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37 lines
1.2 KiB
TypeScript
37 lines
1.2 KiB
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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// TODO(petamoriken): enable prefer-primordials for node polyfills
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// deno-lint-ignore-file prefer-primordials
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import { CallbackWithError } from "ext:deno_node/_fs/_fs_common.ts";
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import { pathFromURL } from "ext:deno_web/00_infra.js";
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import { promisify } from "ext:deno_node/internal/util.mjs";
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export function truncate(
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path: string | URL,
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lenOrCallback: number | CallbackWithError,
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maybeCallback?: CallbackWithError,
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) {
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path = path instanceof URL ? pathFromURL(path) : path;
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const len: number | undefined = typeof lenOrCallback === "number"
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? lenOrCallback
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: undefined;
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const callback: CallbackWithError = typeof lenOrCallback === "function"
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? lenOrCallback
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: maybeCallback as CallbackWithError;
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if (!callback) throw new Error("No callback function supplied");
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Deno.truncate(path, len).then(() => callback(null), callback);
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}
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export const truncatePromise = promisify(truncate) as (
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path: string | URL,
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len?: number,
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) => Promise<void>;
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export function truncateSync(path: string | URL, len?: number) {
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path = path instanceof URL ? pathFromURL(path) : path;
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Deno.truncateSync(path, len);
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}
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