init

马宇豪

2024-07-16 f591c27b57e2418c9495bc02ae8cfff84d35bc18

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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 */
/** @typedef {import("./NormalModule")} NormalModule */
 
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();
 
                        // Ignore `data:` URLs, because it's not a real path
                        if (
                            /** @type {NormalModule} */
                            (module).resourceResolveData !== undefined &&
                            /** @type {NormalModule} */
                            (module).resourceResolveData.encodedContent !== undefined
                        ) {
                            continue;
                        }
 
                        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;