Last change
on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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Property mode
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100644
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File size:
527 bytes
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[6a3a178] | 1 | 'use strict';
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| 2 |
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| 3 | module.exports = function union(init) {
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| 4 | if (!Array.isArray(init)) {
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| 5 | throw new TypeError('arr-union expects the first argument to be an array.');
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| 6 | }
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| 7 |
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| 8 | var len = arguments.length;
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| 9 | var i = 0;
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| 10 |
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| 11 | while (++i < len) {
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| 12 | var arg = arguments[i];
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| 13 | if (!arg) continue;
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| 14 |
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| 15 | if (!Array.isArray(arg)) {
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| 16 | arg = [arg];
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| 17 | }
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| 18 |
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| 19 | for (var j = 0; j < arg.length; j++) {
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| 20 | var ele = arg[j];
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| 21 |
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| 22 | if (init.indexOf(ele) >= 0) {
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| 23 | continue;
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| 24 | }
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| 25 | init.push(ele);
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| 26 | }
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| 27 | }
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| 28 | return init;
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| 29 | };
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