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RegExp.prototype.flags <sup>[![Version Badge][npm-version-svg]][package-url]</sup>

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An ES6 spec-compliant `RegExp.prototype.flags` shim. Invoke its "shim" method to shim RegExp.prototype.flags if it is unavailable.
*Note*: `RegExp#flags` requires a true ES5 environment - specifically, one with ES5 getters.

This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES5-supported environment and complies with the [spec](http://www.ecma-international.org/ecma-262/6.0/#sec-get-regexp.prototype.flags).

Most common usage:
```js
var flags = require('regexp.prototype.flags');

assert(flags(/a/) === '');
assert(flags(new RegExp('a') === '');
assert(flags(/a/mig) === 'gim');
assert(flags(new RegExp('a', 'mig')) === 'gim');

if (!RegExp.prototype.flags) {
	flags.shim();
}

assert(flags(/a/) === /a/.flags);
assert(flags(new RegExp('a') === new RegExp('a').flags);
assert(flags(/a/mig) === /a/mig.flags);
assert(flags(new RegExp('a', 'mig')) === new RegExp('a', 'mig').flags);
```

## Tests
Simply clone the repo, `npm install`, and run `npm test`

[package-url]: https://npmjs.com/package/regexp.prototype.flags
[npm-version-svg]: http://versionbadg.es/es-shims/RegExp.prototype.flags.svg
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[testling-url]: https://ci.testling.com/es-shims/RegExp.prototype.flags
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