+  ? SCSearchResponse
+  : REQUEST extends SCThingUpdateRequest
+  ? SCThingUpdateResponse
+  : never;

 /**
 * Associated request for a response
 */
-export type SCAssociatedRequest<RESPONSE> =
-  RESPONSE extends SCBookAvailabilityResponse ? SCBookAvailabilityRequest :
-    RESPONSE extends SCBulkResponse ? SCBulkRequest :
-      RESPONSE extends SCBulkAddResponse ? SCBulkAddRequest :
-        RESPONSE extends SCBulkDoneResponse ? SCBulkDoneRequest :
-          RESPONSE extends SCFeedbackResponse ? SCFeedbackRequest :
-            RESPONSE extends SCIndexResponse ? SCIndexRequest :
-              RESPONSE extends SCMultiSearchResponse ? SCMultiSearchRequest :
-                RESPONSE extends SCSearchResponse ? SCSearchRequest :
-                  RESPONSE extends SCThingUpdateResponse ? SCThingUpdateRequest :
-                    never;
+export type SCAssociatedRequest<RESPONSE> = RESPONSE extends SCBookAvailabilityResponse
+  ? SCBookAvailabilityRequest
+  : RESPONSE extends SCBulkResponse
+  ? SCBulkRequest
+  : RESPONSE extends SCBulkAddResponse
+  ? SCBulkAddRequest
+  : RESPONSE extends SCBulkDoneResponse
+  ? SCBulkDoneRequest
+  : RESPONSE extends SCFeedbackResponse
+  ? SCFeedbackRequest
+  : RESPONSE extends SCIndexResponse
+  ? SCIndexRequest
+  : RESPONSE extends SCMultiSearchResponse
+  ? SCMultiSearchRequest
+  : RESPONSE extends SCSearchResponse
+  ? SCSearchRequest
+  : RESPONSE extends SCThingUpdateResponse
+  ? SCThingUpdateRequest
+  : never;

 /**
 * Associated request for a route
 */
-export type SCAssignedRequest<ROUTE extends SCAbstractRoute> =
-  ROUTE extends SCBookAvailabilityRoute ? SCBookAvailabilityRequest :
-    ROUTE extends SCBulkRoute ? SCBulkRequest :
-      ROUTE extends SCBulkAddRoute ? SCBulkAddRequest :
-        ROUTE extends SCBulkDoneRoute ? SCBulkDoneRequest :
-          ROUTE extends SCFeedbackRoute ? SCFeedbackRequest :
-            ROUTE extends SCIndexRoute ? SCIndexRequest :
-              ROUTE extends SCMultiSearchRoute ? SCMultiSearchRequest :
-                ROUTE extends SCSearchRoute ? SCSearchRequest :
-                  ROUTE extends SCThingUpdateRoute ? SCThingUpdateRequest :
-                    never;
+export type SCAssignedRequest<ROUTE extends SCAbstractRoute> = ROUTE extends SCBookAvailabilityRoute
+  ? SCBookAvailabilityRequest
+  : ROUTE extends SCBulkRoute
+  ? SCBulkRequest
+  : ROUTE extends SCBulkAddRoute
+  ? SCBulkAddRequest
+  : ROUTE extends SCBulkDoneRoute
+  ? SCBulkDoneRequest
+  : ROUTE extends SCFeedbackRoute
+  ? SCFeedbackRequest
+  : ROUTE extends SCIndexRoute
+  ? SCIndexRequest
+  : ROUTE extends SCMultiSearchRoute
+  ? SCMultiSearchRequest
+  : ROUTE extends SCSearchRoute
+  ? SCSearchRequest
+  : ROUTE extends SCThingUpdateRoute
+  ? SCThingUpdateRequest
+  : never;

 /**
 * Associated response for a route
 */
-export type SCAssignedResponse<ROUTE extends SCAbstractRoute> =
-  ROUTE extends SCBookAvailabilityRoute ? SCBookAvailabilityResponse :
-    ROUTE extends SCBulkRoute ? SCBulkResponse :
-      ROUTE extends SCBulkAddRoute ? SCBulkAddResponse :
-        ROUTE extends SCBulkDoneRoute ? SCBulkDoneResponse :
-          ROUTE extends SCFeedbackRoute ? SCFeedbackResponse :
-            ROUTE extends SCIndexRoute ? SCIndexResponse :
-              ROUTE extends SCMultiSearchRoute ? SCMultiSearchResponse :
-                ROUTE extends SCSearchRoute ? SCSearchResponse :
-                  ROUTE extends SCThingUpdateRoute ? SCThingUpdateResponse :
-                    never;
+export type SCAssignedResponse<ROUTE extends SCAbstractRoute> = ROUTE extends SCBookAvailabilityRoute
+  ? SCBookAvailabilityResponse
+  : ROUTE extends SCBulkRoute
+  ? SCBulkResponse
+  : ROUTE extends SCBulkAddRoute
+  ? SCBulkAddResponse
+  : ROUTE extends SCBulkDoneRoute
+  ? SCBulkDoneResponse
+  : ROUTE extends SCFeedbackRoute
+  ? SCFeedbackResponse
+  : ROUTE extends SCIndexRoute
+  ? SCIndexResponse
+  : ROUTE extends SCMultiSearchRoute
+  ? SCMultiSearchResponse
+  : ROUTE extends SCSearchRoute
+  ? SCSearchResponse
+  : ROUTE extends SCThingUpdateRoute
+  ? SCThingUpdateResponse
+  : never;
--- a/src/protocol/routes/book-availability.ts
+++ b/src/protocol/routes/book-availability.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -14,7 +14,10 @@
 */
 import {StatusCodes} from 'http-status-codes';
 import {SCUuid} from '../../general/uuid';
-import {SCAcademicPriceGroup, SCThingThatCanBeOfferedOffer} from '../../things/abstract/thing-that-can-be-offered';
+import {
+  SCAcademicPriceGroup,
+  SCThingThatCanBeOfferedOffer,
+} from '../../things/abstract/thing-that-can-be-offered';
 import {SCInternalServerErrorResponse} from '../errors/internal-server-error';
 import {SCMethodNotAllowedErrorResponse} from '../errors/method-not-allowed';
 import {SCNotFoundErrorResponse} from '../errors/not-found';
@@ -89,6 +92,6 @@ export class SCBookAvailabilityRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCBookAvailabilityRequest';
    this.responseBodyName = 'SCBookAvailabilityResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/bookAvailability';
+    this.urlPath = '/bookAvailability';
  }
 }
--- a/src/protocol/routes/bulk-add.ts
+++ b/src/protocol/routes/bulk-add.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -35,8 +35,7 @@ export type SCBulkAddRequest = SCThings;
 *
 * @validatable
 */
-export interface SCBulkAddResponse {
-}
+export interface SCBulkAddResponse {}

 /**
 * Route for indexing SC things in a bulk
@@ -60,6 +59,6 @@ export class SCBulkAddRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCBulkAddRequest';
    this.responseBodyName = 'SCBulkAddResponse';
    this.statusCodeSuccess = StatusCodes.CREATED;
-    this.urlFragment = '/bulk/:UID';
+    this.urlPath = '/bulk/:UID';
  }
 }
--- a/src/protocol/routes/bulk-done.ts
+++ b/src/protocol/routes/bulk-done.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -27,16 +27,14 @@ import {SCAbstractRoute, SCRouteHttpVerbs} from '../route';
 *
 * @validatable
 */
-export interface SCBulkDoneRequest {
-}
+export interface SCBulkDoneRequest {}

 /**
 * Response to a request to change the state of a bulk to done
 *
 * @validatable
 */
-export interface SCBulkDoneResponse {
-}
+export interface SCBulkDoneResponse {}

 /**
 * Route for closing bulks
@@ -60,6 +58,6 @@ export class SCBulkDoneRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCBulkDoneRequest';
    this.responseBodyName = 'SCBulkDoneResponse';
    this.statusCodeSuccess = StatusCodes.NO_CONTENT;
-    this.urlFragment = '/bulk/:UID/done';
+    this.urlPath = '/bulk/:UID/done';
  }
 }
--- a/src/protocol/routes/bulk-request.ts
+++ b/src/protocol/routes/bulk-request.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -31,8 +31,7 @@ import {SCAbstractRoute, SCRouteHttpVerbs} from '../route';
 *
 * @validatable
 */
-export interface SCBulkRequest extends SCBulkParameters {
-}
+export type SCBulkRequest = SCBulkParameters;

 /**
 * Parameters for a bulk
@@ -99,6 +98,6 @@ export class SCBulkRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCBulkRequest';
    this.responseBodyName = 'SCBulkResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/bulk';
+    this.urlPath = '/bulk';
  }
 }
--- a/src/protocol/routes/feedback.ts
+++ b/src/protocol/routes/feedback.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -39,8 +39,7 @@ export interface SCFeedbackRequest extends SCMessage {
 *
 * @validatable
 */
-export interface SCFeedbackResponse {
-}
+export interface SCFeedbackResponse {}

 /**
 * Route for feedback submission
@@ -60,7 +59,7 @@ export class SCFeedbackRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCFeedbackRequest';
    this.responseBodyName = 'SCFeedbackResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/feedback';
+    this.urlPath = '/feedback';
  }
 }

--- a/src/protocol/routes/index.ts
+++ b/src/protocol/routes/index.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -14,6 +14,7 @@
 */
 import {StatusCodes} from 'http-status-codes';
 import {SCAppConfiguration} from '../../config/app';
+import {SCAuthorizationProvider, SCAuthorizationProviderType} from '../../config/authorization';
 import {SCBackendConfiguration} from '../../config/backend';
 import {SCInternalServerErrorResponse} from '../errors/internal-server-error';
 import {SCMethodNotAllowedErrorResponse} from '../errors/method-not-allowed';
@@ -28,8 +29,7 @@ import {SCAbstractRoute, SCRouteHttpVerbs} from '../route';
 *
 * @validatable
 */
-export interface SCIndexRequest {
-}
+export interface SCIndexRequest {}

 /**
 * A response to an index request
@@ -42,6 +42,11 @@ export interface SCIndexResponse {
   */
  app: SCAppConfiguration;

+  /**
+   * @see SCAuthorizationProvider
+   */
+  auth: {[key in SCAuthorizationProviderType]?: SCAuthorizationProvider};
+
  /**
   * @see SCBackendConfiguration
   */
@@ -66,6 +71,6 @@ export class SCIndexRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCIndexRequest';
    this.responseBodyName = 'SCIndexResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/';
+    this.urlPath = '/';
  }
 }
--- a/src/protocol/routes/plugin-register.ts
+++ b/src/protocol/routes/plugin-register.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -123,6 +123,6 @@ export class SCPluginRegisterRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCPluginRegisterRequest';
    this.responseBodyName = 'SCPluginRegisterResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/plugin/register';
+    this.urlPath = '/plugin/register';
  }
 }
--- a/src/protocol/routes/search-multi.ts
+++ b/src/protocol/routes/search-multi.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -64,6 +64,6 @@ export class SCMultiSearchRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCMultiSearchRequest';
    this.responseBodyName = 'SCMultiSearchResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/search/multi';
+    this.urlPath = '/search/multi';
  }
 }
--- a/src/protocol/routes/search.ts
+++ b/src/protocol/routes/search.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -28,16 +28,14 @@ import {SCSearchResult} from '../search/result';
 *
 * @validatable
 */
-export interface SCSearchRequest extends SCSearchQuery {
-}
+export type SCSearchRequest = SCSearchQuery;

 /**
 * A search response
 *
 * @validatable
 */
-export interface SCSearchResponse extends SCSearchResult {
-}
+export type SCSearchResponse = SCSearchResult;

 /**
 * Route for searching things
@@ -57,6 +55,6 @@ export class SCSearchRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCSearchRequest';
    this.responseBodyName = 'SCSearchResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/search';
+    this.urlPath = '/search';
  }
 }
--- a/src/protocol/routes/thing-update.ts
+++ b/src/protocol/routes/thing-update.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -35,8 +35,7 @@ export type SCThingUpdateRequest = SCThings;
 *
 * @validatable
 */
-export interface SCThingUpdateResponse {
-}
+export interface SCThingUpdateResponse {}

 /**
 * Route for updating existing things
@@ -61,6 +60,6 @@ export class SCThingUpdateRoute extends SCAbstractRoute {
    this.requestBodyName = 'SCThingUpdateRequest';
    this.responseBodyName = 'SCThingUpdateResponse';
    this.statusCodeSuccess = StatusCodes.OK;
-    this.urlFragment = '/:TYPE/:UID';
+    this.urlPath = '/:TYPE/:UID';
  }
 }
--- a/src/protocol/search/filter.ts
+++ b/src/protocol/search/filter.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -27,7 +27,7 @@ import {SCSearchValueFilter} from './filters/value';
 * Filter instruction types
 */
 export type SCSearchFilterType =
-  'availability'
+  | 'availability'
  | 'boolean'
  | 'distance'
  | 'value'
@@ -59,7 +59,7 @@ export type SCSearchAbstractFilterArguments = SCMap<unknown>;
 * Available filter instructions
 */
 export type SCSearchFilter =
-  SCSearchAvailabilityFilter
+  | SCSearchAvailabilityFilter
  | SCSearchBooleanFilter
  | SCSearchDistanceFilter
  | SCSearchValueFilter
--- a/src/protocol/search/filters/distance.ts
+++ b/src/protocol/search/filters/distance.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,7 +12,6 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-// tslint:disable-next-line:no-implicit-dependencies
 import {Position} from 'geojson';
 import {SCThingsField} from '../../../meta';
 import {SCSearchAbstractFilter, SCSearchAbstractFilterArguments} from '../filter';
--- a/src/protocol/search/filters/geo.ts
+++ b/src/protocol/search/filters/geo.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,8 +12,7 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-// tslint:disable-next-line:no-implicit-dependencies
-import {Polygon} from 'geojson';
+import {Polygon, Position} from 'geojson';
 import {SCThingsField} from '../../../meta';
 import {SCSearchAbstractFilter, SCSearchAbstractFilterArguments} from '../filter';

@@ -29,6 +28,24 @@ export interface SCGeoFilter extends SCSearchAbstractFilter<SCGeoFilterArguments
  type: 'geo';
 }

+/**
+ * A rectangular geo shape, representing the top-left and bottom-right corners
+ *
+ * This is an extension of the Geojson type
+ * http://geojson.org/geojson-spec.html
+ */
+export interface Envelope {
+  /**
+   * The top-left and bottom-right corners of the bounding box
+   */
+  coordinates: [Position, Position];
+
+  /**
+   * The type of the geometry
+   */
+  type: 'envelope';
+}
+
 /**
 * Arguments for filter instruction by geo data
 */
@@ -41,7 +58,7 @@ export interface SCGeoFilterArguments extends SCSearchAbstractFilterArguments {
  /**
   * Geo data to check up on
   */
-  shape: Polygon;
+  shape: Polygon | Envelope;

  /**
   * Spatial relation between the provided shape and the shape of the field.
--- a/src/protocol/search/filters/range.ts
+++ b/src/protocol/search/filters/range.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020-2021 StApps
+ * Copyright (C) 2020-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -47,6 +47,7 @@ export interface SCSearchNumericRangeFilter extends SCSearchAbstractFilter<SCNum
 * Additional arguments for date range filters
 *
 * Filter uses a plain string to allow for date math expressions
+ *
 * @see https://www.elastic.co/guide/en/elasticsearch/client/net-api/current/date-math-expressions.html
 */
 export interface SCDateRangeFilterArguments extends SCRangeFilterArguments<string> {
--- a/src/protocol/search/sort.ts
+++ b/src/protocol/search/sort.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019, 2020 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
--- a/src/protocol/search/sorts/distance.ts
+++ b/src/protocol/search/sorts/distance.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,7 +12,6 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-// tslint:disable-next-line:no-implicit-dependencies
 import {Position} from 'geojson';
 import {SCSearchAbstractSort, SCSearchAbstractSortArguments} from '../sort';

--- a/src/things/abstract/academic-degree.ts
+++ b/src/things/abstract/academic-degree.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -18,8 +18,7 @@ import {SCThing, SCThingMeta, SCThingWithoutReferences} from './thing';
 /**
 * An academic degree without references
 */
-export interface SCAcademicDegreeWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCAcademicDegreeWithoutReferences extends SCThingWithoutReferences {
  /**
   * The achievable academic degree
   *
@@ -46,28 +45,26 @@ export interface SCAcademicDegreeWithoutReferences
 /**
 * An academic degree
 */
-export interface SCAcademicDegree
-  extends SCAcademicDegreeWithoutReferences, SCThing {
+export interface SCAcademicDegree extends SCAcademicDegreeWithoutReferences, SCThing {
  // noop
 }

