build: migrate to obuild (rolldown)

Author: pi0

build.config.ts

@@ -1,29 +1,42 @@
 import { mkdir, writeFile, glob, rm } from "node:fs/promises";
 import { dirname, join } from "node:path";
-import { defineBuildConfig } from "unbuild";
+import { defineBuildConfig } from "obuild/config";
+
+const adapters = ["bun", "cloudflare", "deno", "node", "sse", "uws"];
+
+const servers = ["bun", "cloudflare", "default", "deno", "node"];
 
 export default defineBuildConfig({
-  rollup: {
-    inlineDependencies: true,
-  },
-  externals: [
-    "@cloudflare/workers-types",
-    "bun",
-    "@deno/types",
-    "uWebSockets.js",
-    "cloudflare:workers",
+  entries: [
+    {
+      type: "bundle",
+      input: [
+        "src/index.ts",
+        "src/websocket/native.ts",
+        "src/websocket/node.ts",
+        "src/websocket/sse.ts",
+        ...adapters.map((id) => `src/adapters/${id}.ts`),
+        ...servers.map((id) => `src/server/${id}.ts`),
+      ],
+      rolldown: {
+        external: [
+          "@cloudflare/workers-types",
+          "bun",
+          "@deno/types",
+          "uWebSockets.js",
+          "cloudflare:workers",
+        ],
+      },
+    },
   ],
   hooks: {
-    async "build:done"(ctx) {
-      for await (const file of glob("dist/**/*.d.ts")) {
-        await rm(file);
-      }
-
+    async end(ctx) {
+      // Generate declaration files for each entry point (old TS compatibility)
       const entries = Object.keys(ctx.pkg.exports || {})
         .filter((key) => key.startsWith("./"))
         .map((key) => key.slice(2));
       for (const entry of entries) {
-        const dst = join(ctx.options.rootDir, entry + ".d.ts");
+        const dst = join(ctx.pkgDir, entry + ".d.ts");
         await mkdir(dirname(dst), { recursive: true });
         let relativePath =
           ("..".repeat(entry.split("/").length - 1) || ".") + `/dist/${entry}`;

package.json

@@ -48,7 +48,7 @@
     "*.d.ts"
   ],
   "scripts": {
-    "build": "unbuild",
+    "build": "obuild",
     "dev": "vitest",
     "lint": "eslint --cache . && prettier -c src test",
     "lint:fix": "eslint --cache . --fix && prettier -w src test",
@@ -87,6 +87,7 @@
     "h3": "^2.0.1-rc.8",
     "jiti": "^2.6.1",
     "listhen": "^1.9.0",
+    "obuild": "^0.4.16",
     "prettier": "^3.8.0",
     "srvx": "^0.10.1",
     "typescript": "^5.9.3",