savefy.js

var savefy = function() {
	//grab all the script files in your browser with type "text/template", stored as an array
	var templates = document.querySelectorAll('script[type="text/template"]');
	//iterate through each template
	_.each(templates, function(template) {

		if (template.id) {
			//grab the id of the template and store as a handlebars filename
			var filename = (template.id + '.hbs').toString();
			//store the contents of the template....
			var contents = $(template).html();
			//...and create a new file
			var newfile = new Blob([contents]);
			//save to disk
			saveAs(newfile, filename);
		}
	});
};

I wrote this function as part of a Backbone.js perfomance optimisation project to implement precompilation of templates.It saved a tonne of time with a Backbone app which contained over 40 templates.

Use savefy.js to automate the conversion process of templates from existing scripts. Run this in your browser console. Dependencies are standard Backbone.js (Underscore.js, jQuery) plus the FileSaver.js library. (https://github.com/eligrey/FileSaver.js).