| 1 | var indexOf = require('./indexOf');
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| 2 |
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| 3 | /**
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| 4 | * Combines an array with all the items of another.
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| 5 | * Does not allow duplicates and is case and type sensitive.
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| 6 | */
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| 7 | function combine(arr1, arr2) {
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| 8 | if (arr2 == null) {
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| 9 | return arr1;
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| 10 | }
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| 11 |
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| 12 | var i = -1, len = arr2.length;
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| 13 | while (++i < len) {
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| 14 | if (indexOf(arr1, arr2[i]) === -1) {
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| 15 | arr1.push(arr2[i]);
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| 16 | }
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| 17 | }
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| 18 |
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| 19 | return arr1;
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| 20 | }
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| 21 | module.exports = combine;
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| 22 |
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