Novices Performing Miracles
    Wondering what’s next for npm?Check out our public roadmap! »

    is-extendable
    TypeScript icon, indicating that this package has built-in type declarations

    1.0.1 • Public • Published

    is-extendable NPM version NPM monthly downloads NPM total downloads Linux Build Status

    Returns true if a value is a plain object, array or function.

    Install

    Install with npm:

    $ npm install --save is-extendable

    Usage

    var isExtendable = require('is-extendable');

    Returns true if the value is any of the following:

    • array
    • plain object
    • function

    Notes

    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:

    • the value is not a primitive, or
    • that the object is a plain object, function or array

    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.

    Release history

    v1.0.0 - 2017/07/20

    Breaking changes

    • No longer considers date, regex or error objects to be extendable

    About

    Related projects

    Contributing

    Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

    Building docs

    (This project's readme.md is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)

    To generate the readme, run the following command:

    $ npm install -g verbose/verb#dev verb-generate-readme && verb

    Running tests

    Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:

    $ npm install && npm test

    Author

    Jon Schlinkert

    License

    Copyright © 2017, Jon Schlinkert. Released under the MIT License.


    This file was generated by verb-generate-readme, v0.6.0, on July 20, 2017.

    Install

    npm i is-extendable

    DownloadsWeekly Downloads

    31,404,153

    Version

    1.0.1

    License

    MIT

    Last publish

    Collaborators

    • avatar
    • avatar