deduped-babel-presets

Deduped Babel 6 Presets

Babel 6 presets and dependencies, with their shared dependencies manually deduplicated for npm2 compatibility.

This reduces the total size for an npm2 install of this module's dependencies from ~169 MB to ~7.8 MB:

Before	After

The following presets are available:

Presets

These modules provide presets for use in your Babel presets config:

Core Babel Presets

Where not otherwise noted, these provide the equivalent official Babel preset:

• deduped-babel-presets/es2015
• deduped-babel-presets/es2016
• deduped-babel-presets/react
• deduped-babel-presets/stage-3
• deduped-babel-presets/stage-2
• deduped-babel-presets/stage-1 - babel-preset-stage-1 plus the transform-decorators-legacy plugin.
• deduped-babel-presets/stage-0 - provides the same additional plugins as babel-preset-stage-0, but includes deduped-babel-presets/stage-1 instead of babel-preset-stage-1.

Custom Presets

• deduped-babel-presets/es2015-loose - babel-preset-es2015 with loose mode enabled where available.
• deduped-babel-presets/es2015-native - babel-preset-es2015 with es2015-modules-commonjs disabled, for tree-shaking builds with tools like Rollup and Webpack v2.
• deduped-babel-presets/es2015-loose-native - a combination of the above two presets.
• deduped-babel-presets/react-hmre - development preset for React Hot Module Reloading and render() error catching.
• deduped-babel-presets/react-prod - production optimisations for React, using the following plugins:
  • react-constant-elements
  • react-remove-prop-types
• deduped-babel-presets/runtime - preset for using the transform-runtime plugin (with all of its features activated as per the default).
• deduped-babel-presets/runtime-helpers - transform-runtime configured solely to import helpers from babel-runtime when necessary.
• deduped-babel-presets/runtime-polyfill - transform-runtime configured to import helpers from babel-runtime and apply ES6 polyfills within your code.
• deduped-babel-presets/runtime-regenerator - transform-runtime configured to import helpers from babel-runtime and the regenerator runtime when necessary (i.e. when async/await syntax is used).

Plugins

These modules provide plugins for use in your Babel plugins config:

• deduped-babel-presets/plugins/istanbul - the istanbul plugin for code coverage instrumentation, which needs exclude/include config.

• deduped-babel-presets/plugins/react-inline-elements - the react-inline-elements plugin.

  This is not included in the deduped-babel-presets/react-prod preset because it currently depends on having Symbol polyfilled to work in older browsers, which has the potential to introduce breaking changes to your production build.

  See React issue #5138.

MIT Licensed

pkgcount was used to manually deduplicate Babel 6 shared dependencies.