Updated gulpfile to be a little bit less repetitive

gulpfile.js

@@ -14,26 +14,37 @@ function compileSass() {
 
 // Compile .coffee files to JavaScript with source maps
 function compileCoffee() {
-  return gulp.src('assets/scripts/*.coffee', { sourcemaps: true })
+  return gulp.src('assets/scripts/**/*.coffee', { sourcemaps: true })
     .pipe(plumber())
     .pipe(coffee({ bare: true }))
     .pipe(gulp.dest('public/js', { sourcemaps: '.' }));
 }
 
 // Watch files for changes
-function watchFiles() {
+function watchFiles(cb) {
   gulp.watch('assets/styles/**/*.sass', compileSass);
   gulp.watch('assets/scripts/**/*.coffee', compileCoffee);
+  cb();
 }
 
-// Define default task
-exports.default = gulp.series(
-  gulp.parallel(compileSass, compileCoffee),
-  watchFiles
-);
+// Chain all asset builds together
+function buildAssets() {
+  return gulp.parallel(compileSass, compileCoffee);
+}
+
+// Perform initial build then watch
+function buildAndWatch() {
+  return gulp.series(
+    buildAssets(),
+    watchFiles
+  );
+}
 
 // one-time build
-exports.build = gulp.parallel(compileSass, compileCoffee);
+exports.build = buildAssets();
 
 // start builds with file watching
-exports.watch = watchFiles;
+exports.watch = buildAndWatch();
+
+// Define default task (defaults to watch)
+exports.default = exports.watch;