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app_vue/node_modules/enhanced-resolve/lib/DirectoryExistsPlugin.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/** @typedef {import("./Resolver")} Resolver */
+/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
+
+module.exports = class DirectoryExistsPlugin {
+	/**
+	 * @param {string | ResolveStepHook} source source
+	 * @param {string | ResolveStepHook} target target
+	 */
+	constructor(source, target) {
+		this.source = source;
+		this.target = target;
+	}
+
+	/**
+	 * @param {Resolver} resolver the resolver
+	 * @returns {void}
+	 */
+	apply(resolver) {
+		const target = resolver.ensureHook(this.target);
+		resolver
+			.getHook(this.source)
+			.tapAsync(
+				"DirectoryExistsPlugin",
+				(request, resolveContext, callback) => {
+					const fs = resolver.fileSystem;
+					const directory = request.path;
+					if (!directory) return callback();
+					fs.stat(directory, (err, stat) => {
+						if (err || !stat) {
+							if (resolveContext.missingDependencies)
+								resolveContext.missingDependencies.add(directory);
+							if (resolveContext.log)
+								resolveContext.log(directory + " doesn't exist");
+							return callback();
+						}
+						if (!stat.isDirectory()) {
+							if (resolveContext.missingDependencies)
+								resolveContext.missingDependencies.add(directory);
+							if (resolveContext.log)
+								resolveContext.log(directory + " is not a directory");
+							return callback();
+						}
+						if (resolveContext.fileDependencies)
+							resolveContext.fileDependencies.add(directory);
+						resolver.doResolve(
+							target,
+							request,
+							`existing directory ${directory}`,
+							resolveContext,
+							callback
+						);
+					});
+				}
+			);
+	}
+};