mrpiglr
190b6b2eab
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38 lines
886 B
JavaScript
38 lines
886 B
JavaScript
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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