root / HServer / 00.Server / 00.Program / node_modules / object-component / index.js
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| 1 | 39 | HKM | |
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| 2 | /**
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| 3 | * HOP ref.
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| 4 | */
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| 5 | |||
| 6 | var has = Object.prototype.hasOwnProperty;
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| 7 | |||
| 8 | /**
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| 9 | * Return own keys in `obj`.
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| 10 | *
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| 11 | * @param {Object} obj
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| 12 | * @return {Array}
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| 13 | * @api public
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| 14 | */
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| 15 | |||
| 16 | exports.keys = Object.keys || function(obj){
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| 17 | var keys = [];
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| 18 | for (var key in obj) { |
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| 19 | if (has.call(obj, key)) {
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| 20 | keys.push(key); |
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| 21 | } |
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| 22 | } |
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| 23 | return keys;
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| 24 | }; |
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| 25 | |||
| 26 | /**
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| 27 | * Return own values in `obj`.
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| 28 | *
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| 29 | * @param {Object} obj
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| 30 | * @return {Array}
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| 31 | * @api public
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| 32 | */
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| 33 | |||
| 34 | exports.values = function(obj){ |
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| 35 | var vals = [];
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| 36 | for (var key in obj) { |
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| 37 | if (has.call(obj, key)) {
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| 38 | vals.push(obj[key]); |
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| 39 | } |
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| 40 | } |
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| 41 | return vals;
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| 42 | }; |
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| 43 | |||
| 44 | /**
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| 45 | * Merge `b` into `a`.
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| 46 | *
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| 47 | * @param {Object} a
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| 48 | * @param {Object} b
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| 49 | * @return {Object} a
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| 50 | * @api public
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| 51 | */
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| 52 | |||
| 53 | exports.merge = function(a, b){ |
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| 54 | for (var key in b) { |
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| 55 | if (has.call(b, key)) {
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| 56 | a[key] = b[key]; |
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| 57 | } |
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| 58 | } |
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| 59 | return a;
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| 60 | }; |
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| 61 | |||
| 62 | /**
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| 63 | * Return length of `obj`.
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| 64 | *
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| 65 | * @param {Object} obj
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| 66 | * @return {Number}
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| 67 | * @api public
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| 68 | */
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| 69 | |||
| 70 | exports.length = function(obj){ |
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| 71 | return exports.keys(obj).length;
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| 72 | }; |
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| 73 | |||
| 74 | /**
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| 75 | * Check if `obj` is empty.
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| 76 | *
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| 77 | * @param {Object} obj
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| 78 | * @return {Boolean}
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| 79 | * @api public
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| 80 | */
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| 81 | |||
| 82 | exports.isEmpty = function(obj){ |
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| 83 | return 0 == exports.length(obj); |
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| 84 | }; |