mirror of https://github.com/webpack/webpack.git
548 lines
15 KiB
JavaScript
548 lines
15 KiB
JavaScript
var path = require("path");
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var fs = require("fs");
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fs.existsSync = fs.existsSync || path.existsSync;
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var interpret = require("interpret");
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module.exports = function(yargs, argv, convertOptions) {
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var options = [];
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// Shortcuts
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if(argv.d) {
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argv.debug = true;
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argv["output-pathinfo"] = true;
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if(!argv.devtool) {
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argv.devtool = "eval-cheap-module-source-map";
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}
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}
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if(argv.p) {
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argv["optimize-minimize"] = true;
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argv["define"] = [].concat(argv["define"] || []).concat("process.env.NODE_ENV=\"production\"");
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}
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var configFileLoaded = false;
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var configFiles = [];
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var extensions = Object.keys(interpret.extensions).sort(function(a, b) {
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return a === ".js" ? -1 : b === ".js" ? 1 : a.length - b.length;
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});
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var defaultConfigFiles = ["webpack.config", "webpackfile"].map(function(filename) {
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return extensions.map(function(ext) {
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return {
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path: path.resolve(filename + ext),
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ext: ext
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};
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});
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}).reduce(function(a, i) {
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return a.concat(i);
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}, []);
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var i;
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if(argv.config) {
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var getConfigExtension = function getConfigExtension(configPath) {
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for(i = extensions.length - 1; i >= 0; i--) {
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var tmpExt = extensions[i];
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if(configPath.indexOf(tmpExt, configPath.length - tmpExt.length) > -1) {
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return tmpExt;
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}
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}
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return path.extname(configPath);
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};
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var mapConfigArg = function mapConfigArg(configArg) {
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var resolvedPath = path.resolve(configArg);
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var extension = getConfigExtension(resolvedPath);
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return {
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path: resolvedPath,
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ext: extension
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};
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};
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var configArgList = Array.isArray(argv.config) ? argv.config : [argv.config];
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configFiles = configArgList.map(mapConfigArg);
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} else {
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for(i = 0; i < defaultConfigFiles.length; i++) {
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var webpackConfig = defaultConfigFiles[i].path;
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if(fs.existsSync(webpackConfig)) {
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configFiles.push({
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path: webpackConfig,
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ext: defaultConfigFiles[i].ext
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});
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break;
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}
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}
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}
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if(configFiles.length > 0) {
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var registerCompiler = function registerCompiler(moduleDescriptor) {
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if(moduleDescriptor) {
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if(typeof moduleDescriptor === "string") {
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require(moduleDescriptor);
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} else if(!Array.isArray(moduleDescriptor)) {
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moduleDescriptor.register(require(moduleDescriptor.module));
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} else {
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for(var i = 0; i < moduleDescriptor.length; i++) {
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try {
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registerCompiler(moduleDescriptor[i]);
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break;
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} catch(e) {
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// do nothing
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}
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}
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}
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}
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};
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var requireConfig = function requireConfig(configPath) {
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var options = require(configPath);
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var isES6DefaultExportedFunc = (
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typeof options === "object" && options !== null && typeof options.default === "function"
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);
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if(typeof options === "function" || isES6DefaultExportedFunc) {
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options = isES6DefaultExportedFunc ? options.default : options;
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options = options(argv.env, argv);
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}
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return options;
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};
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configFiles.forEach(function(file) {
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registerCompiler(interpret.extensions[file.ext]);
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options.push(requireConfig(file.path));
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});
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configFileLoaded = true;
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}
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if(!configFileLoaded) {
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return processConfiguredOptions({});
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} else if(options.length === 1) {
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return processConfiguredOptions(options[0]);
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} else {
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return processConfiguredOptions(options);
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}
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function processConfiguredOptions(options) {
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if(options === null || typeof options !== "object") {
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console.error("Config did not export an object or a function returning an object.");
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process.exit(-1); // eslint-disable-line
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}
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// process Promise
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if(typeof options.then === "function") {
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return options.then(processConfiguredOptions);
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}
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// process ES6 default
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if(typeof options === "object" && typeof options.default === "object") {