 /**
 * Meta information about academic degrees
 */
-export class SCAcademicDegreeMeta
-  extends SCThingMeta implements SCMetaTranslations<SCAcademicDegree> {
+export class SCAcademicDegreeMeta extends SCThingMeta implements SCMetaTranslations<SCAcademicDegree> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      academicDegree: 'Abschlussgrad',
      academicDegreewithField: 'Abschlussbezeichnung',
      academicDegreewithFieldShort: 'Abschlussbezeichnung (kurz)',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      academicDegree: 'academic degree',
      academicDegreewithField: 'acedemic degree and discipline',
      academicDegreewithFieldShort: 'acedemic degree and discipline (short)',
@@ -79,10 +76,10 @@ export class SCAcademicDegreeMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
--- a/src/things/abstract/academic-term.ts
+++ b/src/things/abstract/academic-term.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -19,8 +19,7 @@ import {SCThing, SCThingMeta, SCThingWithoutReferences} from './thing';
 /**
 * An academic term without references
 */
-export interface SCAcademicTermWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCAcademicTermWithoutReferences extends SCThingWithoutReferences {
  /**
   * Short name of the academic term, using the given pattern
   *
@@ -62,22 +61,20 @@ export interface SCAcademicTermWithoutReferences
 /**
 * An academic term
 */
-export interface SCAcademicTerm
-  extends SCAcademicTermWithoutReferences, SCThing {
+export interface SCAcademicTerm extends SCAcademicTermWithoutReferences, SCThing {
  // noop
 }

 /**
 * Meta information about academic terms
 */
-export class SCAcademicTermWithoutReferencesMeta
-  extends SCThingMeta implements SCMetaTranslations<SCThing> {
+export class SCAcademicTermWithoutReferencesMeta extends SCThingMeta implements SCMetaTranslations<SCThing> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      acronym: 'Akronym',
      endDate: 'Enddatum',
      eventsEndDate: 'Enddatum der Veranstaltungen',
@@ -85,7 +82,7 @@ export class SCAcademicTermWithoutReferencesMeta
      startDate: 'Startdatum',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      acronym: 'acronym',
      endDate: 'end date',
      eventsEndDate: 'end date of events',
@@ -99,10 +96,10 @@ export class SCAcademicTermWithoutReferencesMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
--- a/src/things/abstract/creative-work.ts
+++ b/src/things/abstract/creative-work.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -17,20 +17,12 @@ import {SCISO8601Date} from '../../general/time';
 import {SCOrganizationWithoutReferences} from '../organization';
 import {SCPersonWithoutReferences} from '../person';
 import {SCPublicationEventWithoutReferences} from '../publication-event';
-import {SCThingMeta, SCThingTranslatableProperties, SCThingWithoutReferences} from './thing';
-import {
-  SCAcademicPriceGroup,
-  SCThingThatCanBeOffered, SCThingThatCanBeOfferedMeta,
-  SCThingThatCanBeOfferedTranslatableProperties,
-  SCThingThatCanBeOfferedWithoutReferences,
-} from './thing-that-can-be-offered';
+import {SCThing, SCThingMeta, SCThingTranslatableProperties, SCThingWithoutReferences} from './thing';

 /**
 * A creative work without references
 */
-export interface SCCreativeWorkWithoutReferences
-  extends SCThingWithoutReferences, SCThingThatCanBeOfferedWithoutReferences {
-
+export interface SCCreativeWorkWithoutReferences extends SCThingWithoutReferences {
  /**
   * Languages this creative work is available in
   */
@@ -71,6 +63,13 @@ export interface SCCreativeWorkWithoutReferences
   */
  keywords?: string[];

+  /**
+   * Date (in text form) the creative work was most recently
+   *
+   * @keyword
+   */
+  lastPublished?: string;
+
  /**
   * Translated fields of the creative work
   */
@@ -80,8 +79,7 @@ export interface SCCreativeWorkWithoutReferences
 /**
 * A creative work
 */
-export interface SCCreativeWork
-  extends SCCreativeWorkWithoutReferences, SCThingThatCanBeOffered<SCAcademicPriceGroup> {
+export interface SCCreativeWork extends SCCreativeWorkWithoutReferences, SCThing {
  /**
   * Authors of the creative work
   */
@@ -116,8 +114,7 @@ export interface SCCreativeWork
 /**
 * Translatable properties of creative works
 */
-export interface SCCreativeWorkTranslatableProperties
-  extends SCThingTranslatableProperties, SCThingThatCanBeOfferedTranslatableProperties {
+export interface SCCreativeWorkTranslatableProperties extends SCThingTranslatableProperties {
  /**
   * Translation of the keywords of the creative work
   *
@@ -129,15 +126,13 @@ export interface SCCreativeWorkTranslatableProperties
 /**
 * Meta information about creative works
 */
-export class SCCreativeWorkMeta
-  extends SCThingMeta implements SCMetaTranslations<SCCreativeWork> {
+export class SCCreativeWorkMeta extends SCThingMeta implements SCMetaTranslations<SCCreativeWork> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      name: 'Titel',
      authors: 'beteiligte Personen',
      availableLanguages: 'verfügbare Übersetzungen',
@@ -153,8 +148,7 @@ export class SCCreativeWorkMeta
      sourceOrganization: 'Körperschaft',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      name: 'title',
      authors: 'involved persons',
      availableLanguages: 'available languages',
@@ -176,12 +170,10 @@ export class SCCreativeWorkMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
--- a/src/things/abstract/event.ts
+++ b/src/things/abstract/event.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -22,8 +22,7 @@ import {SCThing, SCThingMeta, SCThingWithoutReferences} from './thing';
 /**
 * An event without references
 */
-export interface SCEventWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCEventWithoutReferences extends SCThingWithoutReferences {
  /**
   * Maximum number of participants of the event
   *
@@ -46,8 +45,7 @@ export interface SCEventWithoutReferences
 /**
 * An event
 */
-export interface SCEvent
-  extends SCEventWithoutReferences, SCThing {
+export interface SCEvent extends SCEventWithoutReferences, SCThing {
  /**
   * Academic terms that an event belongs to, e.g. semester(s).
   */
@@ -79,14 +77,13 @@ export interface SCEvent
 /**
 * Meta information about events
 */
-export class SCEventMeta
-  extends SCThingMeta implements SCMetaTranslations<SCEvent> {
+export class SCEventMeta extends SCThingMeta implements SCMetaTranslations<SCEvent> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      academicTerms: 'Semester',
      catalogs: 'Verzeichnis',
      creativeWorks: 'begleitende Werke',
@@ -96,7 +93,7 @@ export class SCEventMeta
      remainingAttendeeCapacity: 'verfügbare Anzahl an Teilnehmern',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      academicTerms: 'academic terms',
      catalogs: 'catalogs',
      creativeWorks: 'related material',
@@ -112,10 +109,10 @@ export class SCEventMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
--- a/src/things/abstract/place.ts
+++ b/src/things/abstract/place.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,7 +12,6 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-// tslint:disable-next-line:no-implicit-dependencies
 import {Point, Polygon} from 'geojson';
 import {SCMetaTranslations, SCTranslations} from '../../general/i18n';
 import {SCBuildingWithoutReferences} from '../building';
@@ -84,8 +83,7 @@ export interface SCPostalAddress {
 /**
 * A place without references
 */
-export interface SCPlaceWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCPlaceWithoutReferences extends SCThingWithoutReferences {
  /**
   * Address of the place
   */
@@ -116,8 +114,7 @@ export interface SCPlaceWithoutReferences
 /**
 * A place
 */
-export interface SCPlace
-  extends SCPlaceWithoutReferences, SCThing {
+export interface SCPlace extends SCPlaceWithoutReferences, SCThing {
  /**
   * Translated fields of a place
   */
@@ -127,8 +124,7 @@ export interface SCPlace
 /**
 * Translatable properties of a place without references
 */
-export interface SCPlaceWithoutReferencesTranslatableProperties
-  extends SCThingTranslatableProperties {
+export interface SCPlaceWithoutReferencesTranslatableProperties extends SCThingTranslatableProperties {
  /**
   * Address of a place
   */
@@ -139,19 +135,21 @@ export interface SCPlaceWithoutReferencesTranslatableProperties
 * Meta information about creative works
 */
 export class SCPlaceWithoutReferencesMeta
-  extends SCThingMeta implements SCMetaTranslations<SCPlaceWithoutReferences> {
+  extends SCThingMeta
+  implements SCMetaTranslations<SCPlaceWithoutReferences>
+{
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      address: 'Adresse',
      geo: 'Geoinformation',
      openingHours: 'Öffnungszeiten',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      address: 'address',
      geo: 'geographic information',
      openingHours: 'opening hours',
@@ -163,10 +161,10 @@ export class SCPlaceWithoutReferencesMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
@@ -181,8 +179,5 @@ export interface SCInPlace {
  /**
   * Place the thing is or happens in
   */
-  inPlace?:
-    SCBuildingWithoutReferences
-    | SCPointOfInterestWithoutReferences
-    | SCRoomWithoutReferences;
+  inPlace?: SCBuildingWithoutReferences | SCPointOfInterestWithoutReferences | SCRoomWithoutReferences;
 }
--- a/src/things/abstract/range.ts
+++ b/src/things/abstract/range.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -24,41 +24,43 @@ export type SCISO8601DateRange = SCRange<SCISO8601Date>;
 /**
 * Generic range type
 */
-export type SCRange<T> = {
-  /**
-   * Greater than value
-   */
-  gt?: never;
+export type SCRange<T> =
+  | {
+      /**
+       * Greater than value
+       */
+      gt?: never;

-  /**
-   * Greater or equal to value
-   */
-  gte?: T;
+      /**
+       * Greater or equal to value
+       */
+      gte?: T;

-  /**
-   * Greater than value
-   */
-  lt?: never;
+      /**
+       * Greater than value
+       */
+      lt?: never;

-  /**
-   * Greater or equal to value
-   */
-  lte?: T;
-} | {
-  // tslint:disable:completed-docs
-  gt?: T;
-  gte?: never;
-  lt?: T;
-  lte?: never;
-} | {
-  gt?: T;
-  gte?: never;
-  lt?: never;
-  lte?: T;
-} | {
-  gt?: never;
-  gte?: T;
-  lt?: T;
-  lte?: never;
-  // tslint:enable:completed-docs
-};
+      /**
+       * Greater or equal to value
+       */
+      lte?: T;
+    }
+  | {
+      gt?: T;
+      gte?: never;
+      lt?: T;
+      lte?: never;
+    }
+  | {
+      gt?: T;
+      gte?: never;
+      lt?: never;
+      lte?: T;
+    }
+  | {
+      gt?: never;
+      gte?: T;
+      lt?: T;
+      lte?: never;
+    };
--- a/src/things/abstract/saveable-thing.ts
+++ b/src/things/abstract/saveable-thing.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -18,15 +18,12 @@ import {SCThing, SCThingUserOrigin, SCThingWithoutReferences} from './thing';
 /**
 * An encapsulation of the data (e.g. a thing) that is saved, which provides additional information.
 */
-export interface SCSaveableThingWithoutReferences
-  extends SCThingWithoutReferences {
-}
+export type SCSaveableThingWithoutReferences = SCThingWithoutReferences;

 /**
 * An encapsulation of the data (e.g. a thing) that is saved, which provides additional information.
 */
-export interface SCSaveableThing
-  extends SCSaveableThingWithoutReferences, SCThing {
+export interface SCSaveableThing extends SCSaveableThingWithoutReferences, SCThing {
  /**
   * The contained data
   */
--- a/src/things/abstract/thing-in-place.ts
+++ b/src/things/abstract/thing-in-place.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -19,26 +19,24 @@ import {SCThing, SCThingMeta} from './thing';
 /**
 * A thing that is or happens in a place
 */
-export interface SCThingInPlace
-  extends SCThing, SCInPlace {
+export interface SCThingInPlace extends SCThing, SCInPlace {
  // noop
 }

 /**
 * Meta information about thing in a place
 */
-export class SCThingInPlaceMeta
-  extends SCThingMeta implements SCMetaTranslations<SCThingInPlace> {
+export class SCThingInPlaceMeta extends SCThingMeta implements SCMetaTranslations<SCThingInPlace> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      inPlace: 'Ort',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      inPlace: 'location',
    },
  };
@@ -48,10 +46,10 @@ export class SCThingInPlaceMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
--- a/src/things/abstract/thing-that-accepts-payments.ts
+++ b/src/things/abstract/thing-that-accepts-payments.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -18,16 +18,12 @@ import {SCThing, SCThingMeta, SCThingWithoutReferences} from './thing';
 /**
 * Types of payment that are accepted at a place.
 */
-export type SCThingThatAcceptsPaymentsAcceptedPayments =
-  'cash'
-  | 'credit'
-  | 'cafeteria card';
+export type SCThingThatAcceptsPaymentsAcceptedPayments = 'cash' | 'credit' | 'cafeteria card';

 /**
 * A thing without references that accepts payments
 */
-export interface SCThingThatAcceptsPaymentsWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCThingThatAcceptsPaymentsWithoutReferences extends SCThingWithoutReferences {
  /**
   * Accepted payments of the place
   *
@@ -39,8 +35,7 @@ export interface SCThingThatAcceptsPaymentsWithoutReferences
 /**
 * A thing that accepts payments
 */
-export interface SCThingThatAcceptsPayments
-  extends SCThingThatAcceptsPaymentsWithoutReferences, SCThing {
+export interface SCThingThatAcceptsPayments extends SCThingThatAcceptsPaymentsWithoutReferences, SCThing {
  // noop
 }

@@ -48,17 +43,19 @@ export interface SCThingThatAcceptsPayments
 * Meta information about a thing without references that accepts payments
 */
 export class SCThingThatAcceptsPaymentsWithoutReferencesMeta
-  extends SCThingMeta implements SCMetaTranslations<SCThingThatAcceptsPaymentsWithoutReferences> {
+  extends SCThingMeta
+  implements SCMetaTranslations<SCThingThatAcceptsPaymentsWithoutReferences>
+{
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      paymentsAccepted: 'Bezahlmethoden',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      paymentsAccepted: 'accepted payment methods',
    },
  };
@@ -68,7 +65,7 @@ export class SCThingThatAcceptsPaymentsWithoutReferencesMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
      paymentsAccepted: {
        'cafeteria card': 'Mensakarte',
        'cash': 'Bar',
@@ -76,7 +73,7 @@ export class SCThingThatAcceptsPaymentsWithoutReferencesMeta
      },
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
 }
--- a/src/things/abstract/thing-that-can-be-offered.ts
+++ b/src/things/abstract/thing-that-can-be-offered.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -35,8 +35,7 @@ export interface SCPriceGroup {
 /**
 * Price distinctions for academic context
 */
-export interface SCAcademicPriceGroup
-  extends SCPriceGroup {
+export interface SCAcademicPriceGroup extends SCPriceGroup {
  /**
   * Price for employees
   *
@@ -65,8 +64,7 @@ export interface SCAcademicPriceGroup
 /**
 * A thing without references that can be offered
 */
-export interface SCThingThatCanBeOfferedWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCThingThatCanBeOfferedWithoutReferences extends SCThingWithoutReferences {
  /**
   * Translations of a thing that can be offered
   */
@@ -77,7 +75,8 @@ export interface SCThingThatCanBeOfferedWithoutReferences
 * A thing that can be offered
 */
 export interface SCThingThatCanBeOffered<T extends SCPriceGroup>
-  extends SCThing, SCThingThatCanBeOfferedWithoutReferences {
+  extends SCThing,
+    SCThingThatCanBeOfferedWithoutReferences {
  /**
   * List of offers for that thing
   */
@@ -92,8 +91,7 @@ export interface SCThingThatCanBeOffered<T extends SCPriceGroup>
 /**
 * Offer of a thing
 */
-export interface SCThingThatCanBeOfferedOffer<T extends SCPriceGroup>
-  extends SCInPlace {
+export interface SCThingThatCanBeOfferedOffer<T extends SCPriceGroup> extends SCInPlace {
  /**
   * Availability of an offer
   */
@@ -107,7 +105,7 @@ export interface SCThingThatCanBeOfferedOffer<T extends SCPriceGroup>
  /**
   * List of prices that are distinct for specific groups
   */
-  prices: T;
+  prices?: T;

