# @babel/plugin-transform-property-mutators > This plugin allows Babel to transform [object initializer mutators](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer#Method_definitions) into `Object.defineProperties`. ## Example **In** ```javascript var foo = { get bar() { return "bar"; } }; ``` **Out** ```javascript var foo = Object.defineProperties({}, { bar: { get: function () { return "bar"; }, enumerable: true, configurable: true } }); ``` ## Installation ```sh npm install --save-dev @babel/plugin-transform-property-mutators ``` ## Usage ### Via `.babelrc` (Recommended) **.babelrc** ```json { "plugins": ["@babel/transform-property-mutators"] } ``` ### Via CLI ```sh babel --plugins @babel/transform-property-mutators script.js ``` ### Via Node API ```javascript require("@babel/core").transform("code", { plugins: ["@babel/transform-property-mutators"] }); ```