javascript 使用lerna，monorepo和yarn工作空间创建一个babel变换器来修复babel-jest问题

Posted 2021-05-03

const config = require('../shared/babel.config.js');

 const { createTransformer } = require('babel-jest');
 module.exports = createTransformer({
  ...config,
});

const { join, resolve } = require('path');
 const { createTransformer } = require('babel-jest');
 const packagePath = resolve('../');

const packageGlob = join(packagePath, '*');
 module.exports = createTransformer({
  babelrcRoots: packageGlob,
});

// use this custom babel-transformer
transform: {
    '^.+\\.(js|ts|tsx)?$': '<rootDir>/test/babel-transformer',
  },