Sync Gulp tasks with run-sequence

run-sync.js

var runSequence = require('run-sequence'); // https://www.npmjs.com/package/run-sequence
 
//Each successive argument waits for the previous task(s) to finish
gulp.task('some-task', function () {
  runSequence(
   ['task-1', 'task-2', 'task-3'], // These 3 can be done in parallel
   'task-4', // ...then just do this
   ['task-5', 'task-5'], // ...then do these things in parallel
   'task-6', // ...then do this
   // ...
  );
});