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std/node/_fs/_fs_readdir.ts

Deno standard library
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import { asyncIterableToCallback } from "./_fs_watch.ts";import Dirent from "./_fs_dirent.ts";import { fromFileUrl } from "../path.ts";
function toDirent(val: Deno.DirEntry): Dirent { return new Dirent(val);}
type readDirOptions = { encoding?: string; withFileTypes?: boolean;};
type readDirCallback = (err: Error | undefined, files: string[]) => void;
type readDirCallbackDirent = (err: Error | undefined, files: Dirent[]) => void;
type readDirBoth = ( err: Error | undefined, files: string[] | Dirent[] | Array<string | Dirent>,) => void;
export function readdir( path: string | URL, options: { withFileTypes?: false; encoding?: string }, callback: readDirCallback,): void;export function readdir( path: string | URL, options: { withFileTypes: true; encoding?: string }, callback: readDirCallbackDirent,): void;export function readdir(path: string | URL, callback: readDirCallback): void;export function readdir( path: string | URL, optionsOrCallback: readDirOptions | readDirCallback | readDirCallbackDirent, maybeCallback?: readDirCallback | readDirCallbackDirent,) { const callback = (typeof optionsOrCallback === "function" ? optionsOrCallback : maybeCallback) as readDirBoth | undefined; const options = typeof optionsOrCallback === "object" ? optionsOrCallback : null; const result: Array<string | Dirent> = []; path = path instanceof URL ? fromFileUrl(path) : path;
if (!callback) throw new Error("No callback function supplied");
if (options?.encoding) { try { new TextDecoder(options.encoding); } catch (error) { throw new Error( `TypeError [ERR_INVALID_OPT_VALUE_ENCODING]: The value "${options.encoding}" is invalid for option "encoding"`, ); } }
try { asyncIterableToCallback(Deno.readDir(path), (val, done) => { if (typeof path !== "string") return; if (done) { callback(undefined, result); return; } if (options?.withFileTypes) { result.push(toDirent(val)); } else result.push(decode(val.name)); }); } catch (error) { callback(error, result); }}
function decode(str: string, encoding?: string): string { if (!encoding) return str; else { const decoder = new TextDecoder(encoding); const encoder = new TextEncoder(); return decoder.decode(encoder.encode(str)); }}
export function readdirSync( path: string | URL, options: { withFileTypes: true; encoding?: string },): Dirent[];export function readdirSync( path: string | URL, options?: { withFileTypes?: false; encoding?: string },): string[];export function readdirSync( path: string | URL, options?: readDirOptions,): Array<string | Dirent> { const result = []; path = path instanceof URL ? fromFileUrl(path) : path;
if (options?.encoding) { try { new TextDecoder(options.encoding); } catch (error) { throw new Error( `TypeError [ERR_INVALID_OPT_VALUE_ENCODING]: The value "${options.encoding}" is invalid for option "encoding"`, ); } }
for (const file of Deno.readDirSync(path)) { if (options?.withFileTypes) { result.push(toDirent(file)); } else result.push(decode(file.name)); } return result;}