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node_modules/eslint/lib/cli-engine/formatters/formatters-meta.json

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+[
+  {
+    "name": "html",
+    "description": "Outputs results to HTML. The `html` formatter is useful for visual presentation in the browser."
+  },
+  {
+    "name": "json-with-metadata",
+    "description": "Outputs JSON-serialized results. The `json-with-metadata` provides the same linting results as the [`json`](#json) formatter with additional metadata about the rules applied. The linting results are included in the `results` property and the rules metadata is included in the `metadata` property.\n\nAlternatively, you can use the [ESLint Node.js API](../../integrate/nodejs-api) to programmatically use ESLint."
+  },
+  {
+    "name": "json",
+    "description": "Outputs JSON-serialized results. The `json` formatter is useful when you want to programmatically work with the CLI's linting results.\n\nAlternatively, you can use the [ESLint Node.js API](../../integrate/nodejs-api) to programmatically use ESLint."
+  },
+  {
+    "name": "stylish",
+    "description": "Human-readable output format. This is the default formatter."
+  }
+]

node_modules/eslint/lib/cli-engine/formatters/json-with-metadata.js

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+/**
+ * @fileoverview JSON reporter, including rules metadata
+ * @author Chris Meyer
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function (results, data) {
+	return JSON.stringify({
+		results,
+		metadata: data,
+	});
+};

node_modules/eslint/lib/cli-engine/formatters/json.js

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+/**
+ * @fileoverview JSON reporter
+ * @author Burak Yigit Kaya aka BYK
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function (results) {
+	return JSON.stringify(results);
+};

node_modules/eslint/lib/cli-engine/formatters/stylish.js

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+/**
+ * @fileoverview Stylish reporter
+ * @author Sindre Sorhus
+ */
+"use strict";
+
+const chalk = require("chalk"),
+	util = require("node:util"),
+	table = require("../../shared/text-table");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Given a word and a count, append an s if count is not one.
+ * @param {string} word A word in its singular form.
+ * @param {number} count A number controlling whether word should be pluralized.
+ * @returns {string} The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+	return count === 1 ? word : `${word}s`;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function (results) {
+	let output = "\n",
+		errorCount = 0,
+		warningCount = 0,
+		fixableErrorCount = 0,
+		fixableWarningCount = 0,
+		summaryColor = "yellow";
+
+	results.forEach(result => {
+		const messages = result.messages;
+
+		if (messages.length === 0) {
+			return;
+		}
+
+		errorCount += result.errorCount;
+		warningCount += result.warningCount;
+		fixableErrorCount += result.fixableErrorCount;
+		fixableWarningCount += result.fixableWarningCount;
+
+		output += `${chalk.underline(result.filePath)}\n`;
+
+		output += `${table(
+			messages.map(message => {
+				let messageType;
+
+				if (message.fatal || message.severity === 2) {
+					messageType = chalk.red("error");
+					summaryColor = "red";
+				} else {
+					messageType = chalk.yellow("warning");
+				}
+
+				return [
+					"",
+					String(message.line || 0),
+					String(message.column || 0),
+					messageType,
+					message.message.replace(/([^ ])\.$/u, "$1"),
+					chalk.dim(message.ruleId || ""),
+				];
+			}),
+			{
+				align: ["", "r", "l"],
+				stringLength(str) {
+					return util.stripVTControlCharacters(str).length;
+				},
+			},
+		)
+			.split("\n")
+			.map(el =>
+				el.replace(/(\d+)\s+(\d+)/u, (m, p1, p2) =>
+					chalk.dim(`${p1}:${p2}`),
+				),
+			)
+			.join("\n")}\n\n`;
+	});
+
+	const total = errorCount + warningCount;
+
+	if (total > 0) {
+		output += chalk[summaryColor].bold(
+			[
+				"\u2716 ",
+				total,
+				pluralize(" problem", total),
+				" (",
+				errorCount,
+				pluralize(" error", errorCount),
+				", ",
+				warningCount,
+				pluralize(" warning", warningCount),
+				")\n",
+			].join(""),
+		);
+
+		if (fixableErrorCount > 0 || fixableWarningCount > 0) {
+			output += chalk[summaryColor].bold(
+				[
+					"  ",
+					fixableErrorCount,
+					pluralize(" error", fixableErrorCount),
+					" and ",
+					fixableWarningCount,
+					pluralize(" warning", fixableWarningCount),
+					" potentially fixable with the `--fix` option.\n",
+				].join(""),
+			);
+		}
+	}
+
+	// Resets output color, for prevent change on top level
+	return total > 0 ? chalk.reset(output) : "";
+};

