fix(all): improved error reporting

closes #504

lib/build/bundle.js

@@ -259,9 +259,22 @@ exports.Bundle = class {
         this.requiresBuild = false;
 
         if (mapContents) {
-          return fs.writeFile(path.posix.join(platform.output, mapFileName), mapContents);
+          return fs.writeFile(path.posix.join(platform.output, mapFileName), mapContents)
+          .catch(e => {
+            console.log(`Unable to write the sourcemap to ${path.posix.join(platform.output, mapFileName)}`);
+          });
         }
+      })
+      .catch(e => {
+        console.log(`Unable to write the bundle to ${path.posix.join(platform.output, bundleFileName)}`);
+        console.log(e);
+        throw e;
       });
+    })
+    .catch(e => {
+      console.log('Failed to write the bundle');
+      console.log(e);
+      throw e;
     });
   }
 

lib/build/bundled-source.js

@@ -106,6 +106,7 @@ exports.BundledSource = class {
             }, that.getInclusion(location));
           } catch (e) {
             console.log(`File not found or not accessible: ${location}. Requested by ${modulePath}`);
+            console.log(e);
           }
 
           return contents;
@@ -122,6 +123,20 @@ exports.BundledSource = class {
       loaderConfig
     ).then(traceResult => {
       let traced = traceResult.traced;
+      let errors = traceResult.errors;
+      let warnings = traceResult.warnings;
+
+      if (errors) {
+        for (let i = 0; i < errors.length; i++) {
+          console.log(`Trace error: ${errors[i]}`);
+        }
+      }
+
+      if (warnings) {
+        for (let i = 0; i < warnings.length; i++) {
+          console.log(`Trace warning: ${warnings[i]}`);
+        }
+      }
 
       for (let i = 0, ii = traced.length; i < ii; ++i) {
         let result = traceResult.traced[i];
@@ -149,6 +164,11 @@ exports.BundledSource = class {
           newItem.deps = result.deps;
         }
       }
+    })
+    .catch(e => {
+      console.log('Error occurred while tracing');
+      console.log(e);
+      throw e;
     });
   }
 

lib/build/bundler.js

@@ -171,6 +171,11 @@ exports.Bundler = class {
       }
 
       return description;
+    })
+    .catch(e => {
+      console.log(`Unable to analyze ${(dependency.name || dependency)}`);
+      console.log(e);
+      throw e;
     });
   }
 
@@ -193,6 +198,11 @@ exports.Bundler = class {
         //Order the bundles so that the bundle containing the config is processed last.
         let configTargetBundleIndex = this.bundles.findIndex(x => x.config.name === this.loaderOptions.configTarget);
         this.bundles.splice(this.bundles.length, 0, this.bundles.splice(configTargetBundleIndex, 1)[0]);
+      })
+      .catch(e => {
+        console.log('Failed to do transforms');
+        console.log(e);
+        throw e;
       });
   }
 

lib/cli.js

@@ -113,3 +113,8 @@ function determineWorkingDirectory(dir) {
     .then(() => dir)
     .catch(() => determineWorkingDirectory(parent));
 }
+
+process.on('unhandledRejection', (reason) => {
+  console.log('Uncaught promise rejection:');
+  console.log(reason);
+});