Function customAlphabet

customAlphabet<Type extends string>(
alphabet: string,
defaultSize?: number,
): (size?: number) => Type
Generate secure unique ID with custom alphabet.

Alphabet must contain 256 symbols or less. Otherwise, the generator will not be secure.
Type Parameters
- Type extends string
Parameters
- alphabet: string
  Alphabet used to generate the ID.
- OptionaldefaultSize: number
  Size of the ID. The default size is 21.
Returns (size?: number) => Type
A random string generator.
```
const { customAlphabet } = require('nanoid')
const nanoid = customAlphabet('0123456789абвгдеё', 5)
nanoid() //=> "8ё56а"
```
Typeparam
Type The ID type to replace string with some opaque type.
- Defined in work/library/library/node_modules/.pnpm/nanoid@5.1.5/node_modules/nanoid/index.d.ts:47