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denoland-deno/ext/node/polyfills/_fs/_fs_ftruncate.ts
Bartek Iwańczuk 0b0fb94ce2
fix(fs): instanceof check for Deno.FsFile (#22121)
Regression caused by https://github.com/denoland/deno/pull/22072.

I added a relevant test so we don't regress again.

Fixes https://github.com/denoland/deno/issues/22115
2024-01-25 23:51:29 +01:00

31 lines
995 B
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 { CallbackWithError } from "ext:deno_node/_fs/_fs_common.ts";
import { FsFile } from "ext:deno_fs/30_fs.js";
export function ftruncate(
fd: number,
lenOrCallback: number | CallbackWithError,
maybeCallback?: CallbackWithError,
) {
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");
new FsFile(fd, Symbol.for("Deno.internal.FsFile")).truncate(len).then(
() => callback(null),
callback,
);
}
export function ftruncateSync(fd: number, len?: number) {
new FsFile(fd, Symbol.for("Deno.internal.FsFile")).truncateSync(len);
}