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- // This alphabet uses `A-Za-z0-9_-` symbols. The genetic algorithm helped
- // optimize the gzip compression for this alphabet.
- let urlAlphabet =
- 'ModuleSymbhasOwnPr-0123456789ABCDEFGHNRVfgctiUvz_KqYTJkLxpZXIjQW'
- let customAlphabet = (alphabet, size) => {
- return () => {
- let id = ''
- // A compact alternative for `for (var i = 0; i < step; i++)`.
- let i = size
- while (i--) {
- // `| 0` is more compact and faster than `Math.floor()`.
- id += alphabet[(Math.random() * alphabet.length) | 0]
- }
- return id
- }
- }
- let nanoid = (size = 21) => {
- let id = ''
- // A compact alternative for `for (var i = 0; i < step; i++)`.
- let i = size
- while (i--) {
- // `| 0` is more compact and faster than `Math.floor()`.
- id += urlAlphabet[(Math.random() * 64) | 0]
- }
- return id
- }
- module.exports = { nanoid, customAlphabet }
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