sourcemaps with watchify

docs/recipes/fast-browserify-builds-with-watchify.md

@@ -9,7 +9,9 @@ Watchify doesn't have a gulp plugin, but it doesn't need one either: you can use
 ``` javascript
 var gulp = require('gulp');
 var gutil = require('gulp-util');
+var sourcemaps = require('gulp-sourcemaps');
 var source = require('vinyl-source-stream');
+var buffer = require('vinyl-buffer');
 var watchify = require('watchify');
 var browserify = require('browserify');
 
@@ -25,6 +27,11 @@ function bundle() {
     // log errors if they happen
     .on('error', gutil.log.bind(gutil, 'Browserify Error'))
     .pipe(source('bundle.js'))
+    // optional, remove if you dont want sourcemaps
+      .pipe(buffer())
+      .pipe(sourcemaps.init({loadMaps: true})) // loads map from browserify file
+      .pipe(sourcemaps.write('./')) // writes .map file
+    //
     .pipe(gulp.dest('./dist'));
 }
 ```