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34 lines
1.1 KiB
34 lines
1.1 KiB
// This alphabet uses `A-Za-z0-9_-` symbols. |
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// The order of characters is optimized for better gzip and brotli compression. |
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// References to the same file (works both for gzip and brotli): |
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// `'use`, `andom`, and `rict'` |
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// References to the brotli default dictionary: |
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// `-26T`, `1983`, `40px`, `75px`, `bush`, `jack`, `mind`, `very`, and `wolf` |
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let urlAlphabet = |
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'useandom-26T198340PX75pxJACKVERYMINDBUSHWOLF_GQZbfghjklqvwyzrict' |
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let customAlphabet = (alphabet, defaultSize = 21) => { |
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return (size = defaultSize) => { |
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let id = '' |
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// A compact alternative for `for (var i = 0; i < step; i++)`. |
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let i = size | 0 |
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while (i--) { |
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// `| 0` is more compact and faster than `Math.floor()`. |
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id += alphabet[(Math.random() * alphabet.length) | 0] |
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} |
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return id |
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} |
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} |
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let nanoid = (size = 21) => { |
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let id = '' |
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// A compact alternative for `for (var i = 0; i < step; i++)`. |
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let i = size | 0 |
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while (i--) { |
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// `| 0` is more compact and faster than `Math.floor()`. |
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id += urlAlphabet[(Math.random() * 64) | 0] |
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} |
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return id |
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} |
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export { nanoid, customAlphabet }
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