Use Gulp to wrap javascript files with a IIFE
Use the gulp-wrap plugin with a simple template:
var wrap = require("gulp-wrap");gulp.src("./src/*.js") .pipe(wrap('(function(){\n"use strict";\n<%= contents %>\n})();')) .pipe(gulp.dest("./dist"));This will wrap each file's contents with the template:
(function(){"use strict";//contents here…})();You can also store the template on the filesystem, rather than embedding it in your gulpfile, and call gulp-wrap using wrap({src: 'path/to/template'})