universal-fs/dist/client/operations/readFile/types/readFile.d.ts

Allows a client or server to access the file system in the current codebase or a different one.

export interface ReadFileParams {
    path: PathLike;
    options?: ({
        encoding?: null | undefined | BufferEncoding;
        flag?: OpenMode | undefined;
    } & Abortable) | null;
}
export type ReadFileReturn = Promise<string | Buffer>;