refactor: update to yarn@v4, migrate to vitest, switch to typescript, add tests

.gitignore

@@ -5,3 +5,11 @@ node_modules
 example/dist
 example/node_modules
 dump.rdb
+.yarn/install-state.gz
+dist
+coverage
+*.log
+.DS_Store
+.vscode
+*.tsbuildinfo
+.claude

.yarnrc.yml

@@ -0,0 +1,3 @@
+nodeLinker: node-modules
+
+yarnPath: .yarn/releases/yarn-4.10.3.cjs

bin/test-update-server.ts

@@ -0,0 +1,10 @@
+#!/usr/bin/env node
+
+import { createServer } from "../test/helpers/create-server.js";
+
+async function main() {
+  const { address } = await createServer();
+  console.log(`Server running at ${address}`);
+}
+
+main();

bin/update-server.js → bin/update-server.ts

@@ -1,25 +1,24 @@
 #!/usr/bin/env node
 
-"use strict";
+import { config } from "dotenv-safe";
+import assert from "node:assert";
+import redis from "redis";
+import ms, { StringValue } from "ms";
+import Redlock, { CompatibleRedisClient } from "redlock";
+import Updates from "../src/updates.js";
 
-require("dotenv-safe").config();
+config();
 
 process.title = "update-server";
 
-const Updates = require("../src/updates");
-const redis = require("redis");
-const ms = require("ms");
-const assert = require("assert");
-const Redlock = require("redlock");
-
 //
 // Args
 //
 
 const {
   GH_TOKEN: token,
   REDIS_URL: redisUrl = "redis://localhost:6379",
-  PORT: port = 3000,
+  PORT: port = "3000",
   CACHE_TTL: cacheTTL = "15m",
 } = process.env;
 assert(token, "GH_TOKEN required");
@@ -31,10 +30,6 @@ async function getCache() {
   const fixedRedisUrl = redisUrl.replace("redis://h:", "redis://:");
   const client = redis.createClient({
     url: fixedRedisUrl,
-    // Needed for compatibility with Redlock. However, it also requires all "modern" commands
-    // to be prefixed with `client.v4`.
-    // See also: https://github.com/redis/node-redis/blob/master/docs/v3-to-v4.md#legacy-mode
-    legacyMode: true,
     socket: {
       tls: true,
       rejectUnauthorized: false,
@@ -46,24 +41,29 @@ async function getCache() {
 
   client.on("error", (err) => console.log("Redis Client Error", err));
 
-  const redlock = new Redlock([client], {
+  const redlock = new Redlock([client.legacy() as CompatibleRedisClient], {
     retryDelay: ms("10s"),
   });
 
   const cache = {
-    async get(key) {
-      const json = await client.v4.get(key);
-      return json && JSON.parse(json);
+    async get(key: string) {
+      const json = await client.get(key);
+      return json && typeof json === "string" && JSON.parse(json);
     },
-    async set(key, value) {
+    async set(key: string, value: any) {
       const json = JSON.stringify(value);
 
-      await client.v4.set(key, json, {
-        EX: ms(cacheTTL) / 1000,
+      await client.set(key, json, {
+        EX: Math.floor(ms(cacheTTL as StringValue) / 1000),
       });
     },
-    async lock(resource) {
-      return redlock.lock(`locks:${resource}`, ms("1m"));
+    async lock(resource: string) {
+      const result = await redlock.lock([`locks:${resource}`], ms("1m"));
+      return {
+        async unlock() {
+          await result.unlock();
+        },
+      };
     },
   };
 
@@ -76,7 +76,7 @@ async function getCache() {
 async function main() {
   const cache = await getCache();
   const updates = new Updates({ token, cache });
-  updates.listen(port, () => {
+  updates.listen(Number(port), () => {
     console.log(`http://localhost:${port}`);
   });
 }

