WarnCaseSensitiveModulesPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const CaseSensitiveModulesWarning = require("./CaseSensitiveModulesWarning");
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./Module")} Module */
class WarnCaseSensitiveModulesPlugin {
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"WarnCaseSensitiveModulesPlugin",
compilation => {
compilation.hooks.seal.tap("WarnCaseSensitiveModulesPlugin", () => {
/** @type {Map<string, Map<string, Module>>} */
const moduleWithoutCase = new Map();
for (const module of compilation.modules) {
const identifier = module.identifier();
const lowerIdentifier = identifier.toLowerCase();
let map = moduleWithoutCase.get(lowerIdentifier);
if (map === undefined) {
map = new Map();
moduleWithoutCase.set(lowerIdentifier, map);
}
map.set(identifier, module);
}
for (const pair of moduleWithoutCase) {
const map = pair[1];
if (map.size > 1) {
compilation.warnings.push(
new CaseSensitiveModulesWarning(
map.values(),
compilation.moduleGraph
)
);
}
}
});
}
);
}
}
module.exports = WarnCaseSensitiveModulesPlugin;