chore(unenv-preset): Add .cjs output for the preset (#7721)

Author: vicb

.changeset/shy-flies-float.md

@@ -0,0 +1,5 @@
+---
+"@cloudflare/unenv-preset": patch
+---
+
+chore(unenv-preset): Add .cjs output for the preset

packages/unenv-preset/build.config.ts

@@ -1,7 +1,13 @@
 import { defineBuildConfig } from "unbuild";
 
 export default defineBuildConfig({
+	declaration: true,
+	rollup: {
+		emitCJS: true,
+		cjsBridge: true,
+	},
 	entries: [
-		{ input: "src/", outDir: "dist/src", format: "esm", declaration: true },
+		"src/index",
+		{ input: "src/runtime/", outDir: "dist/runtime", format: "esm" },
 	],
 });

packages/unenv-preset/package.json

@@ -24,18 +24,19 @@
 	"type": "module",
 	"exports": {
 		".": {
-			"types": "./dist/src/index.d.ts",
-			"import": "./dist/src/index.mjs"
+			"types": "./dist/index.d.ts",
+			"require": "./dist/index.cjs",
+			"import": "./dist/index.mjs"
 		},
 		"./runtime/*": {
-			"types": "./dist/src/runtime/*.d.ts",
-			"import": "./dist/src/runtime/*.mjs"
+			"types": "./dist/runtime/*.d.ts",
+			"import": "./dist/runtime/*.mjs"
 		}
 	},
-	"main": "./dist/src/index.mjs",
-	"types": "./dist/src/index.d.ts",
+	"main": "./dist/index.cjs",
+	"types": "./dist/index.d.ts",
 	"files": [
-		"dist/src"
+		"dist"
 	],
 	"scripts": {
 		"build": "unbuild",