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MIT License http://www.opensource.org/licenses/mit-license.php

Author Tobias Koppers @sokra

"use strict";

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

module.exports = class CaseSensitiveModulesWarning extends WebpackError {

constructor(modules) {

super();

this.name = "CaseSensitiveModulesWarning";

const sortedModules = this._sort(modules);

const modulesList = this._moduleMessages(sortedModules);

this.message = "There are multiple modules with names that only differ in casing.\n" +

"This can lead to unexpected behavior when compiling on a filesystem with other case-semantic.\n" +

`Use equal casing. Compare these module identifiers:\n${modulesList}`;

this.origin = this.module = sortedModules[0];

Error.captureStackTrace(this, this.constructor);

}

_sort(modules) {

return modules.slice().sort((a, b) => {

a = a.identifier();

b = b.identifier();

/* istanbul ignore next */

if(a < b) return -1;

/* istanbul ignore next */

if(a > b) return 1;

/* istanbul ignore next */

return 0;

});

}

_moduleMessages(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");

}

};

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