Object rest spread transform

Example

let { x, y, ...z } = { x: 1, y: 2, a: 3, b: 4 };
console.log(x); // 1
console.log(y); // 2
console.log(z); // { a: 3, b: 4 }

let n = { x, y, ...z };
console.log(n); // { x: 1, y: 2, a: 3, b: 4 }

npm install --save-dev babel-plugin-transform-object-rest-spread

.babelrc

{
  "plugins": ["transform-object-rest-spread"]
}

babel --plugins transform-object-rest-spread script.js

require("babel-core").transform("code", {
  plugins: ["transform-object-rest-spread"]
});

boolean, defaults to false.

By default, this plugin uses Babel’s extends helper which polyfills Object.assign. Enabling this option will use Object.assign directly.

.babelrc

{
  "plugins": [
    ["transform-object-rest-spread", { "useBuiltIns": true }]
  ]
}

z = { x, ...y };

Out

z = Object.assign({ x }, y);