source: imaps-frontend/node_modules/webpack/lib/CaseSensitiveModulesWarning.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

const WebpackError = require("./WebpackError");

/** @typedef {import("./Module")} Module */
/** @typedef {import("./ModuleGraph")} ModuleGraph */

/**
 * @param {Module[]} modules the modules to be sorted
 * @returns {Module[]} sorted version of original modules
 */
const sortModules = modules =>
        modules.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
 * @param {ModuleGraph} moduleGraph the module graph
 * @returns {string} each message from provided modules
 */
const createModulesListMessage = (modules, moduleGraph) =>
        modules
                .map(m => {
                        let message = `* ${m.identifier()}`;
                        const validReasons = Array.from(
                                moduleGraph.getIncomingConnectionsByOriginModule(m).keys()
                        ).filter(Boolean);

                        if (validReasons.length > 0) {
                                message += `\n    Used by ${validReasons.length} module(s), i. e.`;
                                message += `\n    ${
                                        /** @type {Module[]} */ (validReasons)[0].identifier()
                                }`;
                        }
                        return message;
                })
                .join("\n");

class CaseSensitiveModulesWarning extends WebpackError {
        /**
         * Creates an instance of CaseSensitiveModulesWarning.
         * @param {Iterable<Module>} modules modules that were detected
         * @param {ModuleGraph} moduleGraph the module graph
         */
        constructor(modules, moduleGraph) {
                const sortedModules = sortModules(Array.from(modules));
                const modulesList = createModulesListMessage(sortedModules, moduleGraph);
                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.module = sortedModules[0];
        }
}

module.exports = CaseSensitiveModulesWarning;