jest.config.js

module.exports = {
    rootDir: '.',
    setupFilesAfterEnv: ['<rootDir>/src/setup-jest.ts'],
    globals: {
      'ts-jest': {
        tsConfig: 'tsconfig.spec.json',
        stringifyContentPathRegex: '\\.html?$',
        astTransformers: [
          require.resolve('jest-preset-angular/InlineHtmlStripStylesTransformer'),
        ],
      },
    },
    transform: {
      '^.+\\.(ts|js|html)$': 'ts-jest',
    },
    testMatch: ['<rootDir>/**/*.spec.ts'],
    testEnvironment: 'jest-environment-jsdom-thirteen',
    moduleFileExtensions: ['html', 'js', 'json', 'ts'],
    coveragePathIgnorePatterns: ['/node_modules/', '/modules/*.*/'],
    moduleNameMapper: {
      '^@ngrx/(.*)': '<rootDir>/../../modules/$1',
      '^@cedu/(.*)': '<rootDir>/src/app/$1',
    },
    transformIgnorePatterns: ['node_modules/(?!@ngrx)'],
    modulePathIgnorePatterns: ['dist'],
    preset: 'jest-preset-angular',
    snapshotSerializers: [
      'jest-preset-angular/AngularSnapshotSerializer.js',
      'jest-preset-angular/HTMLCommentSerializer.js',
    ],
  };