/** Create a type that represents either the value or an array of the value. @see Promisable @example ``` import type {Arrayable} from 'type-fest'; function bundle(input: string, output: Arrayable) { const outputList = Array.isArray(output) ? output : [output]; // … for (const output of outputList) { console.log(`write to: ${output}`); } } bundle('src/index.js', 'dist/index.js'); bundle('src/index.js', ['dist/index.cjs', 'dist/index.mjs']); ``` @category Array */ export type Arrayable = T | readonly T[];