mirror of
https://github.com/denoland/deno.git
synced 2024-11-27 16:10:57 -05:00
078def0ff8
Use `access` on *nix and `GetFileAttributesW` on Windows. [Benchmark](https://paste.divy.work/p/-gq8Ark.js): ``` $ deno run -A bench.mjs # main (568dd) existsSync: 8980.636629ms $ target/release/deno run -A bench.mjs # this PR existsSync: 6448.7604519999995ms $ bun bench.mjs existsSync: 6562.88671ms $ node bench.mjs existsSync: 7740.064653ms ``` Ref https://github.com/denoland/deno/pull/24434#discussion_r1679777912
41 lines
1.5 KiB
TypeScript
41 lines
1.5 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
|
|
// TODO(petamoriken): enable prefer-primordials for node polyfills
|
|
// deno-lint-ignore-file prefer-primordials
|
|
|
|
import { op_node_fs_exists, op_node_fs_exists_sync } from "ext:core/ops";
|
|
|
|
import { pathFromURL } from "ext:deno_web/00_infra.js";
|
|
|
|
type ExistsCallback = (exists: boolean) => void;
|
|
|
|
/**
|
|
* TODO: Also accept 'path' parameter as a Node polyfill Buffer type once these
|
|
* are implemented. See https://github.com/denoland/deno/issues/3403
|
|
* Deprecated in node api
|
|
*/
|
|
export function exists(path: string | URL, callback: ExistsCallback) {
|
|
path = path instanceof URL ? pathFromURL(path) : path;
|
|
op_node_fs_exists(path).then(callback);
|
|
}
|
|
|
|
// The callback of fs.exists doesn't have standard callback signature.
|
|
// We need to provide special implementation for promisify.
|
|
// See https://github.com/nodejs/node/pull/13316
|
|
const kCustomPromisifiedSymbol = Symbol.for("nodejs.util.promisify.custom");
|
|
Object.defineProperty(exists, kCustomPromisifiedSymbol, {
|
|
value: (path: string | URL) => {
|
|
return new Promise((resolve) => {
|
|
exists(path, (exists) => resolve(exists));
|
|
});
|
|
},
|
|
});
|
|
|
|
/**
|
|
* TODO: Also accept 'path' parameter as a Node polyfill Buffer or URL type once these
|
|
* are implemented. See https://github.com/denoland/deno/issues/3403
|
|
*/
|
|
export function existsSync(path: string | URL): boolean {
|
|
path = path instanceof URL ? pathFromURL(path) : path;
|
|
return op_node_fs_exists_sync(path);
|
|
}
|