  /**
   * Provider of an offer
@@ -118,8 +116,7 @@ export interface SCThingThatCanBeOfferedOffer<T extends SCPriceGroup>
 /**
 * Translatable properties of a thing that can be offered
 */
-export interface SCThingThatCanBeOfferedTranslatableProperties
-  extends SCThingTranslatableProperties {
+export interface SCThingThatCanBeOfferedTranslatableProperties extends SCThingTranslatableProperties {
  /**
   * Availability of an offer
   *
@@ -131,9 +128,7 @@ export interface SCThingThatCanBeOfferedTranslatableProperties
 /**
 * Entity responsible for the offer
 */
-export type SCThingThatCanBeOfferedProvider =
-  | SCOrganizationWithoutReferences
-  | SCPersonWithoutReferences;
+export type SCThingThatCanBeOfferedProvider = SCOrganizationWithoutReferences | SCPersonWithoutReferences;

 /**
 * Availability of an Offer
@@ -148,23 +143,18 @@ export type SCThingThatCanBeOfferedAvailability =
 * Meta information about a thing without references that accepts payments
 */
 export class SCThingThatCanBeOfferedMeta<T extends SCPriceGroup>
-  implements SCMetaTranslations<SCThingThatCanBeOffered<T>> {
-
-  /**
-   * Instance
-   */
-  protected static _instance = new Map<string, unknown>();
-
+  implements SCMetaTranslations<SCThingThatCanBeOffered<T>>
+{
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      offers: 'Angebote',
    },
    en: {
-      ...SCThingMeta.getInstance().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      offers: 'offers',
    },
  };
@@ -174,26 +164,10 @@ export class SCThingThatCanBeOfferedMeta<T extends SCPriceGroup>
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
-
-  // tslint:disable:static-this
-  /**
-   * Function to retrieve typed singleton instance (including generics)
-   */
-  public static getInstance<T extends SCPriceGroup>(): SCThingThatCanBeOfferedMeta<T> {
-    if (!SCThingThatCanBeOfferedMeta._instance.has(this.name)) {
-      SCThingThatCanBeOfferedMeta._instance.set(this.name, new SCThingThatCanBeOfferedMeta<T>());
-    }
-
-    return SCThingThatCanBeOfferedMeta._instance
-      .get(this.name) as SCThingThatCanBeOfferedMeta<T>;
-  }
-
-  protected constructor() {
-  }
 }
--- a/src/things/abstract/thing-with-categories.ts
+++ b/src/things/abstract/thing-with-categories.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -50,7 +50,8 @@ export interface SCThingWithCategoriesWithoutReferences<T, U extends SCThingWith
 * A thing with categories
 */
 export interface SCThingWithCategories<T, U extends SCThingWithCategoriesSpecificValues>
-  extends SCThing, SCThingWithCategoriesWithoutReferences<T, U> {
+  extends SCThing,
+    SCThingWithCategoriesWithoutReferences<T, U> {
  /**
   * Translated fields of a thing with categories
   */
@@ -60,8 +61,7 @@ export interface SCThingWithCategories<T, U extends SCThingWithCategoriesSpecifi
 /**
 * Translatable properties of a thing with categories
 */
-export interface SCThingWithCategoriesTranslatableProperties
-  extends SCThingTranslatableProperties {
+export interface SCThingWithCategoriesTranslatableProperties extends SCThingTranslatableProperties {
  /**
   * translations of the categories of a thing with categories
   *
@@ -118,24 +118,19 @@ export interface SCThingWithCategoriesSpecificValues {
 * It intentionally does not extend the SCThingMeta implementation to be able to include generics.
 */
 export class SCThingWithCategoriesWithoutReferencesMeta<T, U>
-  implements SCMetaTranslations<SCThingWithCategoriesWithoutReferences<T, U>> {
-
-  /**
-   * Instance
-   */
-  protected static _instance = new Map<string, unknown>();
-
+  implements SCMetaTranslations<SCThingWithCategoriesWithoutReferences<T, U>>
+{
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      categories: 'Kategorien',
      categorySpecificValues: 'besondere Kategorien',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      categories: 'categories',
      categorySpecificValues: 'category with specific values',
    },
@@ -146,27 +141,10 @@ export class SCThingWithCategoriesWithoutReferencesMeta<T, U>
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
    },
  };
-
-  // tslint:disable:static-this
-  /**
-   * Function to retrieve typed singleton instance (including generics)
-   */
-  public static getInstance<T, U>(): SCThingWithCategoriesWithoutReferencesMeta<T, U> {
-    if (!SCThingWithCategoriesWithoutReferencesMeta._instance.has(this.name)) {
-      SCThingWithCategoriesWithoutReferencesMeta._instance
-        .set(this.name, new SCThingWithCategoriesWithoutReferencesMeta<T, U>());
-    }
-
-    return SCThingWithCategoriesWithoutReferencesMeta._instance
-      .get(this.name) as SCThingWithCategoriesWithoutReferencesMeta<T, U>;
-  }
-
-  protected constructor() {
-  }
 }
--- a/src/things/abstract/thing.ts
+++ b/src/things/abstract/thing.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -269,11 +269,6 @@ export interface SCThingTranslatablePropertyOrigin {
 * Meta information about things
 */
 export class SCThingMeta implements SCMetaTranslations<SCThing> {
-  /**
-   * Set type definition for singleton instance
-   */
-  protected static _instance = new Map<string, unknown>();
-
  /**
   * Translations of fields
   */
@@ -315,19 +310,4 @@ export class SCThingMeta implements SCMetaTranslations<SCThing> {
      type: 'Thing',
    },
  };
-
-  // tslint:disable:static-this
-  /**
-   * Function to retrieve typed singleton instance
-   */
-  public static getInstance<T extends SCThingMeta>(): T {
-    if (!SCThingMeta._instance.has(this.name)) {
-      SCThingMeta._instance.set(this.name, new this());
-    }
-
-    return SCThingMeta._instance.get(this.name) as T;
-  }
-
-  protected constructor() {
-  }
 }
--- a/src/things/abstract/user-groups.ts
+++ b/src/things/abstract/user-groups.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -15,7 +15,4 @@
 /**
 * Types of data consumers
 */
-export type SCUserGroup =
-  'students'
-  | 'employees'
-  | 'guests';
+export type SCUserGroup = 'students' | 'employees' | 'guests';
--- a/src/things/academic-event.ts
+++ b/src/things/academic-event.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -64,7 +64,8 @@ export interface SCAcademicEventWithoutReferences
 * @indexable
 */
 export interface SCAcademicEvent
-  extends SCEvent, SCAcademicEventWithoutReferences,
+  extends SCEvent,
+    SCAcademicEventWithoutReferences,
    SCThingWithCategories<SCAcademicEventCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Translated fields of an academic event
@@ -81,7 +82,7 @@ export interface SCAcademicEvent
 * Categories of academic events
 */
 export type SCAcademicEventCategories =
-  'lecture'
+  | 'lecture'
  | 'seminar'
  | 'integrated course'
  | 'written exam'
@@ -100,8 +101,7 @@ export type SCAcademicEventCategories =
 /**
 * Translatable properties of an academic event
 */
-export interface SCAcademicEventTranslatableProperties
-  extends SCThingWithCategoriesTranslatableProperties {
+export interface SCAcademicEventTranslatableProperties extends SCThingWithCategoriesTranslatableProperties {
  /**
   * Translations of the majors of the academic event that this event belongs to
   *
@@ -120,24 +120,26 @@ export interface SCAcademicEventTranslatableProperties
 /**
 * Meta information about academic events
 */
-export class SCAcademicEventMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCAcademicEvent> {
+export class SCAcademicEventMeta extends SCThingMeta implements SCMetaTranslations<SCAcademicEvent> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCEventMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAcademicEventCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
      majors: 'Hauptfächer',
      originalCategory: 'ursprüngliche Kategorie',
    },
    en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCEventMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAcademicEventCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
      majors: 'majors',
      originalCategory: 'original category',
    },
@@ -148,9 +150,11 @@ export class SCAcademicEventMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCEventMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAcademicEventCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
      categories: {
        'colloquium': 'Kolloquium',
        'course': 'Kurs',
@@ -171,9 +175,11 @@ export class SCAcademicEventMeta
      type: 'akademische Veranstaltung',
    },
    en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAcademicEventCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCEventMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAcademicEventCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
      type: SCThingType.AcademicEvent,
    },
  };
--- a/src/things/article.ts
+++ b/src/things/article.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -20,6 +20,13 @@ import {
  SCCreativeWorkWithoutReferences,
 } from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {
+  SCAcademicPriceGroup,
+  SCThingThatCanBeOffered,
+  SCThingThatCanBeOfferedMeta,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCThingThatCanBeOfferedWithoutReferences,
+} from './abstract/thing-that-can-be-offered';
 import {
  SCThingWithCategoriesSpecificValues,
  SCThingWithCategoriesTranslatableProperties,
@@ -31,16 +38,15 @@ import {SCPeriodicalWithoutReferences} from './periodical';
 /**
 * Categories of an article
 */
-export type SCArticleCategories = 'unipedia'
-  | 'article'
-  | 'eArticle';
+export type SCArticleCategories = 'unipedia' | 'article' | 'eArticle';

 /**
 * An article without references
 */
 export interface SCArticleWithoutReferences
  extends SCCreativeWorkWithoutReferences,
-  SCThingWithCategoriesWithoutReferences<SCArticleCategories, SCThingWithCategoriesSpecificValues> {
+    SCThingThatCanBeOfferedWithoutReferences,
+    SCThingWithCategoriesWithoutReferences<SCArticleCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Article itself as markdown
   *
@@ -71,7 +77,9 @@ export interface SCArticleWithoutReferences
 * @indexable
 */
 export interface SCArticle
-  extends SCCreativeWork, SCArticleWithoutReferences {
+  extends SCCreativeWork,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+    SCArticleWithoutReferences {
  /**
   * A periodical to which this article belongs
   */
@@ -96,7 +104,9 @@ export interface SCArticle
 * Translatable properties of an article
 */
 export interface SCArticleTranslatableProperties
-  extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
+  extends SCThingWithCategoriesTranslatableProperties,
+    SCThingThatCanBeOfferedTranslatableProperties,
+    SCCreativeWorkTranslatableProperties {
  /**
   * Translation of the article itself as markdown
   *
@@ -108,26 +118,29 @@ export interface SCArticleTranslatableProperties
 /**
 * Meta information about an article
 */
-export class SCArticleMeta
-  extends SCThingMeta implements SCMetaTranslations<SCArticle> {
+export class SCArticleMeta extends SCThingMeta implements SCMetaTranslations<SCArticle> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCArticleCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCArticleCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      categories: 'Format',
      reference: 'Referenz',
      articleBody: 'Artikelinhalt',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCArticleCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCArticleCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
      categories: 'format',
      reference: 'reference',
      articleBody: 'article body',
@@ -139,8 +152,12 @@ export class SCArticleMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCArticleCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
      categories: {
        article: 'Artikel',
        eArticle: 'E-Aufsatz',
@@ -149,8 +166,12 @@ export class SCArticleMeta
      type: 'Artikel',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCArticleCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
      type: SCThingType.Article,
      categories: {
        article: 'article',
--- a/src/things/assessment.ts
+++ b/src/things/assessment.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -16,59 +16,67 @@
 import {SCMetaTranslations, SCTranslations} from '../general/i18n';
 import {SCISO8601Date} from '../general/time';
 import {SCThing, SCThingMeta, SCThingType} from './abstract/thing';
-import {SCThingWithCategories, SCThingWithCategoriesSpecificValues, SCThingWithCategoriesTranslatableProperties, SCThingWithCategoriesWithoutReferences, SCThingWithCategoriesWithoutReferencesMeta} from './abstract/thing-with-categories';
+import {
+  SCThingWithCategories,
+  SCThingWithCategoriesSpecificValues,
+  SCThingWithCategoriesTranslatableProperties,
+  SCThingWithCategoriesWithoutReferences,
+  SCThingWithCategoriesWithoutReferencesMeta,
+} from './abstract/thing-with-categories';
 import {SCCourseOfStudyWithoutReferences} from './course-of-study';

-
 /**
 * Categories of assessments
 */
- export type SCAssessmentCategories = 'university assessment';
+export type SCAssessmentCategories = 'university assessment';

 /**
 * An assessment without references
 *
 */
 export interface SCAssessmentWithoutReferences
-  extends SCThingWithCategoriesWithoutReferences<SCAssessmentCategories, SCThingWithCategoriesSpecificValues> {
-    /**
-     * Number of attempts
-     *
-     * @integer
-     */
-    attempt?: number;
+  extends SCThingWithCategoriesWithoutReferences<
+    SCAssessmentCategories,
+    SCThingWithCategoriesSpecificValues
+  > {
+  /**
+   * Number of attempts
+   *
+   * @integer
+   */
+  attempt?: number;

-    /**
-     * Date assessment was taken or graded
-     */
-    date?: SCISO8601Date;
+  /**
+   * Date assessment was taken or graded
+   */
+  date?: SCISO8601Date;

-    /**
-     * ECTS (credit-points)
-     *
-     * @float
-     */
-    ects?: number;
+  /**
+   * ECTS (credit-points)
+   *
+   * @float
+   */
+  ects?: number;

-    /**
-     * Grade
-     */
-    grade: string;
+  /**
+   * Grade
+   */
+  grade: string;

-    /**
-     * Current status
-     */
-    status?: string;
+  /**
+   * Current status
+   */
+  status?: string;

-    /**
-     * Translated fields of an assessment
-     */
-    translations?: SCTranslations<SCAssessmentTranslatableProperties>;
+  /**
+   * Translated fields of an assessment
+   */
+  translations?: SCTranslations<SCAssessmentTranslatableProperties>;

-    /**
-     * Type of an assessment
-     */
-    type: SCThingType.Assessment;
+  /**
+   * Type of an assessment
+   */
+  type: SCThingType.Assessment;
 }

 /**
@@ -77,9 +85,9 @@ export interface SCAssessmentWithoutReferences
 * @validatable
 */
 export interface SCAssessment
-  extends SCAssessmentWithoutReferences, SCThing,
+  extends SCAssessmentWithoutReferences,
+    SCThing,
    SCThingWithCategories<SCAssessmentCategories, SCThingWithCategoriesSpecificValues> {
-
  /**
   * Course of study the assessment was taken for
   */
@@ -99,30 +107,28 @@ export interface SCAssessment
   * Type of an assessment
   */
  type: SCThingType.Assessment;
-
 }

-export interface SCAssessmentTranslatableProperties
-  extends SCThingWithCategoriesTranslatableProperties {
+export interface SCAssessmentTranslatableProperties extends SCThingWithCategoriesTranslatableProperties {
  /**
   * @see SCAssessmentWithoutReferences.status
   */
-   status?: string;
+  status?: string;
 }

 /**
 * Study module meta data
 */
- export class SCAssessmentMeta
- extends SCThingMeta
- implements SCMetaTranslations<SCAssessment> {
+export class SCAssessmentMeta extends SCThingMeta implements SCMetaTranslations<SCAssessment> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
-         SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAssessmentCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
      attempt: 'Versuch',
      courseOfStudy: 'Studiengang',
      date: 'Datum',
@@ -132,8 +138,10 @@ export interface SCAssessmentTranslatableProperties
      superAssessments: 'übergeordnete Prüfungen',
    },
    en: {
-     ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAssessmentCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
      attempt: 'attempt',
      courseOfStudy: 'course of study',
      date: 'date',
@@ -149,13 +157,17 @@ export interface SCAssessmentTranslatableProperties
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
-      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAssessmentCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
      type: 'Prüfung',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCAssessmentCategories,
-      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCAssessmentCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
      type: SCThingType.Assessment,
    },
  };
--- a/src/things/book.ts
+++ b/src/things/book.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -20,6 +20,13 @@ import {
  SCCreativeWorkWithoutReferences,
 } from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {
+  SCAcademicPriceGroup,
+  SCThingThatCanBeOffered,
+  SCThingThatCanBeOfferedMeta,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCThingThatCanBeOfferedWithoutReferences,
+} from './abstract/thing-that-can-be-offered';
 import {
  SCThingWithCategoriesSpecificValues,
  SCThingWithCategoriesTranslatableProperties,
@@ -30,7 +37,8 @@ import {
 /**
 * Categories of a book
 */
-export type SCBookCategories = 'audio'
+export type SCBookCategories =
+  | 'audio'
  | 'book'
  | 'cd'
  | 'dvd'
@@ -54,7 +62,8 @@ export type SCBookCategories = 'audio'
 */
 export interface SCBookWithoutReferences
  extends SCCreativeWorkWithoutReferences,
-  SCThingWithCategoriesWithoutReferences<SCBookCategories, SCThingWithCategoriesSpecificValues> {
+    SCThingThatCanBeOfferedWithoutReferences,
+    SCThingWithCategoriesWithoutReferences<SCBookCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Categories of a book
   */
@@ -93,7 +102,9 @@ export interface SCBookWithoutReferences
 * @indexable
 */
 export interface SCBook
-  extends SCCreativeWork, SCBookWithoutReferences {
+  extends SCCreativeWork,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+    SCBookWithoutReferences {
  /**
   * Translated properties of a book
   */
@@ -109,8 +120,9 @@ export interface SCBook
 * Translatable properties of a book
 */
 export interface SCBookTranslatableFields
-  extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
-}
+  extends SCThingWithCategoriesTranslatableProperties,
+    SCThingThatCanBeOfferedTranslatableProperties,
+    SCCreativeWorkTranslatableProperties {}

