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38 lines
886 B
38 lines
886 B
var baseGetTag = require('./_baseGetTag'), |
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isObjectLike = require('./isObjectLike'); |
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/** `Object#toString` result references. */ |
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var numberTag = '[object Number]'; |
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/** |
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* Checks if `value` is classified as a `Number` primitive or object. |
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* |
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* **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are |
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* classified as numbers, use the `_.isFinite` method. |
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* |
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* @static |
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* @memberOf _ |
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* @since 0.1.0 |
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* @category Lang |
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* @param {*} value The value to check. |
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* @returns {boolean} Returns `true` if `value` is a number, else `false`. |
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* @example |
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* |
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* _.isNumber(3); |
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* // => true |
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* |
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* _.isNumber(Number.MIN_VALUE); |
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* // => true |
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* |
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* _.isNumber(Infinity); |
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* // => true |
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* |
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* _.isNumber('3'); |
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* // => false |
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*/ |
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function isNumber(value) { |
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return typeof value == 'number' || |
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(isObjectLike(value) && baseGetTag(value) == numberTag); |
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} |
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module.exports = isNumber;
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