Merge pull request #1162 from serlo/jsconfig-esm

test: Some simplifications for the jest config

jest.config-pacts-serlo-org-database-layer.cjs

@@ -1,29 +1,11 @@
-/* eslint-disable @typescript-eslint/no-var-requires,import/no-commonjs */
-// eslint-disable-next-line import/no-extraneous-dependencies
-const { pathsToModuleNameMapper } = require('ts-jest')
-
-// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment,import/extensions
-const { compilerOptions } = require('./tsconfig.json')
+// eslint-disable-next-line import/no-commonjs
+const defaultConfig = require('./jest.config.cjs')
 
 module.exports = {
-  modulePaths: ['<rootDir>/packages'],
-  // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
-  moduleNameMapper: {
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access,@typescript-eslint/no-unsafe-argument
-    ...pathsToModuleNameMapper(compilerOptions.paths),
-    '@serlo/api': '@serlo/api/src',
-    '@serlo/authorization': '@serlo/authorization/src',
-  },
-  setupFiles: ['dotenv/config'],
+  ...defaultConfig,
   setupFilesAfterEnv: [
     '<rootDir>/__config__/jest.setup-pacts-serlo-org-database-layer.ts',
   ],
-  testEnvironment: 'node',
   testRegex: '/__tests-pacts__/index\\.ts',
-  transform: {
-    '^.+\\.tsx?$': ['ts-jest', { useESM: true, isolatedModules: true }],
-    '^.+\\.graphql$': './transform-graphql-jest-28-shim.cjs',
-  },
-  extensionsToTreatAsEsm: ['.ts', '.tsx', '.mts'],
   watchPathIgnorePatterns: ['<rootDir>/pacts/'],
 }

jest.config.cjs

@@ -1,15 +1,7 @@
-/* eslint-disable @typescript-eslint/no-var-requires,import/no-commonjs */
-const { pathsToModuleNameMapper } = require('ts-jest')
-
-// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment,import/extensions
-const { compilerOptions } = require('./tsconfig.json')
-
 module.exports = {
   modulePaths: ['<rootDir>/packages'],
-  // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
   moduleNameMapper: {
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access,@typescript-eslint/no-unsafe-argument
-    ...pathsToModuleNameMapper(compilerOptions.paths),
+    '^~/(.*)$': 'server/src/$1',
     '@serlo/api': '@serlo/api/src',
     '@serlo/authorization': '@serlo/authorization/src',
   },