dedupe output options

rollup.config.mjs

@@ -42,7 +42,9 @@ export default [
 			index: "src/runtime/index.ts",
 			ssr: "src/runtime/ssr.ts",
 		},
-		output: ["esm", "cjs"].map((format) => {
+		output: ["esm", "cjs"].map(
+			/** @returns {import('rollup').OutputOptions} */
+			(format) => {
 				const ext = format === "esm" ? "mjs" : "cjs";
 				return {
 					entryFileNames: (entry) => {
@@ -53,13 +55,17 @@ export default [
 							return `${entry.name}/index.${ext}`;
 						}
 					},
+
 					manualChunks: (id) => {
-					if (id.endsWith("internal/index.ts")) return "internal";
+						if (id.endsWith("internal/index.ts")) {
+							return "internal";
+						}
 					},
 					format,
 					dir: ".",
 				};
-		}),
+			}
+		),
 		plugins: [
 			replace({
 				preventAssignment: true,
@@ -67,19 +73,19 @@ export default [
 					__VERSION__: pkg.version,
 				},
 			}),
-			,
 			ts_plugin,
 			{
 				writeBundle(_options, bundle) {
 					for (const [_, entry] of Object.entries(bundle)) {
 						const dir = entry.name;
 						if (!entry.isEntry || !runtime_entrypoints[dir]) continue;
+
 						if (dir === "internal") {
 							const mod = bundle[`internal/index.mjs`];
 							if (mod) {
 								fs.writeFileSync(
 									"src/compiler/compile/internal_exports.ts",
-									`// This file is automatically generated` +
+									`// This file is automatically generated\n` +
 										`export default new Set(${JSON.stringify(mod.exports)});`
 								);
 							}
@@ -89,7 +95,7 @@ export default [
 							`${dir}/package.json`,
 							JSON.stringify(
 								{
-									main: "./index",
+									main: "./index.cjs",
 									module: "./index.mjs",
 									types: "./index.d.ts",
 								},