1 files changed, 70 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/CompatibilityPlugin.js b/node_modules/webpack/lib/CompatibilityPlugin.js
new file mode 100644
index 00000000..1544d6c8
--- /dev/null
+++ b/node_modules/webpack/lib/CompatibilityPlugin.js
@@ -0,0 +1,70 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const ConstDependency = require("./dependencies/ConstDependency");
+
+const NullFactory = require("./NullFactory");
+
+/** @typedef {import("./Compiler")} Compiler */
+
+class CompatibilityPlugin {
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler Webpack Compiler
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.compilation.tap(
+			"CompatibilityPlugin",
+			(compilation, { normalModuleFactory }) => {
+				compilation.dependencyFactories.set(ConstDependency, new NullFactory());
+				compilation.dependencyTemplates.set(
+					ConstDependency,
+					new ConstDependency.Template()
+				);
+
+				normalModuleFactory.hooks.parser
+					.for("javascript/auto")
+					.tap("CompatibilityPlugin", (parser, parserOptions) => {
+						if (
+							parserOptions.browserify !== undefined &&
+							!parserOptions.browserify
+						)
+							return;
+
+						parser.hooks.call
+							.for("require")
+							.tap("CompatibilityPlugin", expr => {
+								// support for browserify style require delegator: "require(o, !0)"
+								if (expr.arguments.length !== 2) return;
+								const second = parser.evaluateExpression(expr.arguments[1]);
+								if (!second.isBoolean()) return;
+								if (second.asBool() !== true) return;
+								const dep = new ConstDependency("require", expr.callee.range);
+								dep.loc = expr.loc;
+								if (parser.state.current.dependencies.length > 1) {
+									const last =
+										parser.state.current.dependencies[
+											parser.state.current.dependencies.length - 1
+										];
+									if (
+										last.critical &&
+										last.options &&
+										last.options.request === "." &&
+										last.userRequest === "." &&
+										last.options.recursive
+									)
+										parser.state.current.dependencies.pop();
+								}
+								parser.state.current.addDependency(dep);
+								return true;
+							});
+					});
+			}
+		);
+	}
+}
+module.exports = CompatibilityPlugin;