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