mirror of https://github.com/webpack/webpack.git
98 lines
3.7 KiB
JavaScript
98 lines
3.7 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const path = require("path");
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const ParserHelpers = require("./ParserHelpers");
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const ConstDependency = require("./dependencies/ConstDependency");
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const NullFactory = require("./NullFactory");
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class NodeStuffPlugin {
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constructor(options) {
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this.options = options;
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}
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apply(compiler) {
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const options = this.options;
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compiler.plugin("compilation", (compilation, params) => {
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compilation.dependencyFactories.set(ConstDependency, new NullFactory());
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compilation.dependencyTemplates.set(ConstDependency, new ConstDependency.Template());
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params.normalModuleFactory.plugin("parser", (parser, parserOptions) => {
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if(parserOptions.node === false)
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return;
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let localOptions = options;
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if(parserOptions.node)
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localOptions = Object.assign({}, localOptions, parserOptions.node);
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function setConstant(expressionName, value) {
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parser.plugin(`expression ${expressionName}`, function() {
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this.state.current.addVariable(expressionName, JSON.stringify(value));
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return true;
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});
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}
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function setModuleConstant(expressionName, fn) {
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parser.plugin(`expression ${expressionName}`, function() {
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this.state.current.addVariable(expressionName, JSON.stringify(fn(this.state.module)));
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return true;
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});
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}
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const context = compiler.context;
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if(localOptions.__filename === "mock") {
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setConstant("__filename", "/index.js");
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} else if(localOptions.__filename) {
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setModuleConstant("__filename", module => path.relative(context, module.resource));
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}
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parser.plugin("evaluate Identifier __filename", function(expr) {
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if(!this.state.module) return;
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const resource = this.state.module.resource;
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const i = resource.indexOf("?");
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return ParserHelpers.evaluateToString(i < 0 ? resource : resource.substr(0, i))(expr);
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});
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if(localOptions.__dirname === "mock") {
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setConstant("__dirname", "/");
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} else if(localOptions.__dirname) {
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setModuleConstant("__dirname", module => path.relative(context, module.context));
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}
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parser.plugin("evaluate Identifier __dirname", function(expr) {
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if(!this.state.module) return;
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return ParserHelpers.evaluateToString(this.state.module.context)(expr);
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});
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parser.plugin("expression require.main", ParserHelpers.toConstantDependency("__webpack_require__.c[__webpack_require__.s]"));
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parser.plugin(
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"expression require.extensions",
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ParserHelpers.expressionIsUnsupported("require.extensions is not supported by webpack. Use a loader instead.")
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);
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parser.plugin("expression module.loaded", ParserHelpers.toConstantDependency("module.l"));
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parser.plugin("expression module.id", ParserHelpers.toConstantDependency("module.i"));
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parser.plugin("expression module.exports", function() {
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const module = this.state.module;
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const isHarmony = module.meta && module.meta.harmonyModule;
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if(!isHarmony)
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return true;
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});
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parser.plugin("evaluate Identifier module.hot", ParserHelpers.evaluateToBoolean(false));
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parser.plugin("expression module", function() {
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const module = this.state.module;
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const isHarmony = module.meta && module.meta.harmonyModule;
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let moduleJsPath = path.join(__dirname, "..", "buildin", isHarmony ? "harmony-module.js" : "module.js");
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if(module.context) {
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moduleJsPath = path.relative(this.state.module.context, moduleJsPath);
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if(!/^[A-Z]:/i.test(moduleJsPath)) {
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moduleJsPath = `./${moduleJsPath.replace(/\\/g, "/")}`;
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}
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}
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return ParserHelpers.addParsedVariableToModule(this, "module", `require(${JSON.stringify(moduleJsPath)})(module)`);
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});
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});
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});
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}
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}
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module.exports = NodeStuffPlugin;
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