| 1 | var filter = require('./filter');
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| 2 |
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| 3 | /**
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| 4 | * @return {array} Array of unique items
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| 5 | */
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| 6 | function unique(arr, compare){
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| 7 | compare = compare || isEqual;
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| 8 | return filter(arr, function(item, i, arr){
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| 9 | var n = arr.length;
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| 10 | while (++i < n) {
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| 11 | if ( compare(item, arr[i]) ) {
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| 12 | return false;
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| 13 | }
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| 14 | }
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| 15 | return true;
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| 16 | });
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| 17 | }
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| 18 |
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| 19 | function isEqual(a, b){
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| 20 | return a === b;
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| 21 | }
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| 22 |
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| 23 | module.exports = unique;
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| 24 |
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| 25 |
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