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72fe9bb470
This commit renames "deno_core::InternalModuleLoader" to "ExtModuleLoader" and changes the specifiers used by the modules loaded from this loader to "ext:". "internal:" scheme was really ambiguous and it's more characters than "ext:", which should result in slightly smaller snapshot size. Closes https://github.com/denoland/deno/issues/18020
40 lines
1.4 KiB
TypeScript
40 lines
1.4 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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import { fromFileUrl } from "ext:deno_node/path.ts";
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type ExistsCallback = (exists: boolean) => void;
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/**
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* TODO: Also accept 'path' parameter as a Node polyfill Buffer type once these
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* are implemented. See https://github.com/denoland/deno/issues/3403
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* Deprecated in node api
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*/
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export function exists(path: string | URL, callback: ExistsCallback) {
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path = path instanceof URL ? fromFileUrl(path) : path;
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Deno.lstat(path).then(() => callback(true), () => callback(false));
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}
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// The callback of fs.exists doesn't have standard callback signature.
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// We need to provide special implementation for promisify.
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// See https://github.com/nodejs/node/pull/13316
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const kCustomPromisifiedSymbol = Symbol.for("nodejs.util.promisify.custom");
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Object.defineProperty(exists, kCustomPromisifiedSymbol, {
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value: (path: string | URL) => {
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return new Promise((resolve) => {
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exists(path, (exists) => resolve(exists));
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});
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},
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});
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/**
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* TODO: Also accept 'path' parameter as a Node polyfill Buffer or URL type once these
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* are implemented. See https://github.com/denoland/deno/issues/3403
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*/
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export function existsSync(path: string | URL): boolean {
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path = path instanceof URL ? fromFileUrl(path) : path;
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try {
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Deno.lstatSync(path);
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return true;
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} catch (_err) {
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return false;
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}
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}
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