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return processConfiguredOptions(options.default);
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}
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if(Array.isArray(options)) {
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options.forEach(processOptions);
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} else {
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processOptions(options);
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}
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if(argv.context) {
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options.context = path.resolve(argv.context);
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}
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if(!options.context) {
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options.context = process.cwd();
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}
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if(argv.watch) {
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options.watch = true;
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}
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if(argv["watch-aggregate-timeout"]) {
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options.watchOptions = options.watchOptions || {};
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options.watchOptions.aggregateTimeout = +argv["watch-aggregate-timeout"];
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}
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if(argv["watch-poll"]) {
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options.watchOptions = options.watchOptions || {};
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if(typeof argv["watch-poll"] !== "boolean")
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options.watchOptions.poll = +argv["watch-poll"];
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else
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options.watchOptions.poll = true;
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}
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if(argv["watch-stdin"]) {
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options.watchOptions = options.watchOptions || {};
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options.watchOptions.stdin = true;
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options.watch = true;
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}
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return options;
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}
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function processOptions(options) {
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var noOutputFilenameDefined = !options.output || !options.output.filename;
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function ifArg(name, fn, init, finalize) {
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if(Array.isArray(argv[name])) {
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if(init) {
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init();
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}
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argv[name].forEach(fn);
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if(finalize) {
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finalize();
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}
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} else if(typeof argv[name] !== "undefined" && argv[name] !== null) {
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if(init) {
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init();
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}
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fn(argv[name], -1);
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if(finalize) {
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finalize();
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}
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}
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}
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function ifArgPair(name, fn, init, finalize) {
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ifArg(name, function(content, idx) {
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var i = content.indexOf("=");
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if(i < 0) {
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return fn(null, content, idx);
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} else {
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return fn(content.substr(0, i), content.substr(i + 1), idx);
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}
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}, init, finalize);
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}
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function ifBooleanArg(name, fn) {
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ifArg(name, function(bool) {
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if(bool) {
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fn();
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}
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});
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}
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function mapArgToBoolean(name, optionName) {
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ifArg(name, function(bool) {
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if(bool === true)
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options[optionName || name] = true;
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else if(bool === false)
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options[optionName || name] = false;
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});
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}
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function loadPlugin(name) {
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var loadUtils = require("loader-utils");
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var args;
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try {
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var p = name && name.indexOf("?");
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if(p > -1) {
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args = loadUtils.parseQuery(name.substring(p));
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name = name.substring(0, p);
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}
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} catch(e) {
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console.log("Invalid plugin arguments " + name + " (" + e + ").");
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process.exit(-1); // eslint-disable-line
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}
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var path;
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try {
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var resolve = require("enhanced-resolve");
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path = resolve.sync(process.cwd(), name);
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} catch(e) {
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console.log("Cannot resolve plugin " + name + ".");
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process.exit(-1); // eslint-disable-line
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}
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var Plugin;
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try {
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Plugin = require(path);
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} catch(e) {
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console.log("Cannot load plugin " + name + ". (" + path + ")");
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throw e;
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}
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try {
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return new Plugin(args);
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} catch(e) {
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console.log("Cannot instantiate plugin " + name + ". (" + path + ")");
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throw e;
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}
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}
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function ensureObject(parent, name) {
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if(typeof parent[name] !== "object" || parent[name] === null) {
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parent[name] = {};
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}
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}
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function ensureArray(parent, name) {
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if(!Array.isArray(parent[name])) {
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parent[name] = [];
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}
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}
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ifArgPair("entry", function(name, entry) {
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if(typeof options.entry[name] !== "undefined" && options.entry[name] !== null) {
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options.entry[name] = [].concat(options.entry[name]).concat(entry);
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} else {
