@babel/compat-data

What is @babel/compat-data?

The @babel/compat-data package provides data about the environment features that Babel can target. It includes information about browser and JavaScript engine versions that support various ECMAScript features. This data is used by Babel to determine which transformations and polyfills are necessary for a given target environment.

What are @babel/compat-data's main functionalities?

Environment Data Retrieval

Retrieve compatibility data for the last two versions of browsers. This is used in Babel's preset-env to determine which transformations/polyfills are needed.

"last 2 versions"

Specific Feature Data

Get data about a specific ECMAScript feature, such as arrow functions, to see which environments support it natively.

"es6.arrow-functions"

Other packages similar to @babel/compat-data

core-js-compat

Provides compatibility data for core-js, a library that includes polyfills for ECMAScript features. It is similar to @babel/compat-data but focuses on the features polyfilled by core-js.

caniuse-lite

A lighter version of caniuse-db, containing browser support tables for front-end technologies. It is similar to @babel/compat-data in that it provides compatibility data, but it is more general and not specific to Babel's needs.

browserslist

A tool for sharing target browsers and Node.js versions between different front-end tools. It is similar to @babel/compat-data in that it helps determine which environments to target, but it does not provide specific feature support data.

README

@babel/compat-data

See our website @babel/compat-data for more information.

Install

Using npm:

npm install --save @babel/compat-data

or using yarn:

yarn add @babel/compat-data

Changelog

v7.16.8 (2022-01-10)

:bug: Bug Fix

• babel-generator, babel-plugin-syntax-typescript, babel-plugin-transform-parameters
  • #14113 Print trailing comma after a single TS generic in arrow fns (@ozanhonamlioglu)
• babel-traverse
  • #14105 fix: forward stop signal to parent path (@JLHwung)
• babel-register
  • #14107 Don't mutate @babel/register options (@nicolo-ribaudo)
• babel-plugin-transform-modules-commonjs
  • #14097 Register binding for newly created vars for commonjs transforms (@The-x-Theorist)
• babel-plugin-transform-typescript
  • #14093 Fix TypeScript Enum self-references (@magic-akari)

:nail_care: Polish

• babel-generator
  • #14094 Always print directives with double quotes when minified (@overlookmotel)

:house: Internal

• babel-helper-fixtures, babel-plugin-proposal-record-and-tuple, babel-preset-env
  • #14118 Always use the plugin/preset name in fixtures options (@nicolo-ribaudo)

:microscope: Output optimization

• babel-helper-remap-async-to-generator, babel-helper-wrap-function, babel-plugin-transform-async-to-generator
  • #14122 Optimize transform-async-to-generator output (@magic-akari)