Type Alias FileUploadRules

What a host lets its users upload. The browser checks these first; the host decides again.

type FileUploadRules = {
    extensions: readonly string[];
    maxBytes: number;
    nameError: (name: string) => string | null;
}

Properties

extensions: readonly string[]

With their dots, matched against the end of the name ignoring case.

maxBytes: number

nameError: (name: string) => string | null

Why name cannot name a file or folder, as a sentence; null when it can.