 /**
 * Meta information about a book
@@ -121,17 +133,23 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
   */
  fieldTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBookCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      categories: 'Format',
      ISBNs: 'ISBN',
      numberOfPages: 'Seitenanzahl',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBookCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
      categories: 'format',
      ISBNs: 'ISBN',
      numberOfPages: 'number of pages',
@@ -143,10 +161,12 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
   */
  fieldValueTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
-      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBookCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
      categories: {
        audio: 'Tonträger',
        book: 'Buch',
@@ -170,10 +190,12 @@ export class SCBookMeta extends SCThingMeta implements SCMetaTranslations<SCBook
      type: 'Buch',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBookCategories,
-      SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBookCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
      type: SCThingType.Book,
      categories: {
        audio: 'audio material',
--- a/src/things/building.ts
+++ b/src/things/building.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -29,7 +29,7 @@ import {
 } from './abstract/thing-with-categories';

 export type SCBuildingCategories =
-  'cafe'
+  | 'cafe'
  | 'education'
  | 'library'
  | 'office'
@@ -67,7 +67,8 @@ export interface SCBuildingWithoutReferences
 * @indexable
 */
 export interface SCBuilding
-  extends SCBuildingWithoutReferences, SCPlace,
+  extends SCBuildingWithoutReferences,
+    SCPlace,
    SCThingWithCategories<SCBuildingCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Translated fields of a building
@@ -81,7 +82,8 @@ export interface SCBuilding
 }

 export interface SCBuildingTranslatableProperties
-  extends SCPlaceWithoutReferencesTranslatableProperties, SCThingWithCategoriesTranslatableProperties {
+  extends SCPlaceWithoutReferencesTranslatableProperties,
+    SCThingWithCategoriesTranslatableProperties {
  /**
   * @see SCBuilding.floors
   */
@@ -91,23 +93,25 @@ export interface SCBuildingTranslatableProperties
 /**
 * Meta information about a place
 */
-export class SCBuildingMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCBuilding> {
+export class SCBuildingMeta extends SCThingMeta implements SCMetaTranslations<SCBuilding> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBuildingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.de,
      floors: 'Etagen',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBuildingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.en,
      floors: 'floors',
    },
  };
@@ -117,9 +121,11 @@ export class SCBuildingMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBuildingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.de,
      categories: {
        'cafe': 'Café',
        'canteen': 'Kantine',
@@ -133,9 +139,11 @@ export class SCBuildingMeta
      type: 'Gebäude',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCBuildingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCBuildingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.en,
      type: SCThingType.Building,
    },
  };
--- a/src/things/catalog.ts
+++ b/src/things/catalog.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -51,7 +51,8 @@ export interface SCCatalogWithoutReferences
 * @indexable
 */
 export interface SCCatalog
-  extends SCCatalogWithoutReferences, SCThing,
+  extends SCCatalogWithoutReferences,
+    SCThing,
    SCThingWithCategories<SCCatalogCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Academic term that a catalog belongs to (e.g. semester)
@@ -82,23 +83,26 @@ export interface SCCatalog
 /**
 * Catalog meta data
 */
-export class SCCatalogMeta
-  extends SCThingMeta implements SCMetaTranslations<SCCatalog> {
+export class SCCatalogMeta extends SCThingMeta implements SCMetaTranslations<SCCatalog> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCCatalogCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
      academicTerm: 'Semester',
      level: 'Ebene',
      superCatalog: 'übergeordnetes Verzeichniss',
      superCatalogs: 'übergeordnete Verzeichnisse',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCCatalogCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
      academicTerm: 'academic term',
      level: 'level',
      superCatalog: 'parent catalog',
@@ -111,16 +115,20 @@ export class SCCatalogMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCCatalogCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
      categories: {
        'university events': 'Universitätsveranstaltung',
      },
      type: 'Verzeichnis',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCCatalogCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCCatalogCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
      type: SCThingType.Catalog,
    },
  };
--- a/src/things/contact-point.ts
+++ b/src/things/contact-point.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -14,19 +14,13 @@
 */

 import {SCMetaTranslations} from '../general/i18n';
-import {
-  SCThing,
-  SCThingMeta,
-  SCThingType,
-  SCThingWithoutReferences,
-  } from './abstract/thing';
+import {SCThing, SCThingMeta, SCThingType, SCThingWithoutReferences} from './abstract/thing';
 import {SCRoomWithoutReferences} from './room';

 /**
 * A contact point without references
 */
-export interface SCContactPointWithoutReferences
-  extends SCThingWithoutReferences  {
+export interface SCContactPointWithoutReferences extends SCThingWithoutReferences {
  /**
   * E-mail at the work location
   *
@@ -73,12 +67,10 @@ export interface SCContactPointWithoutReferences
 * A contact point
 *
 * @see http://schema.org/ContactPoint
- * 
 * @validatable
 * @indexable
 */
-export interface SCContactPoint
-  extends SCContactPointWithoutReferences, SCThing  {
+export interface SCContactPoint extends SCContactPointWithoutReferences, SCThing {
  /**
   * Exact place where work is performed
   */
@@ -93,15 +85,13 @@ export interface SCContactPoint
 /**
 * Meta information about a contact point
 */
-export class SCContactPointMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCContactPoint> {
+export class SCContactPointMeta extends SCThingMeta implements SCMetaTranslations<SCContactPoint> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      areaServed: 'Arbeitsraum',
      email: 'E-Mail-Addresse',
      faxNumber: 'Faxnummer',
@@ -110,7 +100,7 @@ export class SCContactPointMeta
      url: 'Link',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      areaServed: 'location',
      email: 'email address',
      faxNumber: 'fax number',
@@ -125,11 +115,11 @@ export class SCContactPointMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
      type: 'Kontaktinformation',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
      type: SCThingType.ContactPoint,
    },
  };
--- a/src/things/course-of-study.ts
+++ b/src/things/course-of-study.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -13,7 +13,11 @@
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
 import {SCLanguage, SCMetaTranslations, SCTranslations} from '../general/i18n';
-import {SCAcademicDegree, SCAcademicDegreeMeta, SCAcademicDegreeWithoutReferences} from './abstract/academic-degree';
+import {
+  SCAcademicDegree,
+  SCAcademicDegreeMeta,
+  SCAcademicDegreeWithoutReferences,
+} from './abstract/academic-degree';
 import {SCThingMeta, SCThingType} from './abstract/thing';
 import {
  SCAcademicPriceGroup,
@@ -29,7 +33,8 @@ import {SCOrganizationWithoutReferences} from './organization';
 * A course of study without references
 */
 export interface SCCourseOfStudyWithoutReferences
-  extends SCAcademicDegreeWithoutReferences, SCThingThatCanBeOfferedWithoutReferences {
+  extends SCAcademicDegreeWithoutReferences,
+    SCThingThatCanBeOfferedWithoutReferences {
  /**
   * The main language in which the course of study
   * is beeing offered
@@ -68,7 +73,9 @@ export interface SCCourseOfStudyWithoutReferences
 * @indexable
 */
 export interface SCCourseOfStudy
-  extends SCCourseOfStudyWithoutReferences, SCThingThatCanBeOffered<SCAcademicPriceGroup>, SCAcademicDegree {
+  extends SCCourseOfStudyWithoutReferences,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+    SCAcademicDegree {
  /**
   * The department that manages the course of study
   */
@@ -99,26 +106,19 @@ export interface SCCourseOfStudy
 /**
 * Translatable properties of a course of study
 */
-export interface SCCourseOfStudyTranslatableProperties
-  extends SCThingThatCanBeOfferedTranslatableProperties {
-    // noop
-}
+export type SCCourseOfStudyTranslatableProperties = SCThingThatCanBeOfferedTranslatableProperties;

 /**
 * Meta information about a course of study
 */
-export class SCCourseOfStudyMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCCourseOfStudy> {
+export class SCCourseOfStudyMeta extends SCThingMeta implements SCMetaTranslations<SCCourseOfStudy> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCAcademicDegreeMeta.getInstance<SCAcademicDegreeMeta>()
-        .fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldTranslations.de,
+      ...new SCAcademicDegreeMeta().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      department: 'Fachbereich',
      mainLanguage: 'Unterrichtssprache',
      mode: 'Studiengangsart',
@@ -127,10 +127,8 @@ export class SCCourseOfStudyMeta
      timeMode: 'Zeitmodell',
    },
    en: {
-      ...SCAcademicDegreeMeta.getInstance<SCAcademicDegreeMeta>()
-        .fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldTranslations.de,
+      ...new SCAcademicDegreeMeta().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      department: 'department',
      mainLanguage: 'main language',
      mode: 'mode',
@@ -145,12 +143,12 @@ export class SCCourseOfStudyMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCAcademicDegreeMeta.getInstance().fieldValueTranslations.de,
+      ...new SCAcademicDegreeMeta().fieldValueTranslations.de,
      modes: {
-        combination: 'Kombinationsstudiengang',
+        'combination': 'Kombinationsstudiengang',
        'double-degree': 'Doppelstudium',
-        dual: 'duales Studium',
-        standard: 'Studium',
+        'dual': 'duales Studium',
+        'standard': 'Studium',
      },
      timeMode: {
        fulltime: 'Vollzeitstudiengang',
@@ -159,12 +157,12 @@ export class SCCourseOfStudyMeta
      type: 'Studiengang',
    },
    en: {
-      ...SCAcademicDegreeMeta.getInstance().fieldValueTranslations.en,
+      ...new SCAcademicDegreeMeta().fieldValueTranslations.en,
      modes: {
-        combination: 'combination course of study',
+        'combination': 'combination course of study',
        'double-degree': 'double degree course of study',
-        dual: 'dual course of study',
-        standard: 'course of study',
+        'dual': 'dual course of study',
+        'standard': 'course of study',
      },
      timeMode: {
        fulltime: 'full-time',
@@ -178,13 +176,9 @@ export class SCCourseOfStudyMeta
 /**
 * Types of (german) course of study modes
 */
-export type SCCourseOfStudyMode = 'combination'
-  | 'dual'
-  | 'double-degree'
-  | 'standard' ;
+export type SCCourseOfStudyMode = 'combination' | 'dual' | 'double-degree' | 'standard';

 /**
 * Types of (german) course of study time modes
 */
-export type SCCourseOfStudyTimeMode = 'fulltime'
-  | 'parttime' ;
+export type SCCourseOfStudyTimeMode = 'fulltime' | 'parttime';
--- a/src/things/date-series.ts
+++ b/src/things/date-series.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -30,8 +30,7 @@ import {SCSportCourseWithoutReferences} from './sport-course';
 /**
 * Price groups for sport courses
 */
-export interface SCSportCoursePriceGroup
-  extends SCAcademicPriceGroup {
+export interface SCSportCoursePriceGroup extends SCAcademicPriceGroup {
  /**
   * Price for alumnis
   *
@@ -43,8 +42,7 @@ export interface SCSportCoursePriceGroup
 /**
 * A date without references
 */
-export interface SCDateSeriesWithoutReferences
-  extends SCThingThatCanBeOfferedWithoutReferences {
+export interface SCDateSeriesWithoutReferences extends SCThingThatCanBeOfferedWithoutReferences {
  /**
   * Dates of the date series that are initially planned to be held
   *
@@ -93,8 +91,7 @@ export interface SCDateSeries
  /**
   * Event to which the date series belongs
   */
-  event: SCAcademicEventWithoutReferences
-    | SCSportCourseWithoutReferences;
+  event: SCAcademicEventWithoutReferences | SCSportCourseWithoutReferences;

  /**
   * Performers of the date series
@@ -115,18 +112,14 @@ export interface SCDateSeries
 /**
 * Meta information about a date series
 */
-export class SCDateSeriesMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCDateSeries> {
+export class SCDateSeriesMeta extends SCThingMeta implements SCMetaTranslations<SCDateSeries> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
-        .fieldTranslations.de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>().fieldTranslations.de,
      dates: 'Einzeltermine',
      duration: 'Dauer',
      event: 'Event',
@@ -135,10 +128,8 @@ export class SCDateSeriesMeta
      performers: 'Vortragende',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
-        .fieldTranslations.en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>().fieldTranslations.en,
      dates: 'dates',
      duration: 'duration',
      event: 'event',
@@ -153,17 +144,13 @@ export class SCDateSeriesMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
-        .fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
-        .fieldValueTranslations.de,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>().fieldValueTranslations.de,
      type: 'Terminserie',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
-        .fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCSportCoursePriceGroup>()
-        .fieldValueTranslations.en,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCSportCoursePriceGroup>().fieldValueTranslations.en,
      type: SCThingType.DateSeries,
    },
  };
@@ -172,6 +159,4 @@ export class SCDateSeriesMeta
 /**
 * Translatable properties of date series'
 */
-export interface SCDateSeriesTranslatableProperties
-  extends SCThingThatCanBeOfferedTranslatableProperties {
-}
+export type SCDateSeriesTranslatableProperties = SCThingThatCanBeOfferedTranslatableProperties;
--- a/src/things/diff.ts
+++ b/src/things/diff.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -21,8 +21,7 @@ import {SCThing, SCThingMeta, SCThingType, SCThingWithoutReferences} from './abs
 /**
 * A diff without references
 */
-export interface SCDiffWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCDiffWithoutReferences extends SCThingWithoutReferences {
  /**
   * Action of the diff
   */
@@ -49,8 +48,7 @@ export interface SCDiffWithoutReferences
 *
 * @validatable
 */
-export interface SCDiff
-  extends SCDiffWithoutReferences, SCThing {
+export interface SCDiff extends SCDiffWithoutReferences, SCThing {
  /**
   * Original object the diff was generated on
   */
@@ -65,22 +63,20 @@ export interface SCDiff
 /**
 * Meta information about a diff
 */
-export class SCDiffMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCDiff> {
+export class SCDiffMeta extends SCThingMeta implements SCMetaTranslations<SCDiff> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      action: 'Aktion',
      changes: 'Änderungen',
      dateCreated: 'Erstellungsdatum',
      object: 'Objekt',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      action: 'action',
      changes: 'changes',
      dateCreated: 'date created',
@@ -93,15 +89,15 @@ export class SCDiffMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
      action: {
-        'changed': 'geändert',
-        'removed': 'gelöscht',
+        changed: 'geändert',
+        removed: 'gelöscht',
      },
      type: 'Unterschied',
    },
    en: {
-      ...SCThingMeta.getInstance().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
      type: SCThingType.Diff,
    },
  };
--- a/src/things/dish.ts
+++ b/src/things/dish.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -71,7 +71,8 @@ export interface SCDishWithoutReferences
 * @indexable
 */
 export interface SCDish
-  extends SCDishWithoutReferences, SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+  extends SCDishWithoutReferences,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup>,
    SCThingWithCategories<SCDishCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Dishes ("Beilagen") that are served with the dish (if only certain supplement dishes can be taken with a dish)
@@ -90,7 +91,8 @@ export interface SCDish
 }

 export interface SCDishTranslatableProperties
-  extends SCThingWithCategoriesTranslatableProperties, SCThingThatCanBeOfferedTranslatableProperties {
+  extends SCThingWithCategoriesTranslatableProperties,
+    SCThingThatCanBeOfferedTranslatableProperties {
  /**
   * Additives of the dish
   *
@@ -127,13 +129,7 @@ export interface SCDishCharacteristic {
 /**
 * A list of categories for dishes
 */
-export type SCDishCategories =
-  | 'appetizer'
-  | 'salad'
-  | 'main dish'
-  | 'dessert'
-  | 'soup'
-  | 'side dish';
+export type SCDishCategories = 'appetizer' | 'salad' | 'main dish' | 'dessert' | 'soup' | 'side dish';

