babel/packages/babel-plugin-transform-function-sent/README.md

@babel/plugin-transform-function-sent

Compile the function.sent meta property, used inside generator functions, to valid ES2015 code.

Example

function* generator() {
    console.log("Sent", function.sent);
    console.log("Yield", yield);
}

const iterator = generator();
iterator.next(1); // Logs "Sent 1"
iterator.next(2); // Logs "Yield 2"

Is compiled roughly to

let generator = _skipFirstGeneratorNext(function* () {
    const _functionSent = yield;
    console.log("Sent", _functionSent);
    console.log("Yield", yield);
});

const iterator = generator();
iterator.next(1); // Logs "Sent 1"
iterator.next(2); // Logs "Yield 1"

Installation

npm install --save-dev @babel/plugin-transform-function-sent

Usage

Via .babelrc (Recommended)

.babelrc

{
  "plugins": ["@babel/transform-function-sent"]
}

Via CLI

babel --plugins @babel/transform-function-sent script.js

Via Node API

require("@babel/core").transform("code", {
  plugins: ["@babel/transform-function-sent"]
});

References

• Proposal