mirror of https://github.com/webpack/webpack.git
91 lines
4.4 KiB
JavaScript
91 lines
4.4 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 ConstDependency = require("./ConstDependency");
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const CommonJsRequireDependency = require("./CommonJsRequireDependency");
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const CommonJsRequireContextDependency = require("./CommonJsRequireContextDependency");
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const RequireResolveDependency = require("./RequireResolveDependency");
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const RequireResolveContextDependency = require("./RequireResolveContextDependency");
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const RequireResolveHeaderDependency = require("./RequireResolveHeaderDependency");
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const RequireHeaderDependency = require("./RequireHeaderDependency");
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const NullFactory = require("../NullFactory");
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const RequireResolveDependencyParserPlugin = require("./RequireResolveDependencyParserPlugin");
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const CommonJsRequireDependencyParserPlugin = require("./CommonJsRequireDependencyParserPlugin");
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const ParserHelpers = require("../ParserHelpers");
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class CommonJsPlugin {
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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.hooks.compilation.tap("CommonJsPlugin", (compilation, {
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contextModuleFactory,
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normalModuleFactory
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}) => {
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compilation.dependencyFactories.set(CommonJsRequireDependency, normalModuleFactory);
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compilation.dependencyTemplates.set(CommonJsRequireDependency, new CommonJsRequireDependency.Template());
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compilation.dependencyFactories.set(CommonJsRequireContextDependency, contextModuleFactory);
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compilation.dependencyTemplates.set(CommonJsRequireContextDependency, new CommonJsRequireContextDependency.Template());
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compilation.dependencyFactories.set(RequireResolveDependency, normalModuleFactory);
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compilation.dependencyTemplates.set(RequireResolveDependency, new RequireResolveDependency.Template());
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compilation.dependencyFactories.set(RequireResolveContextDependency, contextModuleFactory);
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compilation.dependencyTemplates.set(RequireResolveContextDependency, new RequireResolveContextDependency.Template());
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compilation.dependencyFactories.set(RequireResolveHeaderDependency, new NullFactory());
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compilation.dependencyTemplates.set(RequireResolveHeaderDependency, new RequireResolveHeaderDependency.Template());
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compilation.dependencyFactories.set(RequireHeaderDependency, new NullFactory());
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compilation.dependencyTemplates.set(RequireHeaderDependency, new RequireHeaderDependency.Template());
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const handler = (parser, parserOptions) => {
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if(typeof parserOptions.commonjs !== "undefined" && !parserOptions.commonjs)
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return;
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const requireExpressions = ["require", "require.resolve", "require.resolveWeak"];
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for(let expression of requireExpressions) {
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parser.hooks.typeof.for(expression).tap("CommonJsPlugin", ParserHelpers.toConstantDependency(parser, JSON.stringify("function")));
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parser.hooks.evaluateTypeof.for(expression).tap("CommonJsPlugin", ParserHelpers.evaluateToString("function"));
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parser.hooks.evaluateIdentifier.for(expression).tap("CommonJsPlugin", ParserHelpers.evaluateToIdentifier(expression, true));
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}
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parser.hooks.evaluateTypeof.for("module").tap("CommonJsPlugin", ParserHelpers.evaluateToString("object"));
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parser.hooks.assign.for("require").tap("CommonJsPlugin", (expr) => {
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// to not leak to global "require", we need to define a local require here.
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const dep = new ConstDependency("var require;", 0);
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dep.loc = expr.loc;
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parser.state.current.addDependency(dep);
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parser.scope.definitions.add("require");
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return true;
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});
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parser.hooks.canRename.for("require").tap("CommonJsPlugin", () => true);
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parser.hooks.rename.for("require").tap("CommonJsPlugin", (expr) => {
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// define the require variable. It's still undefined, but not "not defined".
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const dep = new ConstDependency("var require;", 0);
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dep.loc = expr.loc;
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parser.state.current.addDependency(dep);
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return false;
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});
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parser.hooks.typeof.for("module").tap("CommonJsPlugin", () => true);
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parser.hooks.evaluateTypeof.for("exports").tap("CommonJsPlugin", ParserHelpers.evaluateToString("object"));
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new CommonJsRequireDependencyParserPlugin(options).apply(parser);
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new RequireResolveDependencyParserPlugin(options).apply(parser);
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};
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normalModuleFactory.hooks.parser.for("javascript/auto").tap("CommonJsPlugin", handler);
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normalModuleFactory.hooks.parser.for("javascript/dynamic").tap("CommonJsPlugin", handler);
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});
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}
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}
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module.exports = CommonJsPlugin;
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