Enable Async Await

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "ui5ts.manifestlocation": "webapp\\manifest.json"
+}

lib/transpile.js

@@ -1,6 +1,9 @@
 const path = require("path");
 const babel = require("@babel/core");
 const log = require("@ui5/logger").getLogger("builder:customtask:transpile");
+const pathregen = require("regenerator-runtime/path").path;
+const resourceFactory = require("@ui5/fs").resourceFactory;
+const fs = require('fs');
 
 /**
  * Task to transpiles ES6 code into ES5 code.
@@ -13,22 +16,53 @@ const log = require("@ui5/logger").getLogger("builder:customtask:transpile");
  * @param {string} [parameters.options.configuration] Task configuration if given in ui5.yaml
  * @returns {Promise<undefined>} Promise resolving with undefined once data has been written
  */
-module.exports = function({workspace, dependencies, options}) {
-	return workspace.byGlob("/**/*.js").then((resources) => {
-        return Promise.all(resources.map((resource) => {
-            return resource.getString().then((value) => {
-                log.info("Transpiling file " + resource.getPath());
-                return babel.transformAsync(value, {
-                    sourceMap: false,
-                    presets: ["@babel/preset-env"],
-                    plugins: [["@babel/plugin-transform-modules-commonjs", {
-                        "strictMode": false 
-                    }]]
-                });
-            }).then((result) => {
-                resource.setString(result.code);
-                workspace.write(resource);
-            });
-        }));
+module.exports = async function ({
+    workspace,
+    dependencies,
+    options
+}) {
+    let resources = await workspace.byGlob("/**/*.js");
+    //get path of Component
+    const componentResource = resources.find((jsResource) => jsResource.getPath().includes("Component.js"));
+    const toPath = componentResource.getPath();
+    const pathPrefix = toPath.replace("Component.js", "");
+    //get path of regenerator in node_modules
+    const pathRegenerator = pathregen.substr(pathregen.indexOf("node_modules") + 13).replace("\\", "/");
+    //build full path for regenerator in current project
+    const virtualPathRegenerator = pathPrefix + pathRegenerator;
+    //get code of regenereator
+    const runtimeCode = fs.readFileSync(pathregen, 'utf8');
+    //create resource
+    const runtimeResource = resourceFactory.createResource({
+        path: virtualPathRegenerator,
+        string: runtimeCode
     });
+    //save regenerator to workspace
+    await workspace.write(runtimeResource);
+
+    //add require regenerator for development prupose
+    let componentSource = await componentResource.getString();
+    const requirePath = virtualPathRegenerator.replace("/resources/","").replace(".js","");
+    componentSource = "// development mode: load the regenerator runtime synchronously\nif(!window.regeneratorRuntime){sap.ui.requireSync(\""+requirePath+"\")}" + componentSource;
+    componentResource.setString(componentSource);
+    await workspace.write(componentResource);
+
+    resources = await workspace.byGlob("/**/*.js");
+    return await Promise.all(resources.map((resource) => {
+        return resource.getString().then((value) => {
+            log.info("Transpiling file " + resource.getPath());
+            return babel.transformAsync(value, {
+                sourceMap: false,
+                presets: ["@babel/preset-env"],
+                plugins: [
+                    ["@babel/plugin-transform-modules-commonjs", {
+                        "strictMode": false
+                    }]
+                ]
+            });
+        }).then((result) => {
+            resource.setString(result.code);
+            workspace.write(resource);
+        });
+    }));
 };