jest.config.js

const path = require('path');

module.exports = {
  displayName: __dirname.split(path.sep).slice(-2).join(path.posix.sep),
  preset: 'jest-preset-angular/presets/defaults-esm',
  setupFilesAfterEnv: ['<rootDir>/setup-jest.ts'],
  transformIgnorePatterns: ['/node_modules/(?!@angular|rxjs|nanoid|uuid)'],
  snapshotFormat: {
    escapeString: true,
    printBasicPrototype: true,
  },
  coverageDirectory: './coverage/testapp',
  transform: {
    '^.+\\.(ts|mjs|js|html)$': [
      'jest-preset-angular',
      {
        tsconfig: '<rootDir>/tsconfig.spec.json',
        stringifyContentPathRegex: '\\.(html|svg)$',
      },
    ],
  },
  snapshotSerializers: [
    'jest-preset-angular/build/serializers/no-ng-attributes',
    'jest-preset-angular/build/serializers/ng-snapshot',
    'jest-preset-angular/build/serializers/html-comment',
  ],
  testMatch: [
    '<rootDir>/src/**/__tests__/**/*.[jt]s?(x)',
    '<rootDir>/src/**/?(*.)+(spec|test).[jt]s?(x)',
  ],
};