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x/lodash/npm-package/isNumber.js

A modern JavaScript utility library delivering modularity, performance, & extras.
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var baseGetTag = require('./_baseGetTag'), isObjectLike = require('./isObjectLike');
/** `Object#toString` result references. */var numberTag = '[object Number]';
/** * 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) && baseGetTag(value) == numberTag);}
module.exports = isNumber;