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67 lines
1.5 KiB
67 lines
1.5 KiB
8 years ago
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# unherit [![Build Status][travis-badge]][travis] [![Coverage Status][codecov-badge]][codecov]
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Create a custom constructor which can be modified without affecting the
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original class.
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## Installation
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[npm][npm-install]:
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```bash
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npm install unherit
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```
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## Usage
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```js
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var EventEmitter = require('events').EventEmitter;
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/* Create a private class which acts just like
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* `EventEmitter`. */
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var Emitter = unherit(EventEmitter);
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Emitter.prototype.defaultMaxListeners = 0;
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/* Now, all instances of `Emitter` have no maximum
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* listeners, without affecting other `EventEmitter`s. */
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assert(new Emitter().defaultMaxListeners === 0); // true
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assert(new EventEmitter().defaultMaxListeners === undefined); // true
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assert(new Emitter() instanceof EventEmitter); // true
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```
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## API
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### `unherit(Super)`
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Create a custom constructor which can be modified without affecting the
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original class.
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###### Parameters
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* `Super` (`Function`) — Super-class.
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###### Returns
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`Function` — Constructor acting like `Super`, which can be modified
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without affecting the original class.
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## License
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[MIT][license] © [Titus Wormer][author]
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<!-- Definitions -->
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[travis-badge]: https://img.shields.io/travis/wooorm/unherit.svg
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[travis]: https://travis-ci.org/wooorm/unherit
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[codecov-badge]: https://img.shields.io/codecov/c/github/wooorm/unherit.svg
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[codecov]: https://codecov.io/github/wooorm/unherit
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[npm-install]: https://docs.npmjs.com/cli/install
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[license]: LICENSE
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[author]: http://wooorm.com
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