dotfiles/.vscode/extensions/vscodevim.vim-0.2.0/node_modules/lodash/isNumber.js
Cyryl Płotnicki 280bcab25f VSCode update
2016-09-24 13:12:34 +02:00

47 lines
1.1 KiB
JavaScript

var isObjectLike = require('./isObjectLike');
/** `Object#toString` result references. */
var numberTag = '[object Number]';
/** Used for built-in method references. */
var objectProto = Object.prototype;
/**
* Used to resolve the
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
* of values.
*/
var objectToString = objectProto.toString;
/**
* Checks if `value` is classified as a `Number` primitive or object.
*
* **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
* classified as numbers, use the `_.isFinite` method.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Lang
* @param {*} value The value to check.
* @returns {boolean} Returns `true` if `value` is a number, else `false`.
* @example
*
* _.isNumber(3);
* // => true
*
* _.isNumber(Number.MIN_VALUE);
* // => true
*
* _.isNumber(Infinity);
* // => true
*
* _.isNumber('3');
* // => false
*/
function isNumber(value) {
return typeof value == 'number' ||
(isObjectLike(value) && objectToString.call(value) == numberTag);
}
module.exports = isNumber;