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其他模块
Perry 支持的额外 npm 包及 Node.js API。
sharp（图像处理）
typescript
import sharp from "sharp";
await sharp("input.jpg")
.resize(300, 200)
.toFile("output.png");cheerio（HTML 解析）
typescript
import cheerio from "cheerio";
const html = "<html><body><h1>Hello</h1><p>World</p></body></html>";
const $ = cheerio.load(html);
console.log($("h1").text()); // "Hello"nodemailer（邮件发送）
typescript
import nodemailer from "nodemailer";
const transporter = nodemailer.createTransport({
host: "smtp.example.com",
port: 587,
auth: { user: "user", pass: "pass" },
});
await transporter.sendMail({
from: "sender@example.com",
to: "recipient@example.com",
subject: "Hello from Perry",
text: "This email was sent from a compiled TypeScript binary!",
});zlib（数据压缩）
typescript
import zlib from "zlib";
const compressed = zlib.gzipSync("Hello, World!");
const decompressed = zlib.gunzipSync(compressed);cron（任务调度）
typescript
import { CronJob } from "cron";
const job = new CronJob("*/5 * * * *", () => {
console.log("Runs every 5 minutes");
});
job.start();worker_threads（工作线程）
typescript
import { Worker, parentPort, workerData } from "worker_threads";
if (parentPort) {
// 工作线程
const data = workerData;
parentPort.postMessage({ result: data.value * 2 });
} else {
// 主线程
const worker = new Worker("./worker.ts", {
workerData: { value: 21 },
});
worker.on("message", (msg) => {
console.log(msg.result); // 42
});
}commander（CLI 解析）
typescript
import { Command } from "commander";
const program = new Command();
program.name("my-cli").version("1.0.0").description("My CLI tool");
program
.command("serve")
.option("-p, --port <number>", "Port number")
.option("--verbose", "Verbose output")
.action((options) => {
console.log(`Starting server on port ${options.port}`);
});
program.parse(process.argv);decimal.js（高精度计算）
typescript
import Decimal from "decimal.js";
const a = new Decimal("0.1");
const b = new Decimal("0.2");
const sum = a.plus(b); // 精确等于 0.3（无浮点运算误差）
sum.toFixed(2); // "0.30"
sum.toNumber(); // 0.3
a.times(b); // 0.02
a.div(b); // 0.5
a.pow(10); // 1e-10
a.sqrt(); // 0.316...lru-cache
typescript
import LRUCache from "lru-cache";
const cache = new LRUCache(100); // 最大 100 个条目
cache.set("key", "value");
cache.get("key"); // "value"
cache.has("key"); // true
cache.delete("key");
cache.clear();child_process（子进程）
typescript
import { spawnBackground, getProcessStatus, killProcess } from "child_process";
// 启动后台进程
const { pid, handleId } = spawnBackground("sleep", ["10"], "/tmp/log.txt");
// 检查进程是否仍在运行
const status = getProcessStatus(handleId);
console.log(status.alive); // true
// 终止进程
killProcess(handleId);