Log errors from transpiling

vendor/browser-es-module-loader/dist/babel-worker.js

@@ -126144,23 +126144,30 @@ var babelPresetEnv = require('@babel/preset-env');
 
 self.onmessage = function (evt) {
   // transform source with Babel
-  var output = babelTransform(evt.data.source, {
-    compact: false,
-    filename: evt.data.key + '!transpiled',
-    sourceFileName: evt.data.key,
-    moduleIds: false,
-    sourceMaps: 'inline',
-    babelrc: false,
-    plugins: [babelTransformDynamicImport, babelTransformModulesSystemJS],
-    presets: [[babelPresetEnv, {
-      targets: 'ie >= 11'
-    }]]
-  });
-  self.postMessage({
-    key: evt.data.key,
-    code: output.code,
-    source: evt.data.source
-  });
+  try {
+    var output = babelTransform(evt.data.source, {
+      compact: false,
+      filename: evt.data.key + '!transpiled',
+      sourceFileName: evt.data.key,
+      moduleIds: false,
+      sourceMaps: 'inline',
+      babelrc: false,
+      plugins: [babelTransformDynamicImport, babelTransformModulesSystemJS],
+      presets: [[babelPresetEnv, {
+        targets: 'ie >= 11'
+      }]]
+    });
+    self.postMessage({
+      key: evt.data.key,
+      code: output.code,
+      source: evt.data.source
+    });
+  } catch (err) {
+    self.postMessage({
+      key: evt.data.key,
+      error: err.toString()
+    });
+  }
 };
 
 },{"@babel/core":32,"@babel/plugin-syntax-dynamic-import":136,"@babel/plugin-transform-modules-systemjs":164,"@babel/preset-env":187,"core-js/stable":746,"regenerator-runtime/runtime":971}]},{},[1008]);

vendor/browser-es-module-loader/dist/browser-es-module-loader.js

@@ -1421,7 +1421,11 @@
   var babelWorker = new WorkerPool('babel-worker.js', 3);
   babelWorker.onmessage = function (evt) {
       var promFuncs = promiseMap.get(evt.data.key);
-      promFuncs.resolve(evt.data);
+      if (evt.data.error) {
+        promFuncs.reject(evt.data);
+      } else {
+        promFuncs.resolve(evt.data);
+      }
       promiseMap.delete(evt.data.key);
   };
 

vendor/browser-es-module-loader/genworker.js

@@ -10,4 +10,5 @@ browserify("src/babel-worker.js")
     ignore: [ "../../node_modules/core-js" ]
   })
   .bundle()
+  .on('error', err => { console.error(err) })
   .pipe(fs.createWriteStream("dist/babel-worker.js"));

vendor/browser-es-module-loader/src/babel-worker.js

@@ -9,16 +9,20 @@ var babelPresetEnv = require('@babel/preset-env');
 
 self.onmessage = function (evt) {
     // transform source with Babel
-    var output = babelTransform(evt.data.source, {
-      compact: false,
-      filename: evt.data.key + '!transpiled',
-      sourceFileName: evt.data.key,
-      moduleIds: false,
-      sourceMaps: 'inline',
-      babelrc: false,
-      plugins: [babelTransformDynamicImport, babelTransformModulesSystemJS],
-      presets: [ [ babelPresetEnv, { targets: 'ie >= 11' } ] ],
-    });
+    try {
+      var output = babelTransform(evt.data.source, {
+        compact: false,
+        filename: evt.data.key + '!transpiled',
+        sourceFileName: evt.data.key,
+        moduleIds: false,
+        sourceMaps: 'inline',
+        babelrc: false,
+        plugins: [babelTransformDynamicImport, babelTransformModulesSystemJS],
+        presets: [ [ babelPresetEnv, { targets: 'ie >= 11' } ] ],
+      });
 
-    self.postMessage({key: evt.data.key, code: output.code, source: evt.data.source});
+      self.postMessage({key: evt.data.key, code: output.code, source: evt.data.source});
+    } catch (err) {
+      self.postMessage({key: evt.data.key, error: err.toString()});
+    }
 };

vendor/browser-es-module-loader/src/browser-es-module-loader.js

@@ -221,7 +221,11 @@ var promiseMap = new Map();
 var babelWorker = new WorkerPool('babel-worker.js', 3);
 babelWorker.onmessage = function (evt) {
     var promFuncs = promiseMap.get(evt.data.key);
-    promFuncs.resolve(evt.data);
+    if (evt.data.error) {
+      promFuncs.reject(evt.data);
+    } else {
+      promFuncs.resolve(evt.data);
+    }
     promiseMap.delete(evt.data.key);
 };