@netlify/build/lib/types/utils/many.d.ts

Netlify build module

type ArrayByMode<T, Mode extends 'immutable' | 'mutable' = 'immutable'> = {
    immutable: readonly T[];
    mutable: T[];
}[Mode];
export type Many<T, Mode extends 'immutable' | 'mutable' = 'immutable'> = T | ArrayByMode<T, Mode>;
export {};