node_modules/eslint/lib/cli-engine/hash.js

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+/**
+ * @fileoverview Defining the hashing function in one place.
+ * @author Michael Ficarra
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const murmur = require("imurmurhash");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+/**
+ * hash the given string
+ * @param {string} str the string to hash
+ * @returns {string} the hash
+ */
+function hash(str) {
+	return murmur(str).result().toString(36);
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = hash;

node_modules/eslint/lib/cli-engine/index.js

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+"use strict";
+
+const { CLIEngine } = require("./cli-engine");
+
+module.exports = {
+	CLIEngine,
+};

node_modules/eslint/lib/cli-engine/lint-result-cache.js

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+/**
+ * @fileoverview Utility for caching lint results.
+ * @author Kevin Partington
+ */
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const fs = require("node:fs");
+const fileEntryCache = require("file-entry-cache");
+const stringify = require("json-stable-stringify-without-jsonify");
+const pkg = require("../../package.json");
+const assert = require("../shared/assert");
+const hash = require("./hash");
+
+const debug = require("debug")("eslint:lint-result-cache");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../types").Linter.Config} Config */
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+const configHashCache = new WeakMap();
+const nodeVersion = process && process.version;
+
+const validCacheStrategies = ["metadata", "content"];
+const invalidCacheStrategyErrorMessage = `Cache strategy must be one of: ${validCacheStrategies
+	.map(strategy => `"${strategy}"`)
+	.join(", ")}`;
+
+/**
+ * Tests whether a provided cacheStrategy is valid
+ * @param {string} cacheStrategy The cache strategy to use
+ * @returns {boolean} true if `cacheStrategy` is one of `validCacheStrategies`; false otherwise
+ */
+function isValidCacheStrategy(cacheStrategy) {
+	return validCacheStrategies.includes(cacheStrategy);
+}
+
+/**
+ * Calculates the hash of the config
+ * @param {Config} config The config.
+ * @returns {string} The hash of the config
+ */
+function hashOfConfigFor(config) {
+	if (!configHashCache.has(config)) {
+		configHashCache.set(
+			config,
+			hash(`${pkg.version}_${nodeVersion}_${stringify(config)}`),
+		);
+	}
+
+	return configHashCache.get(config);
+}
+
+//-----------------------------------------------------------------------------
+// Public Interface
+//-----------------------------------------------------------------------------
+
+/**
+ * Lint result cache. This wraps around the file-entry-cache module,
+ * transparently removing properties that are difficult or expensive to
+ * serialize and adding them back in on retrieval.
+ */
+class LintResultCache {
+	/**
+	 * Creates a new LintResultCache instance.
+	 * @param {string} cacheFileLocation The cache file location.
+	 * @param {"metadata" | "content"} cacheStrategy The cache strategy to use.
+	 */
+	constructor(cacheFileLocation, cacheStrategy) {
+		assert(cacheFileLocation, "Cache file location is required");
+		assert(cacheStrategy, "Cache strategy is required");
+		assert(
+			isValidCacheStrategy(cacheStrategy),
+			invalidCacheStrategyErrorMessage,
+		);
+
+		debug(`Caching results to ${cacheFileLocation}`);
+
+		const useChecksum = cacheStrategy === "content";
+
+		debug(`Using "${cacheStrategy}" strategy to detect changes`);
+
+		this.fileEntryCache = fileEntryCache.create(
+			cacheFileLocation,
+			void 0,
+			useChecksum,
+		);
+		this.cacheFileLocation = cacheFileLocation;
+	}
+
+	/**
+	 * Retrieve cached lint results for a given file path, if present in the
+	 * cache. If the file is present and has not been changed, rebuild any
+	 * missing result information.
+	 * @param {string} filePath The file for which to retrieve lint results.
+	 * @param {Config} config The config of the file.
+	 * @returns {Object|null} The rebuilt lint results, or null if the file is
+	 *   changed or not in the filesystem.
+	 */
+	getCachedLintResults(filePath, config) {
+		const cachedResults = this.getValidCachedLintResults(filePath, config);
+
+		if (!cachedResults) {
+			return cachedResults;
+		}
+
+		/*
+		 * Shallow clone the object to ensure that any properties added or modified afterwards
+		 * will not be accidentally stored in the cache file when `reconcile()` is called.
