feat: migrate backend to cosmiconfig

packages/core-tools/src/validate.ts

@@ -36,13 +36,14 @@ export class Validator {
    */
   private readonly ajv = new Ajv.default({
     verbose: true,
+    allowUnionTypes: true,
     code: {regExp: re2 as never},
   });
 
   /**
    * Map of schema names to schemas
    */
-  private readonly schemas: { [type: string]: Schema } = {};
+  private readonly schemas: {[type: string]: Schema} = {};
 
   /**
    * A wrapper function for Ajv that transforms the error into the compatible old error
@@ -94,7 +95,7 @@ export class Validator {
     if (schema === undefined) {
       if (isThingWithType(instance)) {
         // schema name can be inferred from type string
-        const schemaSuffix = (instance as { type: string }).type
+        const schemaSuffix = (instance as {type: string}).type
           .split(' ')
           .map((part: string) => {
             return part.slice(0, 1).toUpperCase() + part.slice(1);
@@ -178,7 +179,10 @@ export async function validateFiles(
   await v.addSchemas(schemaDirectory);
 
   // get a list of files to test
-  const testFiles = await glob(path.posix.join(resourcesDirectory.replaceAll(path.sep, path.posix.sep), '*.json'), {absolute: true});
+  const testFiles = await glob(
+    path.posix.join(resourcesDirectory.replaceAll(path.sep, path.posix.sep), '*.json'),
+    {absolute: true},
+  );
 
   if (testFiles.length === 0) {
     throw new Error(`No test files in ${resourcesDirectory}!`);