 /**
 * Type definition for SCNutritionInformation
@@ -194,28 +190,28 @@ export interface SCNutritionInformation {
 /**
 * Meta information about a dish
 */
-export class SCDishMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCDish> {
+export class SCDishMeta extends SCThingMeta implements SCMetaTranslations<SCDish> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCDishCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      additives: 'Zusatzstoffe',
      characteristics: 'Merkmale',
      dishAddOns: 'Beilagen',
      nutrition: 'Nährwertangaben',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCDishCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
      additives: 'additives',
      characteristics: 'characteristics',
      dishAddOns: 'side dishes',
@@ -228,25 +224,27 @@ export class SCDishMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCDishCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
      categories: {
-        appetizer: 'Vorspeise',
-        dessert: 'Nachtisch',
+        'appetizer': 'Vorspeise',
+        'dessert': 'Nachtisch',
        'main dish': 'Hauptgericht',
-        salad: 'Salat',
+        'salad': 'Salat',
        'side dish': 'Beilage',
-        soup: 'Suppe',
+        'soup': 'Suppe',
      },
      type: 'Essen',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCDishCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCDishCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
      type: SCThingType.Dish,
    },
  };
--- a/src/things/favorite.ts
+++ b/src/things/favorite.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -18,8 +18,7 @@ import {SCThingMeta, SCThingType} from './abstract/thing';
 /**
 * A favorite without references
 */
-export interface SCFavoriteWithoutReferences
-  extends SCSaveableThingWithoutReferences {
+export interface SCFavoriteWithoutReferences extends SCSaveableThingWithoutReferences {
  /**
   * Type of a favorite
   */
@@ -41,6 +40,4 @@ export interface SCFavorite extends SCSaveableThing {
 /**
 * Meta information about a favorite
 */
-export class SCFavoriteMeta
-  extends SCThingMeta {
-}
+export class SCFavoriteMeta extends SCThingMeta {}
--- a/src/things/floor.ts
+++ b/src/things/floor.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,10 +12,14 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-// tslint:disable-next-line:no-implicit-dependencies
 import {Feature, FeatureCollection, GeometryObject, LineString} from 'geojson';
 import {SCMetaTranslations, SCTranslations} from '../general/i18n';
-import {SCThingMeta, SCThingTranslatableProperties, SCThingType, SCThingWithoutReferences} from './abstract/thing';
+import {
+  SCThingMeta,
+  SCThingTranslatableProperties,
+  SCThingType,
+  SCThingWithoutReferences,
+} from './abstract/thing';
 import {SCThingInPlace, SCThingInPlaceMeta} from './abstract/thing-in-place';
 import {SCPointOfInterestWithoutReferences} from './point-of-interest';
 import {SCRoomWithoutReferences} from './room';
@@ -23,8 +27,7 @@ import {SCRoomWithoutReferences} from './room';
 /**
 * A floor without references
 */
-export interface SCFloorWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCFloorWithoutReferences extends SCThingWithoutReferences {
  /**
   * Floor name in the place it is in e.g. "first floor", "ground floor". This doesn't reference the building name.
   *
@@ -54,8 +57,7 @@ export interface SCFloorWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCFloor
-  extends SCFloorWithoutReferences, SCThingInPlace {
+export interface SCFloor extends SCFloorWithoutReferences, SCThingInPlace {
  /**
   * Translated fields of a floor
   */
@@ -70,8 +72,7 @@ export interface SCFloor
 /**
 * A feature collection
 */
-export interface SCFloorFeatureCollectionWithPlaces<T extends GeometryObject>
-  extends FeatureCollection<T> {
+export interface SCFloorFeatureCollectionWithPlaces<T extends GeometryObject> extends FeatureCollection<T> {
  /**
   * Features of the collection
   */
@@ -82,7 +83,7 @@ export interface SCFloorFeatureCollectionWithPlaces<T extends GeometryObject>
 * A feature with a place
 */
 export interface SCFloorFeatureWithPlace<T extends GeometryObject>
-  // tslint:disable-next-line:no-any TODO
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  extends Feature<T, any> {
  /**
   * The place of the feature
@@ -93,8 +94,7 @@ export interface SCFloorFeatureWithPlace<T extends GeometryObject>
 /**
 * Translatable properties of a floor
 */
-export interface SCFloorTranslatableProperties
-  extends SCThingTranslatableProperties {
+export interface SCFloorTranslatableProperties extends SCThingTranslatableProperties {
  /**
   * Translation of the floor name
   *
@@ -106,22 +106,18 @@ export interface SCFloorTranslatableProperties
 /**
 * Meta information about floors
 */
-export class SCFloorMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCFloor> {
+export class SCFloorMeta extends SCThingMeta implements SCMetaTranslations<SCFloor> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
      floorName: 'Etagenbezeichnung',
      plan: 'Grundriss',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
      floorName: 'floor name',
      plan: 'plan',
    },
@@ -132,13 +128,11 @@ export class SCFloorMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
-        .fieldValueTranslations.de,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.de,
      type: 'Etage',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
-        .fieldValueTranslations.en,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.en,
      type: SCThingType.Floor,
    },
  };
--- a/src/things/message.ts
+++ b/src/things/message.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -24,7 +24,8 @@ import {SCThingMeta, SCThingType} from './abstract/thing';
 import {SCThingThatCanBeOfferedTranslatableProperties} from './abstract/thing-that-can-be-offered';
 import {
  SCThingWithCategoriesSpecificValues,
-  SCThingWithCategoriesWithoutReferences, SCThingWithCategoriesWithoutReferencesMeta,
+  SCThingWithCategoriesWithoutReferences,
+  SCThingWithCategoriesWithoutReferencesMeta,
 } from './abstract/thing-with-categories';
 import {SCUserGroup} from './abstract/user-groups';
 import {SCOrganizationWithoutReferences} from './organization';
@@ -39,7 +40,7 @@ export type SCMessageCategories = 'news';
 */
 export interface SCMessageWithoutReferences
  extends SCCreativeWorkWithoutReferences,
-  SCThingWithCategoriesWithoutReferences<SCMessageCategories, SCThingWithCategoriesSpecificValues> {
+    SCThingWithCategoriesWithoutReferences<SCMessageCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Organizational unit for which the message is intended
   */
@@ -93,8 +94,7 @@ export interface SCMessageWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCMessage
-  extends SCCreativeWork, SCMessageWithoutReferences {
+export interface SCMessage extends SCCreativeWork, SCMessageWithoutReferences {
  /**
   * Translated fields of a message
   */
@@ -110,7 +110,8 @@ export interface SCMessage
 * Translatable properties of a message
 */
 export interface SCMessageTranslatableProperties
-  extends SCCreativeWorkTranslatableProperties, SCThingThatCanBeOfferedTranslatableProperties {
+  extends SCCreativeWorkTranslatableProperties,
+    SCThingThatCanBeOfferedTranslatableProperties {
  /**
   * Message itself
   *
@@ -122,18 +123,17 @@ export interface SCMessageTranslatableProperties
 /**
 * Meta information about messages
 */
-export class SCMessageMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCMessage> {
+export class SCMessageMeta extends SCThingMeta implements SCMetaTranslations<SCMessage> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCMessageCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCMessageCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
      audienceOrganizations: 'Zielgruppenorganisationen',
      audiences: 'Zielgruppen',
      dateCreated: 'Erstellungsdatum',
@@ -141,10 +141,11 @@ export class SCMessageMeta
      sequenceIndex: 'Sequenzindex',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCMessageCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCMessageCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
      audienceOrganizations: 'audience organizations',
      audiences: 'audiences',
      dateCreated: 'date created',
@@ -158,8 +159,11 @@ export class SCMessageMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCMessageCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
      audiences: {
        employees: 'Angestellte',
        guests: 'Gäste',
@@ -171,8 +175,11 @@ export class SCMessageMeta
      type: 'Nachricht',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCMessageCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
      type: SCThingType.Message,
    },
  };
--- a/src/things/organization.ts
+++ b/src/things/organization.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -20,8 +20,7 @@ import {SCContactPointWithoutReferences} from './contact-point';
 /**
 * An organization without references
 */
-export interface SCOrganizationWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCOrganizationWithoutReferences extends SCThingWithoutReferences {
  /**
   * Type of an organization
   */
@@ -34,8 +33,7 @@ export interface SCOrganizationWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCOrganization
-  extends SCOrganizationWithoutReferences, SCThingInPlace {
+export interface SCOrganization extends SCOrganizationWithoutReferences, SCThingInPlace {
  /**
   * A list of contact points concerning the organization
   */
@@ -50,18 +48,17 @@ export interface SCOrganization
 /**
 * Meta information about an organization
 */
-export class SCOrganizationMeta
-  extends SCThingMeta implements SCMetaTranslations<SCOrganization> {
+export class SCOrganizationMeta extends SCThingMeta implements SCMetaTranslations<SCOrganization> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations.de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
      contactPoints: 'Kontaktinformationen',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations.en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
      contactPoints: 'contact details',
    },
  };
@@ -71,11 +68,11 @@ export class SCOrganizationMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldValueTranslations.de,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.de,
      type: 'Einrichtung',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldValueTranslations.en,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.en,
      type: SCThingType.Organization,
    },
  };
--- a/src/things/periodical.ts
+++ b/src/things/periodical.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -20,6 +20,13 @@ import {
  SCCreativeWorkWithoutReferences,
 } from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {
+  SCAcademicPriceGroup,
+  SCThingThatCanBeOffered,
+  SCThingThatCanBeOfferedMeta,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCThingThatCanBeOfferedWithoutReferences,
+} from './abstract/thing-that-can-be-offered';
 import {
  SCThingWithCategoriesSpecificValues,
  SCThingWithCategoriesTranslatableProperties,
@@ -37,7 +44,8 @@ export type SCPeriodicalCategories = 'journal' | 'electronic';
 */
 export interface SCPeriodicalWithoutReferences
  extends SCCreativeWorkWithoutReferences,
-  SCThingWithCategoriesWithoutReferences<SCPeriodicalCategories, SCThingWithCategoriesSpecificValues> {
+    SCThingThatCanBeOfferedWithoutReferences,
+    SCThingWithCategoriesWithoutReferences<SCPeriodicalCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Categories of a periodical
   */
@@ -68,7 +76,9 @@ export interface SCPeriodicalWithoutReferences
 * @indexable
 */
 export interface SCPeriodical
-  extends SCCreativeWork, SCPeriodicalWithoutReferences {
+  extends SCCreativeWork,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+    SCPeriodicalWithoutReferences {
  /**
   * Translated properties of a periodical
   */
@@ -84,8 +94,9 @@ export interface SCPeriodical
 * Translatable properties of a periodical
 */
 export interface SCPeriodicalTranslatableFields
-  extends SCThingWithCategoriesTranslatableProperties, SCCreativeWorkTranslatableProperties {
-}
+  extends SCThingWithCategoriesTranslatableProperties,
+    SCThingThatCanBeOfferedTranslatableProperties,
+    SCCreativeWorkTranslatableProperties {}

 /**
 * Meta information about a periodical
@@ -96,16 +107,22 @@ export class SCPeriodicalMeta extends SCThingMeta implements SCMetaTranslations<
   */
  fieldTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPeriodicalCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPeriodicalCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      categories: 'Format',
      ISSNs: 'ISSN',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPeriodicalCategories,
-      SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPeriodicalCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
      categories: 'format',
      ISSNs: 'ISSN',
    },
@@ -116,8 +133,12 @@ export class SCPeriodicalMeta extends SCThingMeta implements SCMetaTranslations<
   */
  fieldValueTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPeriodicalCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
      type: 'Periodikum',
      categories: {
        electronic: 'E-Journal',
@@ -125,8 +146,12 @@ export class SCPeriodicalMeta extends SCThingMeta implements SCMetaTranslations<
      },
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPeriodicalCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
      type: 'periodical',
      categories: {
        electronic: 'E-Journal',
--- a/src/things/person.ts
+++ b/src/things/person.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -24,8 +24,7 @@ import {SCRoomWithoutReferences} from './room';
 /**
 * A person without references
 */
-export interface SCPersonWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCPersonWithoutReferences extends SCThingWithoutReferences {
  /**
   * Additional first names of the person.
   *
@@ -45,7 +44,6 @@ export interface SCPersonWithoutReferences
   * The private email address of the person.
   *
   * @TJS-format email
-   *
   * @filterable
   * @keyword
   */
@@ -138,8 +136,7 @@ export interface SCPersonWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCPerson
-  extends SCPersonWithoutReferences, SCThing {
+export interface SCPerson extends SCPersonWithoutReferences, SCThing {
  /**
   * Organization the person works for
   */
@@ -148,9 +145,9 @@ export interface SCPerson
  /**
   * A list of homes of the person
   */
-  homeLocations?: Array<SCBuildingWithoutReferences
-    | SCPointOfInterestWithoutReferences
-    | SCRoomWithoutReferences>;
+  homeLocations?: Array<
+    SCBuildingWithoutReferences | SCPointOfInterestWithoutReferences | SCRoomWithoutReferences
+  >;

  /**
   * Type of a person
@@ -166,15 +163,13 @@ export interface SCPerson
 /**
 * Meta information about a person
 */
-export class SCPersonMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCPerson> {
+export class SCPersonMeta extends SCThingMeta implements SCMetaTranslations<SCPerson> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      additionalName: 'Zusatzname',
      affiliations: 'Zugehörigkeiten',
      birthDate: 'Geburtsdatum',
@@ -192,7 +187,7 @@ export class SCPersonMeta
      workLocations: 'Arbeitsstandorte',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      additionalName: 'additional name',
      affiliations: 'affiliations',
      birthDate: 'birth date',
@@ -217,17 +212,17 @@ export class SCPersonMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
      gender: {
-        'female': 'weiblich',
-        'inter': 'divers',
-        'male': 'männlich',
-        'undefined': 'undefiniert',
+        female: 'weiblich',
+        inter: 'divers',
+        male: 'männlich',
+        undefined: 'undefiniert',
      },
      type: 'Person',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
      type: SCThingType.Person,
    },
  };
@@ -236,8 +231,4 @@ export class SCPersonMeta
 /**
 * Gender of a person
 */
-export type SCPersonGender =
-  'male'
-  | 'female'
-  | 'inter'
-  | 'undefined';
+export type SCPersonGender = 'male' | 'female' | 'inter' | 'undefined';
--- a/src/things/point-of-interest.ts
+++ b/src/things/point-of-interest.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -28,7 +28,10 @@ import {
 * A point of interest without references
 */
 export interface SCPointOfInterestWithoutReferences
-  extends SCThingWithCategoriesWithoutReferences<SCPointOfInterestCategories, SCThingWithCategoriesSpecificValues>,
+  extends SCThingWithCategoriesWithoutReferences<
+      SCPointOfInterestCategories,
+      SCThingWithCategoriesSpecificValues
+    >,
    SCPlaceWithoutReferences {
  /**
   * Translated properties of a point of interest
@@ -48,7 +51,9 @@ export interface SCPointOfInterestWithoutReferences
 * @indexable
 */
 export interface SCPointOfInterest
-  extends SCPointOfInterestWithoutReferences, SCThingInPlace, SCPlace,
+  extends SCPointOfInterestWithoutReferences,
+    SCThingInPlace,
+    SCPlace,
    SCThingWithCategories<SCPointOfInterestCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Translated properties of a point of interest
@@ -65,7 +70,7 @@ export interface SCPointOfInterest
 * Categories of a point of interest
 */
 export type SCPointOfInterestCategories =
-  'computer'
+  | 'computer'
  | 'validator'
  | 'card charger'
  | 'printer'
@@ -74,26 +79,26 @@ export type SCPointOfInterestCategories =
 /**
 * Meta information about points of interest
 */
-export class SCPointOfInterestMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCPointOfInterest> {
+export class SCPointOfInterestMeta extends SCThingMeta implements SCMetaTranslations<SCPointOfInterest> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.de,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPointOfInterestCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.en,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPointOfInterestCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
    },
  };

