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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 | |
} | |
export { nanoid, customAlphabet } | |