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Returns true if a value is any of the object types: array, regexp, plain object, function or date. This is useful for determining if a value can be extended, e.g. "can the value have keys?"
Install with npm
$ npm i is-extendable --save
var isExtendable = require('is-extendable');
Returns true if the value is any of the following:
array
regexp
plain object
function
date
error
All objects in JavaScript can have keys, but it's a pain to check for this, since we ether need to verify that the value is not null
or undefined
and:
object
, function
Also note that an extendable
object is not the same as an extensible object, which is one that (in es6) is not sealed, frozen, or marked as non-extensible using preventExtensions
.
Object
constructor.Install dev dependencies:
$ npm i -d && npm test
Pull requests and stars are always welcome. For bugs and feature requests, please create an issue
Jon Schlinkert
Copyright © 2015 Jon Schlinkert Released under the MIT license.
This file was generated by verb-cli on July 04, 2015.