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Babel preset for stage 1 plugins.

The gist of Stage 1 is:

Stage 1: proposal

What is it? A formal proposal for the feature.

What’s required? A so-called champion must be identified who is responsible for the proposal. Either the champion or a co-champion must be a member of TC39 (source). The problem solved by the proposal must be described in prose. The solution must be described via examples, an API and a discussion of semantics and algorithms. Lastly, potential obstacles for the proposal must be identified, such as interactions with other features and implementation challenges. Implementation-wise, polyfills and demos are needed.

What’s next? By accepting a proposal for stage 1, TC39 declares its willingness to examine, discuss and contribute to the proposal. Going forward, major changes to the proposal are expected


npm install --save-dev babel-preset-stage-1


Via .babelrc (Recommended)


  "presets": ["stage-1"]


babel script.js --presets stage-1

Via Node API

require("babel-core").transform("code", {
  presets: ["stage-1"]