How to use the default function from babel-jest

Find comprehensive JavaScript babel-jest.default code examples handpicked from public code repositorys.

babel-jest.default is a module used to transform code with Babel in Jest tests.

index.js

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}


function processFile (fileContent, filePath, config) {
  let processedContent = String(erbTransformer(fileContent, filePath, config))
  if (config.babelConfig) {
    const babelTransformer = babelJest.default.createTransformer(config.babelConfig)
    const transformOptions = { config: process.cwd() }
    processedContent = babelTransformer.process(processedContent, filePath, transformOptions).code
  }
  return processedContent

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+ 8 other calls in file

esbuild-jest.js

GitHub: happilymarrieddad/nick-examples

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const getCacheKey = require('@jest/create-cache-key-function')


/**
 * copied from: https://github.com/aelbore/esbuild-jest
 */
const babelTransformer = babelJest.default.createTransformer({
  plugins: [ '@babel/plugin-transform-modules-commonjs' ],
  presets: [
    '@babel/preset-typescript'
  ],

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How does babel-jest.default work?

babel-jest.default is a function provided by the babel-jest package that is used as a Jest transformer for transpiling code written in modern JavaScript to a format that is compatible with Jest. The function takes a string of code as input, applies the configured Babel transformations to it, and returns the resulting transformed code as a string. The transformed code can then be executed by Jest.

Ai Example

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// jest.config.js
module.exports = {
  transform: {
    "^.+\\.jsx?$": "babel-jest",
  },
};

This configuration will use babel-jest to transform any .js or .jsx files that are encountered during Jest tests.

Other functions in babel-jest

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babel-jest.createTransformer is the most popular function in babel-jest (73 examples)

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