@@ -102,9 +107,11 @@ export class SCPointOfInterestMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPointOfInterestCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.de,
      categories: {
        'card charger': 'Kartenaufwerter',
        'computer': 'Computer',
@@ -115,9 +122,11 @@ export class SCPointOfInterestMeta
      type: 'Sonderziel',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCPointOfInterestCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCPointOfInterestCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.en,
      type: SCThingType.PointOfInterest,
    },
  };
--- a/src/things/publication-event.ts
+++ b/src/things/publication-event.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 StApps
+ * Copyright (C) 2021-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -19,8 +19,7 @@ import {SCThingMeta, SCThingTranslatableProperties, SCThingType} from './abstrac
 /**
 * An publication event without references
 */
-export interface SCPublicationEventWithoutReferences
-  extends SCEventWithoutReferences {
+export interface SCPublicationEventWithoutReferences extends SCEventWithoutReferences {
  /**
   * All the locations related to the event (e.g. where a creative work was published)
   */
@@ -48,8 +47,7 @@ export interface SCPublicationEventWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCPublicationEvent
-  extends SCEvent, SCPublicationEventWithoutReferences {
+export interface SCPublicationEvent extends SCEvent, SCPublicationEventWithoutReferences {
  /**
   * Translated fields of an publication event
   */
@@ -64,26 +62,23 @@ export interface SCPublicationEvent
 /**
 * Translatable properties of an publication event
 */
-export interface SCPublicationEventTranslatableProperties extends SCThingTranslatableProperties {
-}
+export type SCPublicationEventTranslatableProperties = SCThingTranslatableProperties;

 /**
 * Meta information about publication events
 */
-export class SCPublicationEventMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCPublicationEvent> {
+export class SCPublicationEventMeta extends SCThingMeta implements SCMetaTranslations<SCPublicationEvent> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.de,
+      ...new SCEventMeta().fieldTranslations.de,
      locations: 'Erscheinungsorte',
      publisher: 'Verlag',
    },
    en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.en,
+      ...new SCEventMeta().fieldTranslations.en,
      locations: 'places of publication',
      publisher: 'publisher',
    },
@@ -94,11 +89,11 @@ export class SCPublicationEventMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.de,
+      ...new SCEventMeta().fieldValueTranslations.de,
      type: 'Veröffentlichung',
    },
    en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.en,
+      ...new SCEventMeta().fieldValueTranslations.en,
      type: 'publication event',
    },
  };
--- a/src/things/room.ts
+++ b/src/things/room.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -35,7 +35,7 @@ import {
 * Categories of a room
 */
 export type SCRoomCategories =
-  'cafe'
+  | 'cafe'
  | 'canteen'
  | 'computer'
  | 'education'
@@ -53,7 +53,8 @@ export type SCRoomCategories =
 * A room without references
 */
 export interface SCRoomWithoutReferences
-  extends SCPlaceWithoutReferences, SCThingThatAcceptsPaymentsWithoutReferences,
+  extends SCPlaceWithoutReferences,
+    SCThingThatAcceptsPaymentsWithoutReferences,
    SCThingWithCategoriesWithoutReferences<SCRoomCategories, SCRoomSpecificValues> {
  /**
   * The name of the floor in which the room is in.
@@ -88,7 +89,10 @@ export interface SCRoomWithoutReferences
 * @indexable
 */
 export interface SCRoom
-  extends SCRoomWithoutReferences, SCThingInPlace, SCThingThatAcceptsPayments, SCPlace,
+  extends SCRoomWithoutReferences,
+    SCThingInPlace,
+    SCThingThatAcceptsPayments,
+    SCPlace,
    SCThingWithCategories<SCRoomCategories, SCRoomSpecificValues> {
  /**
   * Translations of specific values of the object
@@ -106,8 +110,7 @@ export interface SCRoom
 /**
 * Category specific values of a room
 */
-export interface SCRoomSpecificValues
-  extends SCThingWithCategoriesSpecificValues {
+export interface SCRoomSpecificValues extends SCThingWithCategoriesSpecificValues {
  /**
   * Category specific opening hours of the room
   *
@@ -119,32 +122,26 @@ export interface SCRoomSpecificValues
 /**
 * Meta information about a place
 */
-export class SCRoomMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCRoom> {
+export class SCRoomMeta extends SCThingMeta implements SCMetaTranslations<SCRoom> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.de,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.de,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories, SCRoomSpecificValues>()
        .fieldTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
-        SCRoomSpecificValues>().fieldTranslations.de,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
      floorName: 'Etagenbezeichnung',
      inventory: 'Bestand',
    },
    en: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldTranslations.en,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldTranslations.en,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories, SCRoomSpecificValues>()
        .fieldTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
-        SCRoomSpecificValues>().fieldTranslations.en,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
      floorName: 'floor name',
      inventory: 'inventory',
    },
@@ -155,13 +152,11 @@ export class SCRoomMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.de,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
-        .fieldValueTranslations.de,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
-        SCRoomSpecificValues>().fieldValueTranslations.de,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.de,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories, SCRoomSpecificValues>()
        .fieldValueTranslations.de,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.de,
      categories: {
        'cafe': 'Café',
        'canteen': 'Kantine',
@@ -180,13 +175,11 @@ export class SCRoomMeta
      type: 'Raum',
    },
    en: {
-      ...SCPlaceWithoutReferencesMeta.getInstance<SCPlaceWithoutReferencesMeta>().fieldValueTranslations.en,
-      ...SCThingThatAcceptsPaymentsWithoutReferencesMeta.getInstance<SCThingThatAcceptsPaymentsWithoutReferencesMeta>()
-        .fieldValueTranslations.en,
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCRoomCategories,
-        SCRoomSpecificValues>().fieldValueTranslations.en,
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
+      ...new SCPlaceWithoutReferencesMeta().fieldValueTranslations.en,
+      ...new SCThingThatAcceptsPaymentsWithoutReferencesMeta().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<SCRoomCategories, SCRoomSpecificValues>()
        .fieldValueTranslations.en,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.en,
      type: SCThingType.Room,
    },
  };
--- a/src/things/semester.ts
+++ b/src/things/semester.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -23,8 +23,7 @@ import {SCThingMeta, SCThingType} from './abstract/thing';
 /**
 * A semester without references
 */
-export interface SCSemesterWithoutReferences
-  extends SCAcademicTermWithoutReferences {
+export interface SCSemesterWithoutReferences extends SCAcademicTermWithoutReferences {
  /**
   * The short name of the semester, using the given pattern.
   *
@@ -46,8 +45,7 @@ export interface SCSemesterWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCSemester
-  extends SCSemesterWithoutReferences, SCAcademicTerm {
+export interface SCSemester extends SCSemesterWithoutReferences, SCAcademicTerm {
  /**
   * Type of the semester
   */
@@ -57,15 +55,13 @@ export interface SCSemester
 /**
 * Meta information about a semester
 */
-export class SCSemesterMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCSemester> {
+export class SCSemesterMeta extends SCThingMeta implements SCMetaTranslations<SCSemester> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>().fieldTranslations.de,
+      ...new SCAcademicTermWithoutReferencesMeta().fieldTranslations.de,
      acronym: 'Abkürzung',
      endDate: 'Ende',
      eventsEndDate: 'Vorlesungsschluss',
@@ -73,7 +69,7 @@ export class SCSemesterMeta
      startDate: 'Beginn',
    },
    en: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>().fieldTranslations.en,
+      ...new SCAcademicTermWithoutReferencesMeta().fieldTranslations.en,
      acronym: 'acronym',
      endDate: 'end date',
      eventsEndDate: 'semester ending',
@@ -87,13 +83,11 @@ export class SCSemesterMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>()
-        .fieldValueTranslations.de,
+      ...new SCAcademicTermWithoutReferencesMeta().fieldValueTranslations.de,
      type: 'Semester',
    },
    en: {
-      ...SCAcademicTermWithoutReferencesMeta.getInstance<SCAcademicTermWithoutReferencesMeta>()
-        .fieldValueTranslations.en,
+      ...new SCAcademicTermWithoutReferencesMeta().fieldValueTranslations.en,
      type: SCThingType.Semester,
    },
  };
--- a/src/things/setting.ts
+++ b/src/things/setting.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -63,11 +63,7 @@ export interface SCSettingWithoutReferences
 /**
 * A list of categories for settings
 */
-export type SCSettingCategories =
-  'profile'
-  | 'privacy'
-  | 'credentials'
-  | 'others';
+export type SCSettingCategories = 'profile' | 'privacy' | 'credentials' | 'others';

 /**
 * The types of input/value a setting object can carry
@@ -86,7 +82,8 @@ export enum SCSettingInputType {
 * @validatable
 */
 export interface SCSetting
-  extends SCSettingWithoutReferences, SCThing,
+  extends SCSettingWithoutReferences,
+    SCThing,
    SCThingWithCategories<SCSettingCategories, SCThingWithCategoriesSpecificValues> {
  /**
   * Translated fields of a setting
@@ -129,8 +126,10 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCSettingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.de,
      defaultValue: 'Standard Wert',
      inputType: 'Eingabetyp',
      order: 'Position',
@@ -138,8 +137,10 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
      values: 'Werte',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCSettingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldTranslations.en,
      defaultValue: 'default value',
      inputType: 'input type',
      order: 'position',
@@ -153,8 +154,10 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCSettingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.de,
      categories: {
        credentials: 'Anmeldedaten',
        others: 'Andere',
@@ -163,16 +166,18 @@ export class SCSettingMeta extends SCThingMeta implements SCMetaTranslations<SCS
      },
      inputType: {
        'multiple choice': 'mehrfach Auswahl',
-        number: 'Zahl',
-        password: 'Passwort',
+        'number': 'Zahl',
+        'password': 'Passwort',
        'single choice': 'einfache Auswahl',
-        text: 'Text',
+        'text': 'Text',
      },
      type: 'Einstellung',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<SCSettingCategories,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<
+        SCSettingCategories,
+        SCThingWithCategoriesSpecificValues
+      >().fieldValueTranslations.en,
      type: SCThingType.Setting,
    },
  };
--- a/src/things/sport-course.ts
+++ b/src/things/sport-course.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -19,8 +19,7 @@ import {SCThingMeta, SCThingType} from './abstract/thing';
 /**
 * A sport course without references
 */
-export interface SCSportCourseWithoutReferences
-  extends SCEventWithoutReferences {
+export interface SCSportCourseWithoutReferences extends SCEventWithoutReferences {
  /**
   * Type of a sport course
   */
@@ -33,8 +32,7 @@ export interface SCSportCourseWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCSportCourse
-  extends SCEvent, SCSportCourseWithoutReferences {
+export interface SCSportCourse extends SCEvent, SCSportCourseWithoutReferences {
  /**
   * Type of a sport course
   */
@@ -44,18 +42,16 @@ export interface SCSportCourse
 /**
 * Meta information about a sport course
 */
-export class SCSportCourseMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCSportCourse> {
+export class SCSportCourseMeta extends SCThingMeta implements SCMetaTranslations<SCSportCourse> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.de,
+      ...new SCEventMeta().fieldTranslations.de,
    },
    en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldTranslations.en,
+      ...new SCEventMeta().fieldTranslations.en,
    },
  };

@@ -64,11 +60,11 @@ export class SCSportCourseMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.de,
+      ...new SCEventMeta().fieldValueTranslations.de,
      type: 'Sportkurs',
    },
    en: {
-      ...SCEventMeta.getInstance<SCEventMeta>().fieldValueTranslations.en,
+      ...new SCEventMeta().fieldValueTranslations.en,
      type: SCThingType.SportCourse,
    },
  };
--- a/src/things/study-module.ts
+++ b/src/things/study-module.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -29,9 +29,7 @@ import {SCPersonWithoutReferences} from './person';
 /**
 * A study module without references
 */
-export interface SCStudyModuleWithoutReferences
-  extends SCThingThatCanBeOfferedWithoutReferences {
-
+export interface SCStudyModuleWithoutReferences extends SCThingThatCanBeOfferedWithoutReferences {
  /**
   * ECTS points (European Credit Transfer System)
   *
@@ -75,7 +73,8 @@ export interface SCStudyModuleWithoutReferences
 * @indexable
 */
 export interface SCStudyModule
-  extends SCStudyModuleWithoutReferences, SCThingThatCanBeOffered<SCAcademicPriceGroup> {
+  extends SCStudyModuleWithoutReferences,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup> {
  /**
   * Academic events that make up a study module
   */
@@ -113,8 +112,7 @@ export interface SCStudyModule
  type: SCThingType.StudyModule;
 }

-export interface SCStudyModuleTranslatableProperties
-  extends SCThingThatCanBeOfferedTranslatableProperties {
+export interface SCStudyModuleTranslatableProperties extends SCThingThatCanBeOfferedTranslatableProperties {
  /**
   * Translations of the majors that this study module is meant for
   *
@@ -142,17 +140,14 @@ export enum SCStudyModuleNecessity {
 /**
 * Study module meta data
 */
-export class SCStudyModuleMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCStudyModule> {
+export class SCStudyModuleMeta extends SCThingMeta implements SCMetaTranslations<SCStudyModule> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance().fieldTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      academicEvents: 'Veranstaltungen',
      ects: 'ECTS-Punkte',
      faculty: 'Fachbereich',
@@ -164,9 +159,8 @@ export class SCStudyModuleMeta
      secretary: 'Sekretariat',
    },
    en: {
-      ...SCThingMeta.getInstance().fieldTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
      academicEvents: 'academic events',
      ects: 'ECTS points',
      faculty: 'faculty',
@@ -184,20 +178,18 @@ export class SCStudyModuleMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
      necessity: {
-        'elective': 'Wahlfach',
-        'optional': 'optional',
-        'required': 'benötigt',
+        elective: 'Wahlfach',
+        optional: 'optional',
+        required: 'benötigt',
      },
      type: 'Studiengangmodul',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
-      ...SCThingThatCanBeOfferedMeta.getInstance<SCAcademicPriceGroup>()
-        .fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
      type: SCThingType.StudyModule,
    },
  };
--- a/src/things/ticket.ts
+++ b/src/things/ticket.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -20,8 +20,7 @@ import {SCThingInPlace, SCThingInPlaceMeta} from './abstract/thing-in-place';
 /**
 * A ticket without references
 */
-export interface SCTicketWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCTicketWithoutReferences extends SCThingWithoutReferences {
  /**
   * Approximate wait time
   */
@@ -51,8 +50,7 @@ export interface SCTicketWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCTicket
-  extends SCTicketWithoutReferences, SCThingInPlace {
+export interface SCTicket extends SCTicketWithoutReferences, SCThingInPlace {
  /**
   * Type of a ticket
   */
@@ -62,23 +60,19 @@ export interface SCTicket
 /**
 * Meta information about a ticket
 */
-export class SCTicketMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCTicket> {
+export class SCTicketMeta extends SCThingMeta implements SCMetaTranslations<SCTicket> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .de,
+      ...new SCThingInPlaceMeta().fieldTranslations.de,
      approxWaitingTime: 'ungefähre Wartezeit',
      currentTicketNumber: 'aktuelle Ticketnummer',
      serviceType: 'Service Kategorie',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>().fieldTranslations
-        .en,
+      ...new SCThingInPlaceMeta().fieldTranslations.en,
      approxWaitingTime: 'approximate waiting time',
      currentTicketNumber: 'current ticket number',
      serviceType: 'type of service',
@@ -90,13 +84,11 @@ export class SCTicketMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
-        .fieldValueTranslations.de,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.de,
      type: 'Ticket',
    },
    en: {
-      ...SCThingInPlaceMeta.getInstance<SCThingInPlaceMeta>()
-        .fieldValueTranslations.en,
+      ...new SCThingInPlaceMeta().fieldValueTranslations.en,
      type: SCThingType.Ticket,
    },
  };
--- a/src/things/todo.ts
+++ b/src/things/todo.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -58,7 +58,9 @@ export interface SCToDoWithoutReferences
 * @indexable
 */
 export interface SCToDo
-  extends SCToDoWithoutReferences, SCThing, SCThingWithCategories<string, SCThingWithCategoriesSpecificValues> {
+  extends SCToDoWithoutReferences,
+    SCThing,
+    SCThingWithCategories<string, SCThingWithCategoriesSpecificValues> {
  /**
   * Translated fields of a thing with categories
   */
@@ -88,15 +90,15 @@ export class SCToDoMeta extends SCThingMeta implements SCMetaTranslations<SCToDo
   */
  fieldTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string, SCThingWithCategoriesSpecificValues>()
+        .fieldTranslations.de,
      done: 'Erledigt',
      dueDate: 'Fälligkeitsdatum',
      priority: 'Priorität',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
-        SCThingWithCategoriesSpecificValues>().fieldTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string, SCThingWithCategoriesSpecificValues>()
+        .fieldTranslations.en,
      done: 'done',
      dueDate: 'due date',
      priority: 'priority',
@@ -108,13 +110,13 @@ export class SCToDoMeta extends SCThingMeta implements SCMetaTranslations<SCToDo
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.de,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string, SCThingWithCategoriesSpecificValues>()
+        .fieldValueTranslations.de,
      type: 'ToDo',
    },
    en: {
-      ...SCThingWithCategoriesWithoutReferencesMeta.getInstance<string,
-        SCThingWithCategoriesSpecificValues>().fieldValueTranslations.en,
+      ...new SCThingWithCategoriesWithoutReferencesMeta<string, SCThingWithCategoriesSpecificValues>()
+        .fieldValueTranslations.en,
      type: SCThingType.ToDo,
    },
  };
--- a/src/things/tour.ts
+++ b/src/things/tour.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -18,8 +18,7 @@ import {SCThing, SCThingMeta, SCThingType, SCThingWithoutReferences} from './abs
 /**
 * A tour without references
 */
-export interface SCTourWithoutReferences
-  extends SCThingWithoutReferences {
+export interface SCTourWithoutReferences extends SCThingWithoutReferences {
  /**
   * Init script for the tour
   *
@@ -46,8 +45,7 @@ export interface SCTourWithoutReferences
 * @validatable
 * @indexable
 */
-export interface SCTour
-  extends SCTourWithoutReferences, SCThing {
+export interface SCTour extends SCTourWithoutReferences, SCThing {
  /**
   * Type of a tour
   */
@@ -57,20 +55,18 @@ export interface SCTour
 /**
 * Meta information about a tour
 */
-export class SCTourMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCTour> {
+export class SCTourMeta extends SCThingMeta implements SCMetaTranslations<SCTour> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      ...new SCThingMeta().fieldTranslations.de,
      init: 'Initiales Skript',
      steps: 'Schritte',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      ...new SCThingMeta().fieldTranslations.en,
      init: 'initial script',
      steps: 'steps',
    },
@@ -81,11 +77,11 @@ export class SCTourMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+      ...new SCThingMeta().fieldValueTranslations.de,
      type: 'Tour',
    },
    en: {
-      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+      ...new SCThingMeta().fieldValueTranslations.en,
      type: SCThingType.Tour,
    },
  };
@@ -94,10 +90,7 @@ export class SCTourMeta
 /**
 * A step in a tour
 */
-export type SCTourStep =
-  SCTourStepMenu
-  | SCTourStepLocation
-  | SCTourStepTooltip;
+export type SCTourStep = SCTourStepMenu | SCTourStepLocation | SCTourStepTooltip;

