The main issue I have faced when trying to use bash scripts for this is that most frontend developers are not familiar with it, and a (thankfully) minority still uses Windows. You can still install dependencies from package.json and use ./node_modules/bin/xxx to execute them, so that's not a stopper.
I wrote a simple task-runner around the same time Grunt was born: http://ricardo.cc/cake-flour/, I still use it daily thought it's a bit out of date. Or you can use Gulp, still simpler and faster despite the quirky api.
The main issue I have faced when trying to use bash scripts for this is that most frontend developers are not familiar with it, and a (thankfully) minority still uses Windows. You can still install dependencies from package.json and use ./node_modules/bin/xxx to execute them, so that's not a stopper.
I wrote a simple task-runner around the same time Grunt was born: http://ricardo.cc/cake-flour/, I still use it daily thought it's a bit out of date. Or you can use Gulp, still simpler and faster despite the quirky api.