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43 lines
1.6 KiB
Markdown
43 lines
1.6 KiB
Markdown
6 years ago
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Browser-friendly inheritance fully compatible with standard node.js
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[inherits](http://nodejs.org/api/util.html#util_util_inherits_constructor_superconstructor).
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This package exports standard `inherits` from node.js `util` module in
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node environment, but also provides alternative browser-friendly
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implementation through [browser
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field](https://gist.github.com/shtylman/4339901). Alternative
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implementation is a literal copy of standard one located in standalone
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module to avoid requiring of `util`. It also has a shim for old
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browsers with no `Object.create` support.
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While keeping you sure you are using standard `inherits`
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implementation in node.js environment, it allows bundlers such as
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[browserify](https://github.com/substack/node-browserify) to not
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include full `util` package to your client code if all you need is
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just `inherits` function. It worth, because browser shim for `util`
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package is large and `inherits` is often the single function you need
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from it.
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It's recommended to use this package instead of
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`require('util').inherits` for any code that has chances to be used
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not only in node.js but in browser too.
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## usage
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```js
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var inherits = require('inherits');
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// then use exactly as the standard one
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```
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## note on version ~1.0
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Version ~1.0 had completely different motivation and is not compatible
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neither with 2.0 nor with standard node.js `inherits`.
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If you are using version ~1.0 and planning to switch to ~2.0, be
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careful:
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* new version uses `super_` instead of `super` for referencing
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superclass
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* new version overwrites current prototype while old one preserves any
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existing fields on it
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