| 1 | /* @flow */
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| 2 |
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| 3 | // a simple djb2 hash based on hash-string:
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| 4 | // https://github.com/MatthewBarker/hash-string/blob/master/source/hash-string.js
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| 5 | // returns a hex-encoded hash
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| 6 | export default function hash(text: string): string {
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| 7 | if (!text) {
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| 8 | return '';
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| 9 | }
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| 10 |
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| 11 | let hashValue = 5381;
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| 12 | let index = text.length - 1;
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| 13 |
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| 14 | while (index) {
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| 15 | hashValue = hashValue * 33 ^ text.charCodeAt(index);
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| 16 | index -= 1;
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| 17 | }
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| 18 |
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| 19 | return (hashValue >>> 0).toString(16);
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| 20 | }
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