Does a JS type's prototype have a property

is-proto-prop

Does a JS type's prototype have a property

Uses Sindre Sorhus' proto-props

Install

npm install --save is-proto-prop

Usage

ES2015

import isProtoProp from 'is-proto-prop';

isProtoProp('array', 'length');
// => true

isProtoProp('Error', 'ignore');
// => false

// `is-proto-props` can only verify native JS types
isProtoProp('gulp', 'task');
// => false

ES5

var isProtoProp = require('is-proto-prop');

isProtoProp('array', 'length');
// => true

isProtoProp('Error', 'ignore');
// => false

// `is-proto-props` can only verify native JS types
isProtoProp('gulp', 'task');
// => false

API

isProtoProp(type, propertyName)

Returns a Boolean if propertyName is on type's prototype.

type

type: string

JS type to examine the prototype of. Note: is-proto-prop only looks at native JS types.

propertyName

type: string

Property name to look for on type's prototype. Note: propertyName is case sensitive.

LICENSE

MIT © Dustin Specker

Repository

dustinspecker/is-proto-prop