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d43b43ca78
Instead of using core/snapshot_creator.rs, instead two crates are introduced which allow building the snapshot during build.rs. Rollup is removed and replaced with our own bundler. This removes the Node build dependency. Modules in //js now use Deno-style imports with file extensions, rather than Node style extensionless imports. This improves incremental build time when changes are made to //js files by about 40 seconds.
34 lines
902 B
TypeScript
34 lines
902 B
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import { sendSync, sendAsync } from "./dispatch_json.ts";
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import * as dispatch from "./dispatch.ts";
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function coerceLen(len?: number): number {
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if (!len) {
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return 0;
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}
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if (len < 0) {
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return 0;
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}
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return len;
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}
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/** Truncates or extends the specified file synchronously, updating the size of
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* this file to become size.
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*
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* Deno.truncateSync("hello.txt", 10);
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*/
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export function truncateSync(name: string, len?: number): void {
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sendSync(dispatch.OP_TRUNCATE, { name, len: coerceLen(len) });
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}
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/**
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* Truncates or extends the specified file, updating the size of this file to
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* become size.
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*
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* await Deno.truncate("hello.txt", 10);
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*/
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export async function truncate(name: string, len?: number): Promise<void> {
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await sendAsync(dispatch.OP_TRUNCATE, { name, len: coerceLen(len) });
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}
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