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29 lines
527 B
29 lines
527 B
'use strict'; |
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module.exports = function union(init) { |
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if (!Array.isArray(init)) { |
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throw new TypeError('arr-union expects the first argument to be an array.'); |
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} |
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var len = arguments.length; |
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var i = 0; |
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while (++i < len) { |
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var arg = arguments[i]; |
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if (!arg) continue; |
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if (!Array.isArray(arg)) { |
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arg = [arg]; |
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} |
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for (var j = 0; j < arg.length; j++) { |
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var ele = arg[j]; |
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if (init.indexOf(ele) >= 0) { |
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continue; |
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} |
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init.push(ele); |
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} |
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} |
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return init; |
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};
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