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options.entry[name] = entry;
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}
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}, function() {
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ensureObject(options, "entry");
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});
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function bindLoaders(arg, collection) {
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ifArgPair(arg, function(name, binding) {
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if(name === null) {
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name = binding;
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binding += "-loader";
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}
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options.module[collection].push({
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test: new RegExp("\\." + name.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&") + "$"),
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loader: binding
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});
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}, function() {
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ensureObject(options, "module");
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ensureArray(options.module, collection);
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});
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}
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bindLoaders("module-bind", "loaders");
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bindLoaders("module-bind-pre", "preLoaders");
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bindLoaders("module-bind-post", "postLoaders");
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var defineObject;
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ifArgPair("define", function(name, value) {
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if(name === null) {
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name = value;
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value = true;
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}
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defineObject[name] = value;
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}, function() {
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defineObject = {};
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}, function() {
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ensureArray(options, "plugins");
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var DefinePlugin = require("../lib/DefinePlugin");
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options.plugins.push(new DefinePlugin(defineObject));
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});
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ifArg("output-path", function(value) {
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ensureObject(options, "output");
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options.output.path = path.resolve(value);
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});
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ifArg("output-filename", function(value) {
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ensureObject(options, "output");
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options.output.filename = value;
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noOutputFilenameDefined = false;
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});
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ifArg("output-chunk-filename", function(value) {
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ensureObject(options, "output");
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options.output.chunkFilename = value;
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});
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ifArg("output-source-map-filename", function(value) {
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ensureObject(options, "output");
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options.output.sourceMapFilename = value;
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});
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ifArg("output-public-path", function(value) {
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ensureObject(options, "output");
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options.output.publicPath = value;
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});
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ifArg("output-jsonp-function", function(value) {
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ensureObject(options, "output");
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options.output.jsonpFunction = value;
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});
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ifBooleanArg("output-pathinfo", function() {
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ensureObject(options, "output");
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options.output.pathinfo = true;
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});
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ifArg("output-library", function(value) {
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ensureObject(options, "output");
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options.output.library = value;
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});
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ifArg("output-library-target", function(value) {
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ensureObject(options, "output");
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options.output.libraryTarget = value;
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});
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ifArg("records-input-path", function(value) {
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options.recordsInputPath = path.resolve(value);
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});
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ifArg("records-output-path", function(value) {
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options.recordsOutputPath = path.resolve(value);
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});
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ifArg("records-path", function(value) {
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options.recordsPath = path.resolve(value);
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});
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ifArg("target", function(value) {
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options.target = value;
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});
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mapArgToBoolean("cache");
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ifBooleanArg("hot", function() {
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ensureArray(options, "plugins");
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var HotModuleReplacementPlugin = require("../lib/HotModuleReplacementPlugin");
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options.plugins.push(new HotModuleReplacementPlugin());
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});
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ifBooleanArg("debug", function() {
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ensureArray(options, "plugins");
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var LoaderOptionsPlugin = require("../lib/LoaderOptionsPlugin");
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options.plugins.push(new LoaderOptionsPlugin({
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debug: true
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}));
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});
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ifArg("devtool", function(value) {
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options.devtool = value;
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});
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function processResolveAlias(arg, key) {
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ifArgPair(arg, function(name, value) {
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if(!name) {
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throw new Error("--" + arg + " <string>=<string>");
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}
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ensureObject(options, key);
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ensureObject(options[key], "alias");
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options[key].alias[name] = value;
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});
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}
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processResolveAlias("resolve-alias", "resolve");
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processResolveAlias("resolve-loader-alias", "resolveLoader");
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ifArg("resolve-extensions", function(value) {
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ensureObject(options, "resolve");
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if(Array.isArray(value)) {
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options.resolve.extensions = value;
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} else {
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options.resolve.extensions = value.split(/,\s*/);
