将输出流传输到本地文件

Deno Sandboxes provide a sandboxed environment for evaluating JavaScript code. This is useful for evaluating code that is not trusted or for testing code that is not safe to run in the main runtime.

您可以在沙箱中将输出流传输到本地文件。

child.stdout 是一个 Web ReadableStream。

在 Node 环境中，将 Node 的 fs.WriteStream 转换为 Web 的 WritableStream 以实现高效的管道传输。

import { Sandbox } from "@deno/sandbox";
import fs from "node:fs";
import { Writable } from "node:stream";

await using sandbox = await Sandbox.create();

// 在沙箱中创建一个大文件
await sandbox.writeTextFile("big.txt", "#".repeat(5_000_000));

// 将其流式传输到本地文件
const child = await sandbox.spawn("cat", {
  args: ["big.txt"],
  stdout: "piped",
});
const file = fs.createWriteStream("./big-local-copy.txt");
await child.stdout.pipeTo(Writable.toWeb(file));

const status = await child.status;
console.log("完成:", status);

For more information about Sandboxes, see the Sandboxes documentation.

将输出流传输到本地文件

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