| 1 | var difference = require('./difference');
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| 2 | var slice = require('./slice');
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| 3 |
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| 4 | /**
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| 5 | * Insert item into array if not already present.
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| 6 | */
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| 7 | function insert(arr, rest_items) {
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| 8 | var diff = difference(slice(arguments, 1), arr);
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| 9 | if (diff.length) {
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| 10 | Array.prototype.push.apply(arr, diff);
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| 11 | }
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| 12 | return arr.length;
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| 13 | }
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| 14 | module.exports = insert;
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| 15 |
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