Could not generate \" +\n programUrl +\n \"
\" +\n err.message.replace(/'/g, \"\\\\'\") +\n \"
![](\"http://medyk.org/webmake.copy.png\")
\n\nFiles support can be extended to any other format that compiles to one of _.js_, _.json_, _.css_ or _.html_. See **[custom extensions](#extensions)** for more information.\n\nFor a more in depth look into JavaScript modules and the reason for _Webmake_,\nsee the slides from my presentation at Warsaw's MeetJS: [**JavaScript Modules Done Right**][slides]\n\n**_If you wonder how Webmake compares with other solutions, see [comparison section](#comparison-with-other-solutions)_**\n\n## How does dependency resolution work?\n\nAs it has been stated, Webmake completely follows Node.js in that\n\nLet's say in package named _foo_ you have following individual module files:\n\n_add.js_\n\n```javascript\nmodule.exports = function () {\n var sum = 0, i = 0, args = arguments, l = args.length;\n while (i < l) sum += args[i++];\n return sum;\n};\n```\n\n_increment.js_\n\n```javascript\nvar add = require(\"./add\");\nmodule.exports = function (val) { return add(val, 1); };\n```\n\n_program.js_\n\n```javascript\nvar inc = require(\"./increment\");\nvar a = 1;\ninc(a); // 2\n```\n\nLet's pack _program.js_ with all it's dependencies so it will work in browsers:\n\n $ webmake program.js bundle.js\n\nThe generated file _bundle.js_ now contains the following:\n\n```javascript\n(function (modules) {\n // about 60 lines of import/export path resolution logic\n})({\n foo: {\n \"add.js\": function (exports, module, require) {\n module.exports = function () {\n var sum = 0, i = 0, args = arguments, l = args.length;\n while (i < l) sum += args[i++];\n return sum;\n };\n },\n \"increment.js\": function (exports, module, require) {\n var add = require(\"./add\");\n module.exports = function (val) { return add(val, 1); };\n },\n \"program.js\": function (exports, module, require) {\n var inc = require(\"./increment\");\n var a = 1;\n inc(a); // 2\n }\n }\n})(\"foo/program\");\n```\n\nWhen loaded in browser, _program.js_ module is executed immediately.\n\n### Working with HTML and CSS\n\nTechnically you can construct whole website that way:\n\n_body.html_\n\n```html\n