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mc_test/node_modules/es6-error/README.md

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+# es6-error
+
+[![npm version](https://badge.fury.io/js/es6-error.svg)](https://www.npmjs.com/package/es6-error)
+[![Build Status](https://travis-ci.org/bjyoungblood/es6-error.svg?branch=master)](https://travis-ci.org/bjyoungblood/es6-error)
+
+An easily-extendable error class for use with ES6 classes (or ES5, if you so
+choose).
+
+Tested in Node 4.0, Chrome, and Firefox.
+
+## Why?
+
+I made this because I wanted to be able to extend Error for inheritance and type
+checking, but can never remember to add
+`Error.captureStackTrace(this, this.constructor.name)` to the constructor or how
+to get the proper name to print from `console.log`.
+
+## ES6 Usage
+
+```javascript
+
+import ExtendableError from 'es6-error';
+
+class MyError extends ExtendableError {
+  // constructor is optional; you should omit it if you just want a custom error
+  // type for inheritance and type checking
+  constructor(message = 'Default message') {
+    super(message);
+  }
+}
+
+export default MyError;
+```
+
+## ES5 Usage
+
+```javascript
+
+var util = require('util');
+var ExtendableError = require('es6-error');
+
+function MyError(message) {
+  message = message || 'Default message';
+  ExtendableError.call(this, message);
+}
+
+util.inherits(MyError, ExtendableError);
+
+module.exports = MyError;
+```
+
+### Known Issues
+
+- Uglification can obscure error class names ([#31](https://github.com/bjyoungblood/es6-error/issues/31#issuecomment-301128220))
+
+#### Todo
+
+- Better browser compatibility
+- Browser tests