65 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			65 lines
		
	
	
		
			1.7 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
/*
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	MIT License http://www.opensource.org/licenses/mit-license.php
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	Author Tobias Koppers @sokra
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*/
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"use strict";
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const CaseSensitiveModulesWarning = require("./CaseSensitiveModulesWarning");
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./NormalModule")} NormalModule */
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const PLUGIN_NAME = "WarnCaseSensitiveModulesPlugin";
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class WarnCaseSensitiveModulesPlugin {
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	/**
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	 * Apply the plugin
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	 * @param {Compiler} compiler the compiler instance
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	 * @returns {void}
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	 */
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	apply(compiler) {
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		compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
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			compilation.hooks.seal.tap(PLUGIN_NAME, () => {
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				/** @type {Map<string, Map<string, Module>>} */
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				const moduleWithoutCase = new Map();
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				for (const module of compilation.modules) {
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					const identifier = module.identifier();
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					// Ignore `data:` URLs, because it's not a real path
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					if (
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						/** @type {NormalModule} */
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						(module).resourceResolveData !== undefined &&
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						/** @type {NormalModule} */
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						(module).resourceResolveData.encodedContent !== undefined
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					) {
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						continue;
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					}
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					const lowerIdentifier = identifier.toLowerCase();
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					let map = moduleWithoutCase.get(lowerIdentifier);
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					if (map === undefined) {
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						map = new Map();
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						moduleWithoutCase.set(lowerIdentifier, map);
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					}
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					map.set(identifier, module);
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				}
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				for (const pair of moduleWithoutCase) {
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					const map = pair[1];
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					if (map.size > 1) {
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						compilation.warnings.push(
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							new CaseSensitiveModulesWarning(
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								map.values(),
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								compilation.moduleGraph
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							)
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						);
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					}
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				}
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			});
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		});
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	}
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}
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module.exports = WarnCaseSensitiveModulesPlugin;
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