mirror of https://github.com/webpack/webpack.git
46 lines
1.6 KiB
JavaScript
46 lines
1.6 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("./dependencies/ConstDependency");
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const NullFactory = require("./NullFactory");
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class CompatibilityPlugin {
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apply(compiler) {
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compiler.hooks.compilation.tap("CompatibilityPlugin", (compilation, {
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normalModuleFactory
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}) => {
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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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normalModuleFactory.hooks.parser.for("javascript/auto").tap("CompatibilityPlugin", (parser, parserOptions) => {
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if(typeof parserOptions.browserify !== "undefined" && !parserOptions.browserify)
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return;
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parser.hooks.call.for("require").tap("CompatibilityPlugin", (expr) => {
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// support for browserify style require delegator: "require(o, !0)"
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if(expr.arguments.length !== 2) return;
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const second = parser.evaluateExpression(expr.arguments[1]);
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if(!second.isBoolean()) return;
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if(second.asBool() !== true) return;
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const dep = new ConstDependency("require", expr.callee.range);
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dep.loc = expr.loc;
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if(parser.state.current.dependencies.length > 1) {
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const last = parser.state.current.dependencies[parser.state.current.dependencies.length - 1];
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if(last.critical && last.options && last.options.request === "." && last.userRequest === "." && last.options.recursive)
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parser.state.current.dependencies.pop();
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}
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parser.state.current.addDependency(dep);
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return true;
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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 = CompatibilityPlugin;
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