This is the default Babel preset used in all Vue CLI projects.

• babel-preset-env
  • modules: false
    • auto set to 'commonjs' in Jest tests
  • useBuiltIns: 'usage'
    • ensures polyfills are imported on-demand
  • targets is determined:
    • using browserslist field in package.json when building for browsers
    • set to { node: 'current' } when running unit tests in Node.js
• @babel/plugin-transform-runtime
  • Only enabled for helpers since polyfills are handled by babel-preset-env
• dynamic import syntax
• Object rest spread
• babel-preset-stage-2
• Vue JSX support
  • @babel/plugin-syntax-jsx
  • babel-plugin-transform-vue-jsx
  • babel-plugin-jsx-event-modifiers
  • babel-plugin-jsx-v-model

• modules

  Default:

  • false when building with webpack
  • 'commonjs' when running tests in Jest.

  Explicitly set modules option for babel-preset-env. See babel-preset-env docs for more details.

• targets

  Default:

  • determined from browserslist field in package.json when building for browsers
  • set to { node: 'current' } when running unit tests in Node.js

  Explicitly set targets option for babel-preset-env. See babel-preset-env docs for more details.

• useBuiltIns

  Default: 'usage'

  Explicitly set useBuiltIns option for babel-preset-env. See babel-preset-env docs for more details.

• jsx

  Default: true. Set to false to disable JSX support.