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denoland-deno/ext/node/polyfills/_fs/_fs_truncate.ts
Bartek Iwańczuk 72fe9bb470
refactor: rename InternalModuleLoader to ExtModuleLoader, use ext: scheme for snapshotted modules (#18041)
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
2023-03-08 12:44:54 +01:00

33 lines
1.1 KiB
TypeScript

// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { CallbackWithError } from "ext:deno_node/_fs/_fs_common.ts";
import { fromFileUrl } from "ext:deno_node/path.ts";
import { promisify } from "ext:deno_node/internal/util.mjs";
export function truncate(
path: string | URL,
lenOrCallback: number | CallbackWithError,
maybeCallback?: CallbackWithError,
) {
path = path instanceof URL ? fromFileUrl(path) : path;
const len: number | undefined = typeof lenOrCallback === "number"
? lenOrCallback
: undefined;
const callback: CallbackWithError = typeof lenOrCallback === "function"
? lenOrCallback
: maybeCallback as CallbackWithError;
if (!callback) throw new Error("No callback function supplied");
Deno.truncate(path, len).then(() => callback(null), callback);
}
export const truncatePromise = promisify(truncate) as (
path: string | URL,
len?: number,
) => Promise<void>;
export function truncateSync(path: string | URL, len?: number) {
path = path instanceof URL ? fromFileUrl(path) : path;
Deno.truncateSync(path, len);
}