refactor(project): WatchHandler emit error event

Author: RandomByte

packages/project/lib/build/ProjectBuilder.js

@@ -318,7 +318,7 @@ class ProjectBuilder {
 			this.#log.info(`Update succeeded in ${this._getElapsedTime(startTime)}`);
 		} catch (err) {
 			this.#log.error(`Update failed`);
-			this.#log.error(err);
+			throw err;
 		} finally {
 			this._deregisterCleanupSigHooks(cleanupSigHooks);
 			await this._executeCleanupTasks();

packages/project/lib/build/helpers/WatchHandler.js

@@ -94,8 +94,13 @@ class WatchHandler extends EventEmitter {
 			this.#sourceChanges = new Map();
 
 			this.#updateInProgress = true;
-			await this.#handleResourceChanges(sourceChanges);
-			this.#updateInProgress = false;
+			try {
+				await this.#handleResourceChanges(sourceChanges);
+			} catch (err) {
+				this.emit("error", err);
+			} finally {
+				this.#updateInProgress = false;
+			}
 
 			if (this.#sourceChanges.size > 0) {
 				// New changes have occurred during processing, trigger queue again