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}
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});
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ifArg("optimize-max-chunks", function(value) {
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ensureArray(options, "plugins");
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var LimitChunkCountPlugin = require("../lib/optimize/LimitChunkCountPlugin");
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options.plugins.push(new LimitChunkCountPlugin({
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maxChunks: parseInt(value, 10)
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}));
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});
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ifArg("optimize-min-chunk-size", function(value) {
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ensureArray(options, "plugins");
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var MinChunkSizePlugin = require("../lib/optimize/MinChunkSizePlugin");
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options.plugins.push(new MinChunkSizePlugin({
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minChunkSize: parseInt(value, 10)
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}));
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});
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ifBooleanArg("optimize-minimize", function() {
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ensureArray(options, "plugins");
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var UglifyJsPlugin = require("../lib/optimize/UglifyJsPlugin");
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var LoaderOptionsPlugin = require("../lib/LoaderOptionsPlugin");
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options.plugins.push(new UglifyJsPlugin({
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sourceMap: options.devtool && (options.devtool.indexOf("sourcemap") >= 0 || options.devtool.indexOf("source-map") >= 0)
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}));
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options.plugins.push(new LoaderOptionsPlugin({
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minimize: true
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}));
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});
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ifArg("prefetch", function(request) {
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ensureArray(options, "plugins");
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var PrefetchPlugin = require("../lib/PrefetchPlugin");
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options.plugins.push(new PrefetchPlugin(request));
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});
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ifArg("provide", function(value) {
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ensureArray(options, "plugins");
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var idx = value.indexOf("=");
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var name;
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if(idx >= 0) {
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name = value.substr(0, idx);
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value = value.substr(idx + 1);
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} else {
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name = value;
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}
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var ProvidePlugin = require("../lib/ProvidePlugin");
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options.plugins.push(new ProvidePlugin(name, value));
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});
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ifArg("plugin", function(value) {
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ensureArray(options, "plugins");
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options.plugins.push(loadPlugin(value));
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});
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mapArgToBoolean("bail");
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mapArgToBoolean("profile");
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if(noOutputFilenameDefined) {
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ensureObject(options, "output");
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if(convertOptions && convertOptions.outputFilename) {
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options.output.path = path.resolve(path.dirname(convertOptions.outputFilename));
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options.output.filename = path.basename(convertOptions.outputFilename);
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} else if(argv._.length > 0) {
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options.output.filename = argv._.pop();
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options.output.path = path.resolve(path.dirname(options.output.filename));
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options.output.filename = path.basename(options.output.filename);
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} else if(configFileLoaded) {
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throw new Error("'output.filename' is required, either in config file or as --output-filename");
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} else {
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console.error("No configuration file found and no output filename configured via CLI option.");
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console.error("A configuration file could be named 'webpack.config.js' in the current directory.");
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console.error("Use --help to display the CLI options.");
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process.exit(-1); // eslint-disable-line
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}
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}
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if(argv._.length > 0) {
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if(Array.isArray(options.entry) || typeof options.entry === "string") {
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options.entry = {
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main: options.entry
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};
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}
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ensureObject(options, "entry");
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var addTo = function addTo(name, entry) {
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if(options.entry[name]) {
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if(!Array.isArray(options.entry[name])) {
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options.entry[name] = [options.entry[name]];
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}
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options.entry[name].push(entry);
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} else {
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options.entry[name] = entry;
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}
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};
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argv._.forEach(function(content) {
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var i = content.indexOf("=");
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var j = content.indexOf("?");
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if(i < 0 || (j >= 0 && j < i)) {
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var resolved = path.resolve(content);
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if(fs.existsSync(resolved)) {
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addTo("main", resolved);
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} else {
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addTo("main", content);
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}
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} else {
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addTo(content.substr(0, i), content.substr(i + 1));
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}
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});
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}
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if(!options.entry) {
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if(configFileLoaded) {
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console.error("Configuration file found but no entry configured.");
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} else {
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console.error("No configuration file found and no entry configured via CLI option.");
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console.error("When using the CLI you need to provide at least two arguments: entry and output.");
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console.error("A configuration file could be named 'webpack.config.js' in the current directory.");
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}
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console.error("Use --help to display the CLI options.");
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process.exit(-1); // eslint-disable-line
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}
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}
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};
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