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node_modules/stylelint/lib/getConfigForFile.mjs

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+import { join } from 'node:path';
+import process from 'node:process';
+
+import { cosmiconfig } from 'cosmiconfig';
+
+import { augmentConfigFull } from './augmentConfig.mjs';
+import configurationError from './utils/configurationError.mjs';
+
+const IS_TEST = process.env.NODE_ENV === 'test';
+const STOP_DIR = IS_TEST ? process.cwd() : undefined;
+
+/** @import {Config as StylelintConfig, CosmiconfigResult as StylelintCosmiconfigResult, InternalApi as StylelintInternalApi} from 'stylelint' */
+
+/**
+ * @param {StylelintInternalApi} stylelint
+ * @param {string} [searchPath]
+ * @param {string} [filePath]
+ * @returns {Promise<StylelintCosmiconfigResult>}
+ */
+export default async function getConfigForFile(
+	stylelint,
+	searchPath = stylelint._options.cwd,
+	filePath,
+) {
+	const optionsConfig = stylelint._options.config;
+	const cwd = stylelint._options.cwd;
+
+	if (optionsConfig) {
+		const filePathAsCacheKey = filePath ?? '';
+		/** @type {Map<string, StylelintCosmiconfigResult>} */
+		const cachedForFiles = stylelint._specifiedConfigCache.get(optionsConfig) ?? new Map();
+		const cached = cachedForFiles.get(filePathAsCacheKey);
+
+		if (cached) {
+			return cached;
+		}
+
+		const augmentedResult = await augmentConfigFull(stylelint, filePath, {
+			config: optionsConfig,
+			// Add the extra path part so that we can get the directory without being
+			// confused
+			filepath: join(cwd, 'argument-config'),
+		});
+
+		cachedForFiles.set(filePathAsCacheKey, augmentedResult);
+		stylelint._specifiedConfigCache.set(optionsConfig, cachedForFiles);
+
+		return augmentedResult;
+	}
+
+	const configExplorer = cosmiconfig('stylelint', {
+		transform: (cosmiconfigResult) => augmentConfigFull(stylelint, filePath, cosmiconfigResult),
+		stopDir: STOP_DIR,
+		searchStrategy: 'global', // for backward compatibility
+	});
+
+	let config = stylelint._options.configFile
+		? await configExplorer.load(stylelint._options.configFile)
+		: await configExplorer.search(searchPath);
+
+	if (!config) {
+		config = await configExplorer.search(cwd);
+	}
+
+	if (!config) {
+		return Promise.reject(
+			configurationError(`No configuration provided${searchPath ? ` for ${searchPath}` : ''}`),
+		);
+	}
+
+	return config;
+}