Angular Ivy

Starting from v9.0.0+, jest-preset-angular is fully compatible with Angular Ivy. To make sure that Jest uses the Angular Ivy, you must run ngcc before running tests. ngcc will transform all Angular-format packages to be compatible with Ivy compiler.

jest-preset-angular also provides a Jest global setup file to help you to run ngcc with Jest. Add to the following section:

• to your root Jest config

JavaScript

// jest.config.js
module.exports = {
  //...
  globalSetup: 'jest-preset-angular/global-setup',
};

TypeScript

// jest.config.ts
import type { Config } from 'jest';

const jestConfig: Config = {
  //...
  globalSetup: 'jest-preset-angular/global-setup',
};

export default jestConfig;

Control ngcc processing

Since v12.0.0, jest-preset-angular provide a possibility to skip ngcc via globalThis by doing the following

JavaScript

// jest.config.js
globalThis.ngJest = {
  skipNgcc: true,
  tsconfig: 'tsconfig.spec.json', // this is the project root tsconfig
};

module.exports = {
  //...
  globalSetup: 'jest-preset-angular/global-setup',
};

TypeScript

// jest.config.ts
import type { Config } from 'jest';

globalThis.ngJest = {
  skipNgcc: true,
  tsconfig: 'tsconfig.spec.json', // this is the project root tsconfig
};

const jestConfig: Config = {
  //...
  globalSetup: 'jest-preset-angular/global-setup',
};

export default jestConfig;