Function ensureValidCopy

fs/copy.ts:44–70

(
  src: string | URL,
  dest: string | URL,
  options: InternalCopyOptions,
)

}

async function ensureValidCopy(
  src: string | URL,
  dest: string | URL,
  options: InternalCopyOptions,
): Promise<Deno.FileInfo | undefined> {
  let destStat: Deno.FileInfo;

  try {
    destStat = await Deno.lstat(dest);
  } catch (err) {
    if (err instanceof Deno.errors.NotFound) {
      return;
    }
    throw err;
  }

  if (options.isFolder && !destStat.isDirectory) {
    throw new Error(
      `Cannot overwrite non-directory '${dest}' with directory '${src}'`,
    );
  }
  if (!options.overwrite) {
    throw new Deno.errors.AlreadyExists(`'${dest}' already exists.`);
  }

  return destStat;
}

function ensureValidCopySync(
  src: string | URL,