Report errors in gulpfile.js

.gitignore

@@ -1,3 +1,4 @@
 .DS_Store
+build/
 dist/
 node_modules/

gulpfile.js

@@ -5,20 +5,31 @@ var merge = require('gulp-merge');
 var sourcemaps = require('gulp-sourcemaps');
 var typescript = require('gulp-typescript');
 var uglify = require('gulp-uglify');
+var open = require('gulp-open');
 
-gulp.task("default", function() {
+gulp.task("build", [ "build:page", "build:code" ], function() {
+});
+
+gulp.task("build:code", function() {
     var sources = gulp.src([ "./src/*.ts", "./lib/*.ts" ]);
     var resources = gulp.src([ "./src/*.gif", "./src/*.wav" ])
         .pipe(transform(function(contents, file) { return "window['" + file.relative + "'] = '" + contents.toString("base64") + "';"; }))
         .pipe(rename(function(path) { path.extname += ".ts"; }));
-    return [
-        merge(sources, resources)
-            .pipe(sourcemaps.init())
-            .pipe(typescript({ target: "ES5", out: "digger.js" }))
-            .pipe(uglify())
-            .pipe(sourcemaps.write("."))
-            .pipe(gulp.dest("./dist")),
-        gulp.src([ "./src/index.html" ])
-            .pipe(gulp.dest("./dist"))
-    ];
-});
+    return merge(sources, resources)
+        .pipe(sourcemaps.init())
+        .pipe(typescript({ target: "ES5", out: "digger.js" }))
+        .once("error", function() { this.once("finish", () => process.exit(1)) })
+        .pipe(uglify())
+        .pipe(sourcemaps.write("."))
+        .pipe(gulp.dest("./build"))
+});
+
+gulp.task("build:page", function() {
+    return gulp.src([ "./src/index.html" ])
+        .pipe(gulp.dest("./build"))
+});
+
+gulp.task("default", [ "build" ], function() {
+    return gulp.src("./build/index.html")
+        .pipe(open());
+});

package.json

@@ -1,15 +1,17 @@
 {
   "private": true,
   "scripts": {
-    "build": "gulp"
+    "start": "npm install && gulp",
+    "build": "npm install && gulp build"
   },
-  "devDependencies": [
-    "typescript",
-    "gulp",
-    "gulp-transform",
-    "gulp-rename",
-    "gulp-merge",
-    "gulp-typescript",
-    "gulp-uglify"
-  ]
+  "devDependencies": {
+    "typescript": "latest",
+    "gulp": "latest",
+    "gulp-transform": "latest",
+    "gulp-rename": "latest",
+    "gulp-merge": "latest",
+    "gulp-typescript": "latest",
+    "gulp-uglify": "latest",
+    "gulp-open": "latest"
+  }
 }