 /**
 * A location of a tour step
--- a/src/things/video.ts
+++ b/src/things/video.ts
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,17 +12,30 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-import {SCLanguage, SCMetaTranslations} from '../general/i18n';
+import {SCLanguage, SCMetaTranslations, SCTranslations} from '../general/i18n';
 import {SCISO8601Duration} from '../general/time';
-import {SCCreativeWork, SCCreativeWorkMeta, SCCreativeWorkWithoutReferences} from './abstract/creative-work';
+import {
+  SCCreativeWork,
+  SCCreativeWorkMeta,
+  SCCreativeWorkTranslatableProperties,
+  SCCreativeWorkWithoutReferences,
+} from './abstract/creative-work';
 import {SCThingMeta, SCThingType} from './abstract/thing';
+import {
+  SCAcademicPriceGroup,
+  SCThingThatCanBeOffered,
+  SCThingThatCanBeOfferedMeta,
+  SCThingThatCanBeOfferedTranslatableProperties,
+  SCThingThatCanBeOfferedWithoutReferences,
+} from './abstract/thing-that-can-be-offered';
 import {SCPersonWithoutReferences} from './person';

 /**
 * A video without references
 */
 export interface SCVideoWithoutReferences
-  extends SCCreativeWorkWithoutReferences {
+  extends SCCreativeWorkWithoutReferences,
+    SCThingThatCanBeOfferedWithoutReferences {
  /**
   * The Duration of the Video
   */
@@ -52,6 +65,11 @@ export interface SCVideoWithoutReferences
   */
  transcript?: string;

+  /**
+   * Translated fields of a video
+   */
+  translations?: SCTranslations<SCVideoTranslatableFields>;
+
  /**
   * Type of an Video
   */
@@ -123,31 +141,43 @@ export interface SCVideoTrack {
 * @indexable
 */
 export interface SCVideo
-  extends SCCreativeWork, SCVideoWithoutReferences {
+  extends SCCreativeWork,
+    SCThingThatCanBeOffered<SCAcademicPriceGroup>,
+    SCVideoWithoutReferences {
  /**
   * Persons acting in the Video
   */
  actors?: SCPersonWithoutReferences[];

+  /**
+   * Translated fields of a video
+   */
+  translations?: SCTranslations<SCVideoTranslatableFields>;
+
  /**
   * Type of a video
   */
  type: SCThingType.Video;
 }

+/**
+ * Translatable properties of a video
+ */
+export interface SCVideoTranslatableFields
+  extends SCCreativeWorkTranslatableProperties,
+    SCThingThatCanBeOfferedTranslatableProperties {}
+
 /**
 * Meta information about a video
 */
-export class SCVideoMeta
-  extends SCThingMeta
-  implements SCMetaTranslations<SCVideo> {
+export class SCVideoMeta extends SCThingMeta implements SCMetaTranslations<SCVideo> {
  /**
   * Translations of fields
   */
  fieldTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .de,
+      ...new SCCreativeWorkMeta().fieldTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.de,
      actors: 'Darsteller',
      duration: 'Dauer',
      sources: 'Quellen',
@@ -156,8 +186,8 @@ export class SCVideoMeta
      transcript: 'Transkript',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>().fieldTranslations
-        .en,
+      ...new SCCreativeWorkMeta().fieldTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldTranslations.en,
      actors: 'actors',
      duration: 'duration',
      sources: 'sources',
@@ -172,13 +202,13 @@ export class SCVideoMeta
   */
  fieldValueTranslations = {
    de: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.de,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.de,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.de,
      type: 'Video',
    },
    en: {
-      ...SCCreativeWorkMeta.getInstance<SCCreativeWorkMeta>()
-        .fieldValueTranslations.en,
+      ...new SCCreativeWorkMeta().fieldValueTranslations.en,
+      ...new SCThingThatCanBeOfferedMeta<SCAcademicPriceGroup>().fieldValueTranslations.en,
      type: SCThingType.Video,
    },
  };
@@ -188,7 +218,7 @@ export class SCVideoMeta
 * Video Encoding Formats
 */
 export type SCVideoMimeType =
-  'video/mp4'
+  | 'video/mp4'
  | 'video/ogg'
  | 'video/webm'
  | 'application/vnd.apple.mpegurl'
@@ -197,9 +227,4 @@ export type SCVideoMimeType =
 /**
 * Video Track Types
 */
-export type SCVideoTrackTypes =
-  'closed captions'
-  | 'chapters'
-  | 'description'
-  | 'metadata'
-  | 'subtitles';
+export type SCVideoTrackTypes = 'closed captions' | 'chapters' | 'description' | 'metadata' | 'subtitles';
--- a/src/translator.ts
+++ b/src/translator.ts
@@ -1,5 +1,6 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
 /*
- * Copyright (C) 2019 StApps
+ * Copyright (C) 2019-2022 Open StApps
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation, version 3.
@@ -12,22 +13,21 @@
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 */
-import clone = require('fast-clone');
 import equal = require('fast-deep-equal/es6');
+import clone = require('rfdc');
 import {Defined, TSOCType} from 'ts-optchain';
 import {SCLanguageCode} from './general/i18n';
 import {isThing} from './guards';
 import {SCClasses} from './meta';
 import {SCThing, SCThingType} from './things/abstract/thing';

-// tslint:disable:no-any
+// eslint disable @typescript-eslint/no-explicit-any
 const standardCacheSize = 200;

 /**
 * SCThingTranslator class
 */
 export class SCThingTranslator {
-
  /**
   * Getter for language property
   */
@@ -77,6 +77,13 @@ export class SCThingTranslator {
    this.sourceCache = new LRUCache(cacheCapacity);
    this._language = language;
    this.metaClasses = SCClasses;
+
+    // Initalize all meta classes once
+    if (typeof (this.metaClasses as any)[Object.keys(this.metaClasses)[0]] === 'function') {
+      for (const metaClass of Object.keys(this.metaClasses)) {
+        (this.metaClasses as any)[metaClass] = new (SCClasses as any)[metaClass]();
+      }
+    }
  }

  /**
@@ -85,15 +92,14 @@ export class SCThingTranslator {
   * @param data The intermediate object / primitive returned by the Proxys get() method
   * @returns an TSOCType<T> object allowing for access to translations or a translated value(s)
   */
-  // tslint:disable-next-line:prefer-function-over-method
  private deeptranslate<T>(data?: T): TSOCType<T> {
    const proxy = new Proxy(
-      ((defaultValue?: Defined<T>) => (data == null ? defaultValue : data)) as TSOCType<T>,
+      ((defaultValue?: Defined<T>) => (data == undefined ? defaultValue : data)) as TSOCType<T>,
      {
        get: (target, key) => {
-          const obj: any = target();
+          const object: any = target();

-          return this.deeptranslate(obj[key]);
+          return this.deeptranslate(object[key]);
        },
      },
    );
@@ -108,8 +114,7 @@ export class SCThingTranslator {
   * @param language The language the thing property values are translated to
   * @returns The thing with all known meta values translated
   */
-  private getAllMetaFieldTranslations(thingType: SCThingType,
-                                      language: SCLanguageCode): object | undefined {
+  private getAllMetaFieldTranslations(thingType: SCThingType, language: SCLanguageCode): object | undefined {
    const fieldTranslations = {};
    const metaClass = this.getMetaClassInstance(thingType);
    if (typeof metaClass === 'undefined') {
@@ -118,18 +123,16 @@ export class SCThingTranslator {

    // Assigns every property in fieldTranslations to the known base language translation
    if (typeof metaClass.fieldTranslations.en !== 'undefined') {
-      Object.keys(metaClass.fieldTranslations.en)
-        .forEach((key) => {
-          (fieldTranslations as any)[key] = metaClass.fieldTranslations.en[key];
-        });
+      for (const key of Object.keys(metaClass.fieldTranslations.en)) {
+        (fieldTranslations as any)[key] = metaClass.fieldTranslations.en[key];
+      }
    }

    // Assigns every property in fieldTranslations to the known translation in given language
    if (typeof metaClass.fieldTranslations[language] !== 'undefined') {
-      Object.keys(metaClass.fieldTranslations[language])
-        .forEach((key) => {
-          (fieldTranslations as any)[key] = metaClass.fieldTranslations[language][key];
-        });
+      for (const key of Object.keys(metaClass.fieldTranslations[language])) {
+        (fieldTranslations as any)[key] = metaClass.fieldTranslations[language][key];
+      }
    }

    return fieldTranslations;
@@ -143,7 +146,7 @@ export class SCThingTranslator {
   */
  private getMetaClassInstance(thingType: SCThingType): any {
    if (thingType in this.metaClasses) {
-      return new (this.metaClasses as any)[thingType]();
+      return this.metaClasses[thingType];
    }

    return undefined;
@@ -157,32 +160,33 @@ export class SCThingTranslator {
   * @param language The language the thing / object is translated to
   * @returns The thing with translated meta field values
   */
-  private replaceAvailableMetaFieldValueTranslations(instance: any,
-                                                     language: SCLanguageCode): any {
+  private replaceAvailableMetaFieldValueTranslations(instance: any, language: SCLanguageCode): any {
    const metaClass = this.getMetaClassInstance(instance.type);
    if (typeof metaClass === 'undefined') {
      return instance;
    }
    if (typeof metaClass.fieldValueTranslations[language] !== 'undefined') {
-      Object.keys(metaClass.fieldValueTranslations[language])
-        .forEach((key) => {
-          if (metaClass.fieldValueTranslations[language][key] instanceof Object
-          && (instance as any)[key] instanceof Object) {
-            // Assigns known translations of subproperties to property in given language (e.g. categories)
-            Object.keys((instance as any)[key])
-              .forEach((subKey) => {
-                (instance as any)[key][subKey] =
-                  metaClass.fieldValueTranslations[language][key][(instance as any)[key][subKey]];
-              });
-          } else if (metaClass.fieldValueTranslations[language][key] instanceof Object
-            && typeof (instance as any)[key] === 'string') {
-            // Assigns known translations of enum to property in given language (e.g. SCSettingInputType)
-            (instance as any)[key] = metaClass.fieldValueTranslations[language][key][(instance as any)[key]];
-          } else {
-            // Assigns property to known translation of fieldValueTranslations in given language
-            (instance as any)[key] = metaClass.fieldValueTranslations[language][key];
+      for (const key of Object.keys(metaClass.fieldValueTranslations[language])) {
+        if (
+          metaClass.fieldValueTranslations[language][key] instanceof Object &&
+          (instance as any)[key] instanceof Object
+        ) {
+          // Assigns known translations of subproperties to property in given language (e.g. categories)
+          for (const subKey of Object.keys((instance as any)[key])) {
+            (instance as any)[key][subKey] =
+              metaClass.fieldValueTranslations[language][key][(instance as any)[key][subKey]];
          }
-        });
+        } else if (
+          metaClass.fieldValueTranslations[language][key] instanceof Object &&
+          typeof (instance as any)[key] === 'string'
+        ) {
+          // Assigns known translations of enum to property in given language (e.g. SCSettingInputType)
+          (instance as any)[key] = metaClass.fieldValueTranslations[language][key][(instance as any)[key]];
+        } else {
+          // Assigns property to known translation of fieldValueTranslations in given language
+          (instance as any)[key] = metaClass.fieldValueTranslations[language][key];
+        }
+      }
    }

    return instance;
@@ -200,15 +204,15 @@ export class SCThingTranslator {

    let nextInstance = instance as any;
    // Recursively call this function on all nested SCThings, arrays and objects
-    Object.keys(nextInstance)
-      .forEach((key) => {
-        if (
-          isThing(nextInstance[key]) ||
-          nextInstance[key] instanceof Array ||
-          nextInstance[key] instanceof Object) {
-            nextInstance[key] = this.translateThingInPlaceDestructively(nextInstance[key]);
-        }
-      });
+    for (const key of Object.keys(nextInstance)) {
+      if (
+        isThing(nextInstance[key]) ||
+        Array.isArray(nextInstance[key]) ||
+        nextInstance[key] instanceof Object
+      ) {
+        nextInstance[key] = this.translateThingInPlaceDestructively(nextInstance[key]);
+      }
+    }

    // Spread variable translations given by the connector into thing
    if (typeof nextInstance.translations?.[targetLanguage] !== 'undefined') {
@@ -224,7 +228,7 @@ export class SCThingTranslator {
   * Recursively translates the given object in-place
   * Translated values overwrite current values (destructive)
   *
-   * @param instance The thing / object that will be translated
+   * @param thing The thing / object that will be translated
   * @returns The thing translated
   */
  public translate<T extends SCThing>(thing: T): T {
@@ -234,7 +238,7 @@ export class SCThingTranslator {
        return cachedInstance as T;
      }
    }
-    const translatedInstance = this.translateThingInPlaceDestructively(clone(thing));
+    const translatedInstance = this.translateThingInPlaceDestructively(clone()(thing));
    delete translatedInstance.translations;
    this.cache.putObject(translatedInstance);
    this.sourceCache.putObject(thing);
@@ -244,6 +248,7 @@ export class SCThingTranslator {

