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doc/usage/require.md

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+---
+layout: docs
+title: Require Hook
+description: How to use the require hook.
+permalink: /docs/usage/require/
+---
+
+## Install
+
+```sh
+$ npm install 6to5
+```
+
+## Usage
+
+```js
+require('6to5/register');
+```
+
+All subsequent files required by node with the extensions `.es6`, `.es`, and
+`.js` will be transformed by 6to5. The polyfill specified in Polyfill is also
+required.
+
+**NOTE:** By default all requires to `node_modules` will be ignored. You can
+override this by passing an ignore regex via:
+
+```js
+require('6to5/register')({
+  // This will override `node_modules` ignoring - you can alternatively pass
+  // a regex
+  ignore: false
+});
+```
+
+## Register Options
+
+```javascript
+require('6to5/register')({
+  // Optional ignore regex - if any filenames **do** match this regex then they
+  // aren't compiled
+  ignore: /regex/,
+
+  // Optional only regex - if any filenames **don't** match this regex then they
+  // aren't compiled
+  only: /my_es6_folder/,
+
+  // See options above for usage
+  whitelist: [],
+  blacklist: [],
+
+  // This will remove the currently hooked extensions of .es6 and .js so you'll
+  // have to add them back if you want them to be used again.
+  extensions: ['.js', '.es6']
+});
+```