| 1 | var clamp = require('../math/clamp');
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| 2 | var toString = require('../lang/toString');
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| 3 |
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| 4 | /**
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| 5 | * Inserts a string at a given index.
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| 6 | */
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| 7 | function insert(string, index, partial){
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| 8 | string = toString(string);
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| 9 |
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| 10 | if (index < 0) {
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| 11 | index = string.length + index;
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| 12 | }
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| 13 |
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| 14 | index = clamp(index, 0, string.length);
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| 15 |
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| 16 | return string.substr(0, index) + partial + string.substr(index);
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| 17 | }
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| 18 |
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| 19 | module.exports = insert;
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| 20 |
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| 21 |
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