  /**
   * Get field value translation recursively
+   *
   * @example
   * const dish: SCDish = {...};
   * translator.translate(dish).offers[0].inPlace.categories[1]());
@@ -257,21 +262,21 @@ export class SCThingTranslator {
   */
  public translatedAccess<T extends SCThing>(thing: T): TSOCType<T> {
    return new Proxy(
-      ((defaultValue?: Defined<T>) => (thing == null ? defaultValue : thing)) as TSOCType<T>,
+      ((defaultValue?: Defined<T>) => (thing == undefined ? defaultValue : thing)) as TSOCType<T>,
      {
        get: (target, key) => {
-          const obj: any = target();
+          const object: any = target();
          if (equal(this.sourceCache.get(thing), thing)) {
-            const objTranslatedFromCache = this.cache.get(thing);
-            if (typeof objTranslatedFromCache !== 'undefined') {
-              return this.deeptranslate((objTranslatedFromCache as any)[key]);
+            const objectTranslatedFromCache = this.cache.get(thing);
+            if (typeof objectTranslatedFromCache !== 'undefined') {
+              return this.deeptranslate((objectTranslatedFromCache as any)[key]);
            }
          }
-          const objTranslated = this.translateThingInPlaceDestructively(clone(obj));
-          this.cache.putObject(objTranslated);
+          const objectTranslated = this.translateThingInPlaceDestructively(clone()(object));
+          this.cache.putObject(objectTranslated);
          this.sourceCache.putObject(thing);

-          return this.deeptranslate(objTranslated[key]);
+          return this.deeptranslate(objectTranslated[key]);
        },
      },
    );
@@ -280,6 +285,7 @@ export class SCThingTranslator {
  /**
   * Given a SCThingType this function returns an object with the same basic structure as the corresponding SCThing
   * All the values will be set to the known translations of the property/key name
+   *
   * @example
   * const translatedMetaDish = translator.translatedPropertyNames<SCCourseOfStudy>(SCThingType.CourseOfStudy);
   * @param type The type whose property names will be translated
@@ -292,6 +298,7 @@ export class SCThingTranslator {
  /**
   * Given a SCThingType and a corresponding property name it returns the known property value translation
   * Access pattern to the meta object containing the translation can be thought of as type.field[key] with key being optional
+   *
   * @example
   * const singleValueTranslation = translator.translatedPropertyValue(SCThingType.Dish, 'categories', 'main dish');
   * @param type The type for whose property values a translation is required
@@ -299,11 +306,10 @@ export class SCThingTranslator {
   * @param key If specified tries to access the field with this key
   * @returns Known translation for the property
   */
-  public translatedPropertyValue(type: SCThingType,
-                                 field: string,
-                                 key?: string): string | undefined {
-    const fieldValueTranslations = this.getMetaClassInstance(type).fieldValueTranslations[this.language] ??
-                                   this.getMetaClassInstance(type).fieldValueTranslations.en;
+  public translatedPropertyValue(type: SCThingType, field: string, key?: string): string | undefined {
+    const fieldValueTranslations =
+      this.getMetaClassInstance(type).fieldValueTranslations[this.language] ??
+      this.getMetaClassInstance(type).fieldValueTranslations.en;
    const fieldTranslation = fieldValueTranslations?.[field];

    return fieldTranslation?.[key ?? ''] ?? key ?? fieldTranslation;
@@ -386,8 +392,7 @@ class LRUCache<T> {
  public put(key: string, content: T) {
    if (this.entries.size >= this.maxEntries) {
      // LRU behavior
-      const keyToDelete = this.entries.keys()
-        .next().value;
+      const keyToDelete = this.entries.keys().next().value;
      this.entries.delete(keyToDelete);
    }
    this.entries.set(key, content);
@@ -399,6 +404,6 @@ class LRUCache<T> {
   * @param something The object that should be cached under something.uid
   */
  public putObject<U extends SCThing>(something: U) {
-    this.put(something.uid, (something as any) as T);
+    this.put(something.uid, something as any as T);
  }
 }
--- a/test/features.spec.ts
+++ b/test/features.spec.ts
@@ -47,7 +47,6 @@ describe('Features', () => {
      referenceName: 'SCDiff',
    });

-    // tslint:disable-next-line:no-unused-expression
    expect(thingsReflection.type?.specificationTypes?.every(it => typeof it.referenceName !== 'undefined')).to.be.true;
    thingNames = thingsReflection.type?.specificationTypes?.map(type => type.referenceName!) ?? [];
    things = thingNames
--- a/test/resources/indexable/Assessment.1.json
+++ b/test/resources/indexable/Assessment.1.json
--- a/test/resources/indexable/Assessment.2.json
+++ b/test/resources/indexable/Assessment.2.json
--- a/test/resources/indexable/Article.3.json
+++ b/test/resources/indexable/Article.3.json
@@ -16,13 +16,13 @@
      }
    ],
    "firstPublished": "2008",
-    "sameAs": "https://hds2test.hebis.de/ubffm/Record/HEB198305427",
+    "sameAs": "https://ubffm.hds.hebis.de/Record/HEB198305427",
    "origin": {
      "indexed": "2018-09-11T12:30:00Z",
      "name": "HeBIS HDS",
      "originalId": "HEB198305427",
      "type": "remote",
-      "url": "https://hds2.hebis.de/ubffm/"
+      "url": "https://ubffm.hds.hebis.de"
    },
    "isPartOf": {
      "uid": "bc5e5399-a24c-5c01-9c1b-0c8b83272087",
--- a/test/resources/indexable/Article.4.json
+++ b/test/resources/indexable/Article.4.json
@@ -16,13 +16,13 @@
      }
    ],
    "firstPublished": "2002",
-    "sameAs": "https://hds2test.hebis.de/ubffm/Record/HEB107025590",
+    "sameAs": "https://ubffm.hds.hebis.de/Record/HEB107025590",
    "origin": {
      "indexed": "2018-09-11T12:30:00Z",
      "name": "HeBIS HDS",
      "originalId": "HEB107025590",
      "type": "remote",
-      "url": "https://hds2.hebis.de/ubffm/"
+      "url": "https://ubffm.hds.hebis.de"
    },
    "isPartOf": {
      "uid": "f84c1851-042e-542f-ba7a-158b32dfb82f",
--- a/test/resources/indexable/Book.3.json
+++ b/test/resources/indexable/Book.3.json
@@ -16,6 +16,7 @@
      }
    ],
    "firstPublished": "[ca. 1991]",
+    "lastPublished": "2000 Q1",
    "publications": [
      {
        "uid": "603a6574-8910-588a-9e83-cd26e6988c74",
@@ -27,13 +28,13 @@
        "name": "VDI"
      }
    ],
-    "sameAs": "https://hds2test.hebis.de/ubffm/Record/HEB022992618",
+    "sameAs": "https://ubffm.hds.hebis.de/Record/HEB022992618",
    "origin": {
      "indexed": "2018-09-11T12:30:00Z",
      "name": "HeBIS HDS",
      "originalId": "HEB022992618",
      "type": "remote",
-      "url": "https://hds2.hebis.de/ubffm/"
+      "url": "https://ubffm.hds.hebis.de"
    }
  },
  "schema": "SCBook"
--- a/test/resources/indexable/Book.4.json
+++ b/test/resources/indexable/Book.4.json
@@ -27,7 +27,7 @@
        "name": "Belles Lettres"
      }
    ],
-    "sameAs": "https://hds2test.hebis.de/ubffm/Record/HEB102248788",
+    "sameAs": "https://ubffm.hds.hebis.de/Record/HEB102248788",
    "ISBNs": [
      "2251760385"
    ],
@@ -36,7 +36,7 @@
      "name": "HeBIS HDS",
      "originalId": "HEB102248788",
      "type": "remote",
-      "url": "https://hds2.hebis.de/ubffm/"
+      "url": "https://ubffm.hds.hebis.de"
    }
  },
  "schema": "SCBook"
--- a/test/resources/indexable/Message.3.json
+++ b/test/resources/indexable/Message.3.json
@@ -5,13 +5,16 @@
  "instance": {
    "type": "message",
    "invalid-non-existing-key-in-schema": 1,
-    "uid": "4706ef24-b631-5c20-91d1-3c627decca5a",
+    "uid": "4706ef24-b631-5c20-91d1-3c627deccf5a",
    "image": "https://backend/res/img/message_small.png",
    "name": "Lösung für das Problem des Zurücksetzens der StApps-App gefunden",
    "messageBody": "Wie bereits berichtet, klagten User über das Löschen ihres Stundenplans beim Update von Version 0.8.0 auf 0.8.1. Wir haben eine Lösung für das Problem gefunden und testen diese ausführlich bis zum Ende dieser Woche. Wenn alles glatt verläuft, dann kommt am Wochenende die fehlerbereinige Version 0.8.2 heraus.\n\n*(25.Okt 2016)*",
    "audiences": [
      "students"
    ],
+    "categories": [
+      "news"
+    ],
    "audienceOrganizations": [{
      "name": "TU Berlin",
      "type": "organization",
--- a/test/resources/indexable/Message.4.json
+++ b/test/resources/indexable/Message.4.json
@@ -0,0 +1,28 @@
+{
+  "errorNames": [
+    "required"
+  ],
+  "instance": {
+    "type": "message",
+    "invalid-non-existing-key-in-schema": 1,
+    "uid": "4706ef24-b631-5c20-91d1-3c627deccfff",
+    "image": "https://backend/res/img/message_small.png",
+    "name": "Lösung für das Problem des Zurücksetzens der StApps-App gefunden",
+    "messageBody": "Wie bereits berichtet, klagten User über das Löschen ihres Stundenplans beim Update von Version 0.8.0 auf 0.8.1. Wir haben eine Lösung für das Problem gefunden und testen diese ausführlich bis zum Ende dieser Woche. Wenn alles glatt verläuft, dann kommt am Wochenende die fehlerbereinige Version 0.8.2 heraus.\n\n*(25.Okt 2016)*",
+    "audiences": [
+      "students"
+    ],
+    "audienceOrganizations": [{
+      "name": "TU Berlin",
+      "type": "organization",
+      "uid": "4806ef14-b631-5c20-91d1-3c627decca5a"
+    }],
+    "sequenceIndex": 1005,
+    "origin": {
+      "indexed": "2018-09-11T12:30:00Z",
+      "name": "Dummy",
+      "type": "remote"
+    }
+  },
+  "schema": "SCMessage"
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Rainer Killinger	62ab6384d3	0.69.0	2022-08-17 16:16:47 +02:00
Rainer Killinger	f864c64efa	refactor: move to eslint	2022-08-17 16:09:45 +02:00
Rainer Killinger	c1dc7b4e8f	ci: add cobertura coverage report	2022-08-17 14:04:50 +02:00
Rainer Killinger	a096d5be62	docs: update contributors list	2022-08-17 14:04:12 +02:00
openstappsbot	ed6358a0c8	refactor: update all	2022-08-17 14:00:49 +02:00
Rainer Killinger	7f22cbb54c	docs: update changelog	2022-06-27 16:04:10 +02:00
Rainer Killinger	8b9bb45868	0.68.0	2022-06-27 16:04:08 +02:00
openstappsbot	77f1f0a5b8	refactor: update all	2022-06-27 15:56:36 +02:00
Rainer Killinger	1015fd24ac	docs: update changelog	2022-05-31 16:13:54 +02:00
Rainer Killinger	618a9046bc	0.67.0	2022-05-31 16:13:51 +02:00
Rainer Killinger	c43e2b38e6	refactor: remove SCMetaTranslations singletons	2022-05-31 16:10:41 +02:00
Rainer Killinger	9d0ff36af5	refactor: untangle SCCreativeWork inheritance	2022-05-30 17:00:14 +02:00
Rainer Killinger	31bb7e89ea	docs: update changelog	2022-05-27 16:54:09 +02:00
Rainer Killinger	942f04e250	0.66.1	2022-05-27 16:54:06 +02:00
Rainer Killinger	930b574618	refactor: update dependencies	2022-05-27 16:51:08 +02:00
Rainer Killinger	7b88be3a75	refactor: initalize meta classes in translator	2022-05-27 15:21:59 +02:00
Jovan Krunić	5277f7601c	docs: update changelog	2022-05-11 13:54:54 +02:00
Jovan Krunić	5241a01b55	0.66.0	2022-05-11 13:54:52 +02:00
Thea Schöbl	484be6a890	feat: add geo filter envelope support	2022-04-28 09:50:44 +02:00
Rainer Killinger	45e0f26391	docs: update changelog	2022-04-04 20:56:06 +02:00
Rainer Killinger	ead47aca19	0.65.1	2022-04-04 20:56:04 +02:00
Rainer Killinger	f9c2414000	docs: adjust typedoc option 'entryPointStrategy'	2022-04-04 20:55:16 +02:00
Rainer Killinger	523de51160	docs: update changelog	2022-04-04 20:47:21 +02:00
Rainer Killinger	d912c03eb0	0.65.0	2022-04-04 20:47:19 +02:00
Rainer Killinger	a638f5447b	refactor: update dependencies	2022-04-04 20:42:01 +02:00
Rainer Killinger	cecf95aa46	docs: update changelog	2022-03-21 11:05:27 +01:00
Rainer Killinger	6fd8c5adf3	0.64.0	2022-03-21 11:05:25 +01:00
Rainer Killinger	db24b41d99	test: adjust HDS samples to production version	2022-03-21 11:00:11 +01:00
Rainer Killinger	b1fcd22ab2	refactor: update dependencies	2022-03-17 12:44:59 +01:00
Rainer Killinger	268588fb6f	docs: update changelog	2022-01-24 14:47:04 +01:00
Rainer Killinger	d3048a12d8	0.63.0	2022-01-24 14:47:02 +01:00
Rainer Killinger	e14993114f	fix: add auth object to index route	2022-01-24 14:45:17 +01:00
Rainer Killinger	4237f6ad60	docs: update changelog	2022-01-21 17:15:16 +01:00
Rainer Killinger	e7c1000bc4	0.62.0	2022-01-21 17:15:14 +01:00
Rainer Killinger	e0adb2332e	fix: add missing lastPublished to SCCreativeWork	2022-01-21 17:14:16 +01:00
Rainer Killinger	e5696b23e7	docs: update changelog	2022-01-21 15:07:16 +01:00
Rainer Killinger	659d0974f7	0.61.0	2022-01-21 15:07:14 +01:00
Rainer Killinger	e8304eeeb4	refactor: remove unused auth provider properties	2022-01-21 15:06:11 +01:00
Rainer Killinger	dca9d26c66	docs: update changelog	2022-01-21 12:29:55 +01:00
Rainer Killinger	852e0f5373	0.60.0	2022-01-21 12:29:52 +01:00
Rainer Killinger	26dd531d24	refactor: split up SCUserConfiguration type	2022-01-21 12:22:13 +01:00
Rainer Killinger	52bdf93356	docs: update changelog	2022-01-20 14:20:17 +01:00
Rainer Killinger	7509610145	0.59.0	2022-01-20 14:20:15 +01:00
Rainer Killinger	972cdf392d	refactor: make config auth provides be optional	2022-01-20 14:18:50 +01:00
Rainer Killinger	4f758f7d0c	docs: update changelog	2022-01-18 15:13:06 +01:00
Rainer Killinger	980e899807	0.58.0	2022-01-18 15:13:04 +01:00
Rainer Killinger	d1c5bb9595	refactor: use SCMap for feature configurations	2022-01-18 15:12:05 +01:00
Rainer Killinger	dc9c0f528f	docs: update changelog	2022-01-18 11:06:18 +01:00
Rainer Killinger	66d64e0858	0.57.0	2022-01-18 11:06:16 +01:00
Rainer Killinger	06339786c2	refactor: update dependencies	2022-01-18 11:01:01 +01:00
Rainer Killinger	8ed68481fa	refactor: rename urlFragment in routes	2022-01-18 09:50:46 +01:00
Rainer Killinger	e26042957c	refactor: remodel features in app config	2022-01-18 09:50:44 +01:00
Rainer Killinger	7553620a5d	feat: extend config to describe auth providers	2022-01-18 09:50:00 +01:00
Rainer Killinger	322c001e70	docs: update changelog	2021-12-17 10:35:53 +01:00
Rainer Killinger	830e249ac4	0.56.0	2021-12-17 10:35:50 +01:00
Rainer Killinger	8c9df3ea9a	test: adjust testing resources	2021-12-17 10:34:03 +01:00
Rainer Killinger	f85768d32e	refactor: update dependencies	2021-12-17 10:33:20 +01:00
Rainer Killinger	580ace368f	docs: update changelog	2021-12-15 13:15:12 +01:00
Rainer Killinger	522be6643a	0.55.0	2021-12-15 13:15:10 +01:00
Rainer Killinger	8784309ddb	refactor: update dependencies	2021-12-15 13:03:57 +01:00
Rainer Killinger	3d8f996690	refactor: make offer price property optional	2021-11-30 12:27:40 +01:00
Rainer Killinger	36a4bfcbbc	docs: update changelog	2021-11-17 11:38:00 +01:00