Skip to main content

jest

# typescript
npm i -D jest ts-node ts-jest @types/jest
npx ts-jest config:init

# js
npx jest --init

配置​

jest.config.js​

const { pathsToModuleNameMapper } = require('ts-jest/utils');
const { compilerOptions } = require('./tsconfig');

module.exports = {
  setupFiles: ['<rootDir>/jest.setup.js'],
  transform: {
    '^.+\\.(ts|tsx)$': 'ts-jest',
  },
  globals: {
    'ts-jest': {
      // tsConfig: 'tsconfig.jest.json',
      tsConfig: 'tsconfig.json',
    },
  },
  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>/' }),
};

jest.setup.js​

require('dotenv').config();

jest.config.ts​

import { InitialOptionsTsJest } from 'ts-jest/dist/types';

export default {
  preset: 'ts-jest',
  testEnvironment: 'node',
} as InitialOptionsTsJest;

majestic​

npx majestic

FAQ

Cannot use import statement outside a module​

Node 环境执行​

/**
 * @jest-environment node
 */

ReferenceError: self is not defined​

  • 可能需 dom 环境执行
  1. 修改单个
/**
 * @jest-environment jsdom
 */
  1. 修改默认
jest.config.js
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'jsdom',
};