use rollup watch when in watch mode

Fixes #72
jlmakes · Nov 22, 2021 · de386a6 · de386a6
1 parent a6f5b78
commit de386a6
Showing 1 changed file with 10 additions and 2 deletions.
diff --git a/lib/index.js b/lib/index.js
@@ -67,12 +67,20 @@ function createPreprocessor(preconfig, config, emitter, logger) {
 				options.output.dir = path.dirname(originalPath)
 			}
 
-			let bundle = await rollup.rollup(options)
-			cache.set(originalPath, bundle.cache)
+			let bundle;
+			options.cache = false;
 
 			if (watcher) {
+				const watch = await rollup.watch(options);
+				bundle = await new Promise(res => watch.on('event', ( { result, code }) => {
+					if (code === 'BUNDLE_END') return res(result);
+				}));
+
 				let [entry, ...dependencies] = bundle.watchFiles
 				watcher.add(entry, dependencies)
+			} else {
+				bundle = await rollup.rollup(options)
+				cache.set(originalPath, bundle.cache)
 			}
 
 			log.info('Generating bundle for ./%s', location)