1 var isObjectLike = require('./isObjectLike');
3 /** `Object#toString` result references. */
4 var numberTag = '[object Number]';
6 /** Used for built-in method references. */
7 var objectProto = Object.prototype;
10 * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
13 var objectToString = objectProto.toString;
16 * Checks if `value` is classified as a `Number` primitive or object.
18 * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are classified
19 * as numbers, use the `_.isFinite` method.
24 * @param {*} value The value to check.
25 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
31 * _.isNumber(Number.MIN_VALUE);
34 * _.isNumber(Infinity);
40 function isNumber(value) {
41 return typeof value == 'number' ||
42 (isObjectLike(value) && objectToString.call(value) == numberTag);
45 module.exports = isNumber;