refactor: move logger to monorepo

packages/logger/src/transformations/add-log-level.ts

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 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 {LogLevel} from '../logger';
+import {Transformation} from '../transformation';
+
+/**
+ * Transformation that adds the log level to output
+ */
+export class AddLogLevel implements Transformation {
+  /**
+   * Keep this transformation in production environments
+   */
+  useInProduction = true;
+
+  /**
+   * Add log level to output
+   *
+   * @param logLevel Log level to add to output
+   * @param output Output to colorize
+   */
+  // tslint:disable-next-line:prefer-function-over-method
+  transform(logLevel: LogLevel, output: string): string {
+    return `[${logLevel}] ${output}`;
+  }
+}

packages/logger/src/transformations/colorize.ts

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2019-2020 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 chalk from 'chalk';
+import {LogLevel} from '../logger';
+import {Transformation} from '../transformation';
+
+/**
+ * Transformation that colorizes log output
+ */
+export class Colorize implements Transformation {
+  /**
+   * Skip this transformation in production environments
+   */
+  useInProduction = false;
+
+  /**
+   * Instantiate a new colorize transformation
+   *
+   * @param logLevelToColor Map from log level to color transformation to apply
+   */
+  constructor(
+    private readonly logLevelToColor: {[k in LogLevel]: chalk.Chalk} = {
+      ERROR: chalk.bold.red,
+      INFO: chalk.cyan,
+      LOG: chalk.white,
+      OK: chalk.bold.green,
+      WARN: chalk.yellow,
+    },
+  ) {
+    // noop
+  }
+
+  /**
+   * Colorize log output
+   *
+   * @param logLevel Log level to choose color for
+   * @param output Output to colorize
+   */
+  transform(logLevel: LogLevel, output: string): string {
+    return this.logLevelToColor[logLevel](output);
+  }
+}

packages/logger/src/transformations/timestamp.ts

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 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 {LogLevel} from '../logger';
+import {Transformation} from '../transformation';
+
+/**
+ * Transformation that adds a timestamp to output
+ */
+export class Timestamp implements Transformation {
+  /**
+   * Keep this transformation in production environments
+   */
+  useInProduction = true;
+
+  /**
+   * Add timestamp to output
+   *
+   * @param _logLevel Log level to add timestamp to output for
+   * @param output Output to add timestamp to
+   */
+  transform(_logLevel: LogLevel, output: string): string {
+    return `[${new Date().toISOString()}] ${output}`;
+  }
+}