webpack/bin/webpack.js

#!/usr/bin/env node

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var path = require("path");
var fs = require("fs");
var util = require("util");
var sprintf = require("sprintf").sprintf;
var argv = require("optimist")
	.usage("Usage: $0 <input> <output>")

	.boolean("min")
	.describe("min", "Minimize it with uglifyjs")
	.default("min", false)

	.boolean("filenames")
	.describe("filenames", "Output Filenames Into File")
	.default("filenames", false)

	.string("options")
	.describe("options", "Options JSON File")

	.string("public-prefix")
	.alias("public-prefix", "script-src-prefix")
	.describe("public-prefix", "Path Prefix For JavaScript Loading")

	.string("libary")
	.describe("libary", "Stores the exports into this variable")

	.boolean("colors")
	.describe("colors", "Output Stats with colors")
	.default("colors", false)

	.boolean("single")
	.describe("single", "Disable lazy loading")
	.default("single", false)

	.boolean("json")
	.describe("json", "Output Stats as JSON")
	.default("json", false)

	.boolean("by-size")
	.describe("by-size", "Sort modules by size in Stats")
	.default("by-size", false)

	.boolean("verbose")
	.describe("verbose", "Output dependencies in Stats")
	.default("verbose", false)

	.string("alias")
	.describe("alias", "Set a alias name for a module. ex. http=http-browserify")

	.boolean("debug")
	.describe("debug", "Prints debug info to output files")
	.default("debug", false)

	.boolean("watch")
	.describe("watch", "Recompiles on changes (except loaders)")
	.default("watch", false)

	.string("watch-delay")
	.describe("watch-delay", "Timeout to wait for the last change")
	.default("watch", false)

	.boolean("progress")
	.describe("progress", "Displays a progress while compiling")
	.default("progress", false)

	.demand(1) // DEPRECATED
	.argv;

var input = argv._[0],
	output = argv._[1];

if (input && input[0] !== '/' && input[1] !== ':') {
	input = path.join(process.cwd(), input);
}
if (output && output[0] !== '/' && input[1] !== ':') {
	output = path.join(process.cwd(), output);
}

var options = {};

if(argv.options) {
	options = require(path.join(process.cwd(), argv.options));
}

if(argv["public-prefix"]) {
	options.publicPrefix = argv["public-prefix"];
}

if(argv.min) {
	options.minimize = true;
}

if(argv.debug) {
	options.debug = true;
}

if(argv.single) {
	options.single = true;
}

if(argv.watch) {
	options.watch = true;
}

if(argv["watch-delay"]) {
	options.watchDelay = parseInt(argv["watch-delay"], 10);
}

if(argv.filenames) {
	options.includeFilenames = true;
}

if(argv.libary) {
	options.libary = argv.libary;
}

if(argv.alias) {
	if(typeof argv.alias === "string")
		argv.alias = [argv.alias];
	options.resolve = options.resolve || {};
	options.resolve.alias = options.resolve.alias || {};
	var aliasObj = options.resolve.alias;
	argv.alias.forEach(function(alias) {
		alias = alias.split("=");
		aliasObj[alias[0]] = alias[1];
	});
}

var webpack = require("../lib/webpack.js");
var formatOutput = require("../lib/formatOutput.js");

function c(str) {
	return argv.colors ? str : "";
}

if(!output) {
	// DEPRECATED
	webpack(input, options, function(err, source) {
		if(err) {
			console.error(err);
			return;
		}
		if(output) {
			fs.writeFileSync(output, source, "utf-8");
		} else {
			process.stdout.write(source);
		}
	});
} else {
	output = output || path.join(process.cwd(), "js", "web.js");
	if(!options.outputDirectory) options.outputDirectory = path.dirname(output);
	if(!options.output) options.output = path.basename(output);
	if(!options.outputPostfix) options.outputPostfix = "." + path.basename(output);
	if(!options.context) options.context = process.cwd();

	// some listeners for the progress display
	if(argv.progress) {
		if(!options.events) options.events = new (require("events").EventEmitter)();
		var events = options.events;

		var sum = 0;
		var finished = 0;
		var chars = 0;
		function print() {
			var msg = "";
			if(sum > 0) {
				msg += "compiling... (" + c("\033[1m\033[33m");
				msg += sprintf("%4s", finished+"") + "/" + sprintf("%4s", sum+"");
				msg += " " + sprintf("%4s", Math.floor(finished*100/sum)+"%");
				msg += c("\033[39m\033[22m") + ")";
			}
			for(var i = 0; i < chars; i++)
				process.stderr.write("\b");
			process.stderr.write(msg);
			chars = msg.length;
		}
		events.on("task", function(name) {
			sum++;
			print();
		});
		events.on("task-end", function(name) {
			finished++;
			if(name) {
				for(var i = 0; i < chars; i++)
					process.stderr.write("\b \b");
				process.stderr.write(name + " " + c("\033[1m\033[32m") + "done" + c("\033[39m\033[22m") + "\n");
				chars = 0;
			}
			print();
		});
		events.on("bundle", function(name) {
			sum = 0;
			finished = 0;
			for(var i = 0; i < chars; i++)
				process.stderr.write("\b \b");
			chars = 0;
		});
	}

	// do the stuff
	webpack(input, options, function(err, stats) {
		if(err) {
			console.error(err);
			return;
		}
		if(argv.json)
			console.log(util.inspect(stats, false, 10, argv.colors));
		else {
			console.log(formatOutput(stats, {
				colors: argv.colors,
				"by-size": argv["by-size"],
				verbose: argv.verbose,
				context: options.context
			}));
		}
	});
}