Migrate from unbuild to obuild (#9243)

Author: vicb

.changeset/purple-tools-change.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/unenv-preset": patch
+---
+
+Migrate from unbuild to obuild

packages/unenv-preset/build.config.ts

@@ -1,12 +1,5 @@
-import { defineBuildConfig } from "unbuild";
+import { defineBuildConfig } from "obuild/config";
 
 export default defineBuildConfig({
-	declaration: true,
-	rollup: {
-		cjsBridge: true,
-	},
-	entries: [
-		"src/index",
-		{ input: "src/runtime/", outDir: "dist/runtime", format: "esm" },
-	],
+	entries: ["src/runtime/:dist/runtime", "src/index.ts"],
 });

packages/unenv-preset/package.json

@@ -38,16 +38,16 @@
 		"dist"
 	],
 	"scripts": {
-		"build": "unbuild",
+		"build": "obuild",
 		"check:lint": "eslint",
 		"check:type": "tsc --noEmit",
 		"test:ci": "vitest run",
 		"test:watch": "vitest"
 	},
 	"devDependencies": {
 		"@types/node-unenv": "npm:@types/node@^22.14.0",
+		"obuild": "^0.2.1",
 		"typescript": "catalog:default",
-		"unbuild": "^3.2.0",
 		"undici": "catalog:default",
 		"vitest": "catalog:default",
 		"wrangler": "workspace:*"

packages/unenv-preset/src/preset.ts

@@ -56,7 +56,7 @@ export const cloudflare: Preset = {
 	meta: {
 		name: "unenv:cloudflare",
 		version,
-		url: __filename,
+		url: import.meta.url,
 	},
 	alias: {
 		// `nodeCompatModules` are implemented in workerd.