handle resolve and reject of promises

gulp/compile.js

@@ -13,42 +13,26 @@ module.exports = function compile() {
   } else {
     console.log(`local build: ${packageJson.version}`);
   }
-  return new Promise((resolve) => {
+  return new Promise((resolve, reject) => {
     fs.emptyDirSync(distdir);
-
     const tasks = find.fileSync(/tasks[/\\].*[/\\]index.ts$/, "src");
-    tasks.map((task, idx) =>{
+
+    const promises = tasks.map((task, idx) => {
       var baseName = path.basename(path.dirname(task));
       var taskName = path.basename(path.join(task, "../.."))
       const taskDistDir = path.resolve(distdir, "tasks", taskName, baseName);
       console.info(`packaging ${idx} "${task}" into ./dist folder ...`);
-      esbuild.buildSync({
+      esbuild.build({
         entryPoints: [`./${task}`],
         outfile: path.join(taskDistDir, "index.js"),
         platform: "node",
-    }).errors.forEach(error => console.error(error));
-    })
-  });
-};
+      }).catch((error) => { console.error(error); reject(error); })
+    });
 
-// function onBuild(done) {
-//   return function (err, result) {
-//     if (err) {
-//       console.error(`Webpack error:\n${err}`);
-//       if (done) {
-//         done();
-//       }
-//     } else {
-//       result.stats.forEach((stats) => {
-//         Object.keys(stats.compilation.assets).forEach(function (key) {
-//           console.log(`Webpack: output ${key}`);
-//         });
-//         const size = statSync(path.join(stats.compilation.outputOptions.path, stats.compilation.outputOptions.filename)).size;
-//         console.log(`Webpack: finished, size = ${size}`);
-//       });
-//       if (done) {
-//         done();
-//       }
-//     }
-//   };
-// }
+    Promise.all(promises).then(() => {
+      message = "all tasks packaged into ./dist folder";
+      console.log(message);
+      resolve(message);
+    });
+  });
+}