jest-preset.js

const customTransformers = require('./build/transformers');
const snapshotSerializers = require('./build/serializers');

module.exports = {
  globals: {
    'ts-jest': {
      tsconfig: '<rootDir>/tsconfig.spec.json',
      stringifyContentPathRegex: '\\.html$',
      astTransformers: {
        before: customTransformers,
      },
    },
  },
  testEnvironment: 'jsdom',
  transform: {
    '^.+\\.(ts|js|html)$': 'jest-preset-angular',
  },
  moduleFileExtensions: ['ts', 'html', 'js', 'json'],
  moduleNameMapper: {
    '^src/(.*)$': '<rootDir>/src/$1',
    '^app/(.*)$': '<rootDir>/src/app/$1',
    '^assets/(.*)$': '<rootDir>/src/assets/$1',
    '^environments/(.*)$': '<rootDir>/src/environments/$1',
  },
  transformIgnorePatterns: ['node_modules/(?!@ngrx)'],
  snapshotSerializers,
};