Homemade.js

Cozy C-like preprocessor. Implements include, exclude, define, put, if, elif, ifdef.

a. Use in console

node homemade.js path/to/source.js path/to/destination.js

b. Use with grunt ★

See grunt-homemade task.

API

Fully compatible with preprocessor.js syntax.

#exclude — removes fragments of code

Source:

//#exclude
console.log(a, b, c)
//#end

Result:

Useful when you want to remove supporting code from the build, like helper functions etc.

#include — inserts file

Source:

//#include ./c.js

c.js:

Hello world!

Result:

Hello world!

Files are inserted in a recursive way, so that inserted files will be handled also. The current directory . is taken one of the current file. The current file is that where the current #inline directive is.

#define — defines variable to use in preprocessor

Source:

//#define name = "Hello world"
//#define dictToArray = function(dict){ var result = []; for (var key in dict){ result.push(key + " " + dict[key]) }; return result; }

Defined variables can be used later in #put or #ifs.

#put — places variable source (uses tosource for serialization)

Source:

var projectName = //#put name
//#define a = {a:1, b:2, c:3}
//#put a;
//#put dictToArray(a);
//#put `var a = ` + projectName + `;`

Result:

var projectName = 'Hello world'
{a:1, b:2, c:3}
["a 1", "b 2", "c 3"]

To output raw code, use markdown inline code notation, like \raw code` + variable`

#if, #ifdef, #ifndef, #elif, #else

Source:

//#if DEV
	console.log("debug:", result)
//#else
	//#put "var projectName = '" + name + "'"
//#endif

Result with DEV === true:

	console.log("debug:", result)

Result with DEV === false:

	var projectName = 'Hello world'

For more examples see test/before.js.

jQuery/Zepto/vanilla plugin boilerplate

build.js:

(function($){
	//#ifndef pluginName
		var pluginName = "awesomePlugin"
	//#else
		/* #put `var pluginName = ` + pluginName */
	//#endif

	//#include "../src/utils.js"
	//#include "../src/AwesomePlugin.js"

	//jquery-plugin
	if ($){
		$['fn'][pluginName] = function (arg) {
			return this['each'](function(i,e){
				var $e = $(e);
				var instance = new AwesomePlugin($e[0], arg);
				$e.data(pluginName, instance);
			})
		};
	} else {
		window[pluginName] = AwesomePlugin;
	}
})(window['jQuery'] || window['Zepto']);

Motivation

This plugin was created as a fast replacement to preprocessor.js and alike, due to lack of necessary building features in them on that moment, like define, put etc.

For now homemade has some flaws:

• Insecure − context is defined in global scope, so that you have to beware of variable names in #define
• Nested conditions are not supported
• No decent syntax errors detection

Projects which use homemade

• sticky-js
• imagine-js
• rus-js

License

Copyright Dmitry Ivanov. Written by Dmitry Ivanov. Licensed under the MIT license.