+		 * https://github.com/eslint/eslint/issues/13507
+		 * All intentional changes to the cache file must be done through `setCachedLintResults()`.
+		 */
+		const results = { ...cachedResults };
+
+		// If source is present but null, need to reread the file from the filesystem.
+		if (results.source === null) {
+			debug(
+				`Rereading cached result source from filesystem: ${filePath}`,
+			);
+			results.source = fs.readFileSync(filePath, "utf-8");
+		}
+
+		return results;
+	}
+
+	/**
+	 * Retrieve cached lint results for a given file path, if present in the
+	 * cache and still valid.
+	 * @param {string} filePath The file for which to retrieve lint results.
+	 * @param {Config} config The config of the file.
+	 * @returns {Object|null} The cached lint results if present in the cache
+	 * and still valid; null otherwise.
+	 */
+	getValidCachedLintResults(filePath, config) {
+		/*
+		 * Cached lint results are valid if and only if:
+		 * 1. The file is present in the filesystem
+		 * 2. The file has not changed since the time it was previously linted
+		 * 3. The ESLint configuration has not changed since the time the file
+		 *    was previously linted
+		 * If any of these are not true, we will not reuse the lint results.
+		 */
+		const fileDescriptor = this.fileEntryCache.getFileDescriptor(filePath);
+
+		if (fileDescriptor.notFound) {
+			debug(`File not found on the file system: ${filePath}`);
+			return null;
+		}
+
+		const hashOfConfig = hashOfConfigFor(config);
+		const changed =
+			fileDescriptor.changed ||
+			fileDescriptor.meta.hashOfConfig !== hashOfConfig;
+
+		if (changed) {
+			debug(`Cache entry not found or no longer valid: ${filePath}`);
+			return null;
+		}
+
+		return fileDescriptor.meta.results;
+	}
+
+	/**
+	 * Set the cached lint results for a given file path, after removing any
+	 * information that will be both unnecessary and difficult to serialize.
+	 * Avoids caching results with an "output" property (meaning fixes were
+	 * applied), to prevent potentially incorrect results if fixes are not
+	 * written to disk.
+	 * @param {string} filePath The file for which to set lint results.
+	 * @param {Config} config The config of the file.
+	 * @param {Object} result The lint result to be set for the file.
+	 * @returns {void}
+	 */
+	setCachedLintResults(filePath, config, result) {
+		if (result && Object.hasOwn(result, "output")) {
+			return;
+		}
+
+		const fileDescriptor = this.fileEntryCache.getFileDescriptor(filePath);
+
+		if (fileDescriptor && !fileDescriptor.notFound) {
+			debug(`Updating cached result: ${filePath}`);
+
+			// Serialize the result, except that we want to remove the file source if present.
+			const resultToSerialize = Object.assign({}, result);
+
+			/*
+			 * Set result.source to null.
+			 * In `getCachedLintResults`, if source is explicitly null, we will
+			 * read the file from the filesystem to set the value again.
+			 */
+			if (Object.hasOwn(resultToSerialize, "source")) {
+				resultToSerialize.source = null;
+			}
+
+			fileDescriptor.meta.results = resultToSerialize;
+			fileDescriptor.meta.hashOfConfig = hashOfConfigFor(config);
+		}
+	}
+
+	/**
+	 * Persists the in-memory cache to disk.
+	 * @returns {void}
+	 */
+	reconcile() {
+		debug(`Persisting cached results: ${this.cacheFileLocation}`);
+		this.fileEntryCache.reconcile();
+	}
+}
+
+module.exports = LintResultCache;

node_modules/eslint/lib/cli-engine/load-rules.js

@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Module for loading rules from files and directories.
+ * @author Michael Ficarra
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("node:fs"),
+	path = require("node:path");
+
+const rulesDirCache = {};
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Load all rule modules from specified directory.
+ * @param {string} relativeRulesDir Path to rules directory, may be relative.
+ * @param {string} cwd Current working directory
+ * @returns {Object} Loaded rule modules.
+ */
+module.exports = function (relativeRulesDir, cwd) {
+	const rulesDir = path.resolve(cwd, relativeRulesDir);
+
+	// cache will help performance as IO operation are expensive
+	if (rulesDirCache[rulesDir]) {
+		return rulesDirCache[rulesDir];
+	}
+
+	const rules = Object.create(null);
+
+	fs.readdirSync(rulesDir).forEach(file => {
+		if (path.extname(file) !== ".js") {
+			return;
+		}
+		rules[file.slice(0, -3)] = require(path.join(rulesDir, file));
+	});
+	rulesDirCache[rulesDir] = rules;
+
+	return rules;
+};