[FEATURE] generateFlexChangesBundle: Hide bundle input from build result

Flexibility changes files that are bundled are not part of the build
result anymore.

This feature is using the new resource tagging as per RFC 0008:
SAP/ui5-tooling#243

lib/tasks/bundlers/generateFlexChangesBundle.js

@@ -17,7 +17,7 @@ const flexChangesBundler = require("../../processors/bundlers/flexChangesBundler
  * @param {string} [parameters.options.namespace] Application Namespace
  * @returns {Promise<undefined>} Promise resolving with <code>undefined</code> once data has been written
  */
-module.exports = function({workspace, options: {namespace}}) {
+module.exports = async function({workspace, taskUtil, options: {namespace}}) {
 	// Use the given namespace if available, otherwise use no namespace
 	// (e.g. in case no manifest.json is present)
 	let pathPrefix = "";
@@ -63,34 +63,33 @@ module.exports = function({workspace, options: {namespace}}) {
 	}
 
 	log.verbose("Collecting flexibility changes");
-	return workspace.byGlob(`${pathPrefix}/changes/*.{change,variant,ctrl_variant,ctrl_variant_change,ctrl_variant_management_change}`)
-		.then((allResources) => {
-			if (allResources.length > 0) {
-				return readManifestMinUI5Version().then((version) => {
-					let hasFlexBundleVersion = false;
-					if (parseFloat(version) >= 1.73) {
-						hasFlexBundleVersion = true;
-					}
-					return flexChangesBundler({
-						resources: allResources,
-						options: {
-							pathPrefix,
-							hasFlexBundleVersion
-						}
-					});
-				});
+	const allResources = await workspace.byGlob(
+		`${pathPrefix}/changes/*.{change,variant,ctrl_variant,ctrl_variant_change,ctrl_variant_management_change}`);
+	if (allResources.length > 0) {
+		const version = await readManifestMinUI5Version();
+		let hasFlexBundleVersion = false;
+		if (parseFloat(version) >= 1.73) {
+			hasFlexBundleVersion = true;
+		}
+		const processedResources = await flexChangesBundler({
+			resources: allResources,
+			options: {
+				pathPrefix,
+				hasFlexBundleVersion
 			}
-			return [];
-		})
-		.then((processedResources) => {
-			return Promise.all(processedResources.map((resource) => {
-				log.verbose("Writing flexibility changes bundle");
-				return workspace.write(resource);
-			})).then(async () => {
-				// Add the sap.ui.fl dependency if a bundle has been created
-				if (processedResources.length > 0) {
-					await updateFLdependency();
-				}
-			});
 		});
+		await Promise.all(processedResources.map((resource) => {
+			log.verbose("Writing flexibility changes bundle");
+			return workspace.write(resource);
+		}));
+		// Add the sap.ui.fl dependency if a bundle has been created
+		if (processedResources.length > 0) {
+			await updateFLdependency();
+		}
+
+		// Do not write bundled source files to build result
+		allResources.forEach((resource) => {
+			taskUtil.setTag(resource, taskUtil.STANDARD_TAGS.HideFromBuildResult);
+		});
+	}
 };

lib/types/application/ApplicationBuilder.js

@@ -47,6 +47,7 @@ class ApplicationBuilder extends AbstractBuilder {
 			const generateFlexChangesBundle = getTask("generateFlexChangesBundle").task;
 			return generateFlexChangesBundle({
 				workspace: resourceCollections.workspace,
+				taskUtil,
 				options: {
 					namespace: project.metadata.namespace
 				}