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- # babel-plugin-transform-es2015-typeof-symbol
- > ES6 introduces a new native type called [symbols](https://babeljs.io/learn-es2015/#ecmascript-2015-features-symbols). This transformer wraps all `typeof` expressions with a method that replicates native behaviour. (ie. returning "symbol" for symbols)
- ## Example
- **In**
- ```javascript
- typeof Symbol() === "symbol";
- ```
- **Out**
- ```javascript
- var _typeof = function (obj) {
- return obj && obj.constructor === Symbol ? "symbol" : typeof obj;
- };
- _typeof(Symbol()) === "symbol";
- ```
- ## Installation
- ```sh
- npm install --save-dev babel-plugin-transform-es2015-typeof-symbol
- ```
- ## Usage
- ### Via `.babelrc` (Recommended)
- **.babelrc**
- ```json
- {
- "plugins": ["transform-es2015-typeof-symbol"]
- }
- ```
- ### Via CLI
- ```sh
- babel --plugins transform-es2015-typeof-symbol script.js
- ```
- ### Via Node API
- ```javascript
- require("babel-core").transform("code", {
- plugins: ["transform-es2015-typeof-symbol"]
- });
- ```
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