package.json

@@ -1,29 +1,46 @@
 {
   "name": "update.electronjs.org",
   "private": true,
+  "type": "module",
   "scripts": {
-    "start": "nodemon bin/update-server.js",
-    "start-test-server": "cross-env NODE_ENV=test nodemon bin/test-update-server.js",
-    "lint": "prettier --check '**/*.js'",
-    "prettier": "prettier --write '**/*.js'",
-    "test": "npm run lint && cross-env NODE_ENV=test nyc tap test/*.js"
+    "build": "tsc",
+    "start": "node dist/bin/update-server.js",
+    "start-test-server": "cross-env NODE_ENV=test node dist/bin/test-update-server.js",
+    "lint": "prettier --check '**/*.{js,ts}' --ignore-path .gitignore",
+    "prettier": "prettier --write '**/*.{js,ts}' --ignore-path .gitignore",
+    "typecheck": "tsc --noEmit",
+    "test": "npm run lint && npm run typecheck && cross-env NODE_ENV=test vitest run",
+    "test:watch": "cross-env NODE_ENV=test vitest watch",
+    "test:ui": "cross-env NODE_ENV=test vitest --ui",
+    "test:coverage": "cross-env NODE_ENV=test vitest run --coverage"
   },
   "dependencies": {
-    "dotenv-safe": "^8.2.0",
+    "dotenv": "^17.2.3",
+    "dotenv-safe": "^9.1.0",
     "ms": "^2.1.3",
     "pino": "^8.12.1",
-    "redis": "^4.6.6",
-    "redlock": "^3.1.2",
+    "redis": "^5.8.3",
+    "redlock": "^4.2.0",
     "request-ip": "^3.3.0",
     "semver": "^7.5.2"
   },
   "devDependencies": {
+    "@tsconfig/node22": "^22.0.2",
+    "@types/dotenv-safe": "^9.1.0",
+    "@types/ms": "^2.1.0",
+    "@types/node": "^24.6.2",
+    "@types/node-fetch": "^2.6.13",
+    "@types/redlock": "^4.0.7",
+    "@types/request-ip": "^0.0.41",
+    "@types/semver": "^7.7.1",
+    "@vitest/coverage-v8": "^3.2.4",
+    "@vitest/ui": "^3.2.4",
     "cross-env": "^7.0.3",
     "nock": "^13.3.1",
     "node-fetch": "2.6.9",
-    "nodemon": "^3.0.1",
-    "nyc": "^15.1.0",
     "prettier": "^2.8.8",
-    "tap": "^16.3.4"
-  }
+    "typescript": "^5.9.3",
+    "vitest": "^3.2.4"
+  },
+  "packageManager": "yarn@4.10.3+sha512.c38cafb5c7bb273f3926d04e55e1d8c9dfa7d9c3ea1f36a4868fa028b9e5f72298f0b7f401ad5eb921749eb012eb1c3bb74bf7503df3ee43fd600d14a018266f"
 }

src/asset-platform.js → src/asset-platform.ts

@@ -1,6 +1,6 @@
-const { PLATFORM_ARCH } = require("./constants");
+import { PLATFORM_ARCH, type PlatformArch } from "./constants.js";
 
-const assetPlatform = (fileName) => {
+export const assetPlatform = (fileName: string): PlatformArch | false => {
   if (/.*-(mac|darwin|osx).*\.zip$/i.test(fileName)) {
     if (/-arm64/.test(fileName)) return PLATFORM_ARCH.DARWIN_ARM64;
     if (/-universal/.test(fileName)) return PLATFORM_ARCH.DARWIN_UNIVERSAL;
@@ -28,7 +28,3 @@ const assetPlatform = (fileName) => {
 
   return false;
 };
-
-module.exports = {
-  assetPlatform,
-};

src/constants.ts

@@ -0,0 +1,21 @@
+export const PLATFORM = {
+  WIN32: "win32",
+  DARWIN: "darwin",
+} as const;
+
+export const PLATFORM_ARCH = {
+  DARWIN_X64: "darwin-x64",
+  DARWIN_ARM64: "darwin-arm64",
+  DARWIN_UNIVERSAL: "darwin-universal",
+  WIN_X64: "win32-x64",
+  WIN_IA32: "win32-ia32",
+  WIN_ARM64: "win32-arm64",
+} as const;
+
+export type Platform = (typeof PLATFORM)[keyof typeof PLATFORM];
+export type PlatformArch = (typeof PLATFORM_ARCH)[keyof typeof PLATFORM_ARCH];
+
+export const ENV = process.env.NODE_ENV || "development";
+
+export const PLATFORM_ARCHS: readonly PlatformArch[] =
+  Object.values(PLATFORM_ARCH);