clean up manifest step more

index.mjs

@@ -129,28 +129,21 @@ export function buildConfig ({
 			},
 			plugins: [
 				{
+					// emit other assets
 					buildStart () {
-						assets.forEach(absolutePath => {
-							this.emitFile({
-								type: 'asset',
-								fileName: getOutputFilename(absolutePath),
-								source: readFileSync(absolutePath),
-							});
-						});
-					},
-					load (id) {
-						if (id === manifestPath) {
-							// throwaway contents, replaced later
-							return 'debugger;';
-						}
-						return null;
-					},
-					renderChunk (code, chunk) {
-						if (chunk.facadeModuleId !== manifestPath) {
-							return null;
-						}
-						return JSON.stringify(manifestContent, null, '\t');
+						assets.forEach(absolutePath => this.emitFile({
+							type: 'asset',
+							fileName: getOutputFilename(absolutePath),
+							source: readFileSync(absolutePath),
+						}));
 					},
+
+					// hacks to make sure the manifest is emitted as bare JSON
+					load: id => id === manifestPath ? 'debugger;' : null,
+					renderChunk: (_, chunk) =>
+						chunk.facadeModuleId === manifestPath
+							? JSON.stringify(manifestContent, null, '\t')
+							: null,
 				},
 			],
 		},