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node_modules/stylelint/lib/utils/getFileIgnorer.mjs

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+import { existsSync, readFileSync } from 'node:fs';
+import { isAbsolute, resolve } from 'node:path';
+import ignore from 'ignore';
+
+import { DEFAULT_IGNORE_FILENAME } from '../constants.mjs';
+
+/**
+ * @typedef {import('stylelint').LinterOptions} LinterOptions
+ *
+ * @param {Pick<LinterOptions, 'ignorePath' | 'ignorePattern'> & { cwd: string }} options
+ * @returns {import('ignore').Ignore}
+ */
+export default function getFileIgnorer({ ignorePath, ignorePattern, cwd }) {
+	const ignorer = ignore.default();
+	const ignorePaths = [ignorePath || []].flat();
+
+	if (ignorePaths.length === 0) {
+		ignorePaths.push(DEFAULT_IGNORE_FILENAME);
+	}
+
+	for (const ignoreFilePath of ignorePaths) {
+		const absoluteIgnoreFilePath = isAbsolute(ignoreFilePath)
+			? ignoreFilePath
+			: resolve(cwd, ignoreFilePath);
+
+		if (!existsSync(absoluteIgnoreFilePath)) continue;
+
+		const ignoreText = readFileSync(absoluteIgnoreFilePath, {
+			// utf must remain lowercased to hit the fast path
+			// see nodejs/node#49888
+			encoding: 'utf8',
+			flag: 'r',
+		});
+
+		ignorer.add(ignoreText);
+	}
+
+	if (ignorePattern) ignorer.add(ignorePattern);
+
+	return ignorer;
+}