80 lines
1.8 KiB
Markdown
80 lines
1.8 KiB
Markdown
# unherit
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[![Build][build-badge]][build]
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[![Coverage][coverage-badge]][coverage]
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[![Downloads][downloads-badge]][downloads]
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[![Size][size-badge]][size]
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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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var unherit = require('unherit')
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// Create a private class which acts just like `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 listeners, without affecting
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// other `EventEmitter`s.
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new Emitter().defaultMaxListeners === 0 // => true
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new EventEmitter().defaultMaxListeners === undefined // => true
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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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[build-badge]: https://img.shields.io/travis/wooorm/unherit.svg
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[build]: https://travis-ci.org/wooorm/unherit
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[coverage-badge]: https://img.shields.io/codecov/c/github/wooorm/unherit.svg
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[coverage]: https://codecov.io/github/wooorm/unherit
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[downloads-badge]: https://img.shields.io/npm/dm/unherit.svg
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[downloads]: https://www.npmjs.com/package/unherit
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[size-badge]: https://img.shields.io/bundlephobia/minzip/unherit.svg
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[size]: https://bundlephobia.com/result?p=unherit
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[npm-install]: https://docs.npmjs.com/cli/install
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[license]: license
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[author]: https://wooorm.com
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