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1 files changed, 67 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/CaseSensitiveModulesWarning.js b/node_modules/webpack/lib/CaseSensitiveModulesWarning.js
new file mode 100644
index 00000000..6bfeeca8
--- /dev/null
+++ b/node_modules/webpack/lib/CaseSensitiveModulesWarning.js
@@ -0,0 +1,67 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const WebpackError = require("./WebpackError");
+
+/** @typedef {import("./Module")} Module */
+
+/**
+ * @param {Module[]} modules the modules to be sorted
+ * @returns {Module[]} sorted version of original modules
+ */
+const sortModules = modules => {
+	return modules.slice().sort((a, b) => {
+		const aIdent = a.identifier();
+		const bIdent = b.identifier();
+		/* istanbul ignore next */
+		if (aIdent < bIdent) return -1;
+		/* istanbul ignore next */
+		if (aIdent > bIdent) return 1;
+		/* istanbul ignore next */
+		return 0;
+	});
+};
+
+/**
+ * @param {Module[]} modules each module from throw
+ * @returns {string} each message from provided moduels
+ */
+const createModulesListMessage = modules => {
+	return modules
+		.map(m => {
+			let message = `* ${m.identifier()}`;
+			const validReasons = m.reasons.filter(reason => reason.module);
+
+			if (validReasons.length > 0) {
+				message += `\n    Used by ${validReasons.length} module(s), i. e.`;
+				message += `\n    ${validReasons[0].module.identifier()}`;
+			}
+			return message;
+		})
+		.join("\n");
+};
+
+class CaseSensitiveModulesWarning extends WebpackError {
+	/**
+	 * Creates an instance of CaseSensitiveModulesWarning.
+	 * @param {Module[]} modules modules that were detected
+	 */
+	constructor(modules) {
+		const sortedModules = sortModules(modules);
+		const modulesList = createModulesListMessage(sortedModules);
+		super(`There are multiple modules with names that only differ in casing.
+This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.
+Use equal casing. Compare these module identifiers:
+${modulesList}`);
+
+		this.name = "CaseSensitiveModulesWarning";
+		this.origin = this.module = sortedModules[0];
+
+		Error.captureStackTrace(this, this.constructor);
+	}
+}
+
+module.exports = CaseSensitiveModulesWarning;