Function forEachDeepFile

test/unit/documentation.test.ts:220–230

(
  dir: string,
  callback: (file: string) => void,
  extension = '',
)

    : undefined;

const forEachDeepFile = (
  dir: string,
  callback: (file: string) => void,
  extension = '',
): void =>
  forEachDirAndFile(
    dir,
    (dir) => forEachDeepFile(dir, callback, extension),
    (file) => callback(file),
    extension,
  );

const forEachDirAndFile = (
  dir: string,