| 1 |
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| 2 | /**
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| 3 | * Expose `isEmpty`.
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| 4 | */
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| 5 |
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| 6 | module.exports = isEmpty;
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| 7 |
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| 8 |
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| 9 | /**
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| 10 | * Has.
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| 11 | */
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| 12 |
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| 13 | var has = Object.prototype.hasOwnProperty;
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| 14 |
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| 15 |
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| 16 | /**
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| 17 | * Test whether a value is "empty".
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| 18 | *
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| 19 | * @param {Mixed} val
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| 20 | * @return {Boolean}
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| 21 | */
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| 22 |
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| 23 | function isEmpty (val) {
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| 24 | if (null == val) return true;
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| 25 | if ('number' == typeof val) return 0 === val;
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| 26 | if (undefined !== val.length) return 0 === val.length;
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| 27 | for (var key in val) if (has.call(val, key)) return false;
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| 28 | return true;
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| 29 | } |
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