настройка webpack

node_modules/webpack/lib/dependencies/CommonJsPlugin.js

@@ -0,0 +1,158 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+const ConstDependency = require("./ConstDependency");
+const CommonJsRequireDependency = require("./CommonJsRequireDependency");
+const CommonJsRequireContextDependency = require("./CommonJsRequireContextDependency");
+const RequireResolveDependency = require("./RequireResolveDependency");
+const RequireResolveContextDependency = require("./RequireResolveContextDependency");
+const RequireResolveHeaderDependency = require("./RequireResolveHeaderDependency");
+const RequireHeaderDependency = require("./RequireHeaderDependency");
+
+const NullFactory = require("../NullFactory");
+
+const RequireResolveDependencyParserPlugin = require("./RequireResolveDependencyParserPlugin");
+const CommonJsRequireDependencyParserPlugin = require("./CommonJsRequireDependencyParserPlugin");
+
+const ParserHelpers = require("../ParserHelpers");
+
+class CommonJsPlugin {
+	constructor(options) {
+		this.options = options;
+	}
+
+	apply(compiler) {
+		const options = this.options;
+		compiler.hooks.compilation.tap(
+			"CommonJsPlugin",
+			(compilation, { contextModuleFactory, normalModuleFactory }) => {
+				compilation.dependencyFactories.set(
+					CommonJsRequireDependency,
+					normalModuleFactory
+				);
+				compilation.dependencyTemplates.set(
+					CommonJsRequireDependency,
+					new CommonJsRequireDependency.Template()
+				);
+
+				compilation.dependencyFactories.set(
+					CommonJsRequireContextDependency,
+					contextModuleFactory
+				);
+				compilation.dependencyTemplates.set(
+					CommonJsRequireContextDependency,
+					new CommonJsRequireContextDependency.Template()
+				);
+
+				compilation.dependencyFactories.set(
+					RequireResolveDependency,
+					normalModuleFactory
+				);
+				compilation.dependencyTemplates.set(
+					RequireResolveDependency,
+					new RequireResolveDependency.Template()
+				);
+
+				compilation.dependencyFactories.set(
+					RequireResolveContextDependency,
+					contextModuleFactory
+				);
+				compilation.dependencyTemplates.set(
+					RequireResolveContextDependency,
+					new RequireResolveContextDependency.Template()
+				);
+
+				compilation.dependencyFactories.set(
+					RequireResolveHeaderDependency,
+					new NullFactory()
+				);
+				compilation.dependencyTemplates.set(
+					RequireResolveHeaderDependency,
+					new RequireResolveHeaderDependency.Template()
+				);
+
+				compilation.dependencyFactories.set(
+					RequireHeaderDependency,
+					new NullFactory()
+				);
+				compilation.dependencyTemplates.set(
+					RequireHeaderDependency,
+					new RequireHeaderDependency.Template()
+				);
+
+				const handler = (parser, parserOptions) => {
+					if (parserOptions.commonjs !== undefined && !parserOptions.commonjs)
+						return;
+
+					const requireExpressions = [
+						"require",
+						"require.resolve",
+						"require.resolveWeak"
+					];
+					for (let expression of requireExpressions) {
+						parser.hooks.typeof
+							.for(expression)
+							.tap(
+								"CommonJsPlugin",
+								ParserHelpers.toConstantDependency(
+									parser,
+									JSON.stringify("function")
+								)
+							);
+						parser.hooks.evaluateTypeof
+							.for(expression)
+							.tap(
+								"CommonJsPlugin",
+								ParserHelpers.evaluateToString("function")
+							);
+						parser.hooks.evaluateIdentifier
+							.for(expression)
+							.tap(
+								"CommonJsPlugin",
+								ParserHelpers.evaluateToIdentifier(expression, true)
+							);
+					}
+
+					parser.hooks.evaluateTypeof
+						.for("module")
+						.tap("CommonJsPlugin", ParserHelpers.evaluateToString("object"));
+					parser.hooks.assign.for("require").tap("CommonJsPlugin", expr => {
+						// to not leak to global "require", we need to define a local require here.
+						const dep = new ConstDependency("var require;", 0);
+						dep.loc = expr.loc;
+						parser.state.current.addDependency(dep);
+						parser.scope.definitions.add("require");
+						return true;
+					});
+					parser.hooks.canRename
+						.for("require")
+						.tap("CommonJsPlugin", () => true);
+					parser.hooks.rename.for("require").tap("CommonJsPlugin", expr => {
+						// define the require variable. It's still undefined, but not "not defined".
+						const dep = new ConstDependency("var require;", 0);
+						dep.loc = expr.loc;
+						parser.state.current.addDependency(dep);
+						return false;
+					});
+					parser.hooks.typeof.for("module").tap("CommonJsPlugin", () => true);
+					parser.hooks.evaluateTypeof
+						.for("exports")
+						.tap("CommonJsPlugin", ParserHelpers.evaluateToString("object"));
+
+					new CommonJsRequireDependencyParserPlugin(options).apply(parser);
+					new RequireResolveDependencyParserPlugin(options).apply(parser);
+				};
+
+				normalModuleFactory.hooks.parser
+					.for("javascript/auto")
+					.tap("CommonJsPlugin", handler);
+				normalModuleFactory.hooks.parser
+					.for("javascript/dynamic")
+					.tap("CommonJsPlugin", handler);
+			}
+		);
+	}
+}
+module.exports = CommonJsPlugin;