chore(no-sync): remove @typescript-eslint/utils

- Removes the dependency on `typescript`, a peer dependency of `@typescript-eslint/utils`

Author: risantos

lib/util/get-parser-services.js

@@ -1,24 +1,59 @@
 "use strict"
 
-const {
-    getParserServices: getParserServicesFromTsEslint,
-} = require("@typescript-eslint/utils/eslint-utils")
+const ERROR_MESSAGE_REQUIRES_PARSER_SERVICES =
+    "You have used a rule which requires type information, but don't have parserOptions set to generate type information for this file. See https://typescript-eslint.io/getting-started/typed-linting for enabling linting with type information."
+const ERROR_MESSAGE_UNKNOWN_PARSER =
+    'Note: detected a parser other than @typescript-eslint/parser. Make sure the parser is configured to forward "parserOptions.project" to @typescript-eslint/parser.'
+
+/**
+ * Checks if the parser seems to be `@typescript-eslint/parser`.
+ * - Implementation from `@typescript-eslint/utils`. @see https://github.com/typescript-eslint/typescript-eslint/blob/3e545207f0e34611f528128fc699b25091bc40b3/packages/utils/src/eslint-utils/parserSeemsToBeTSESLint.ts
+ *
+ * @param {string | undefined} parser - The parser to check.
+ * @returns {boolean} `true` if the parser seems to be `@typescript-eslint/parser`, `false` otherwise.
+ */
+function parserSeemsToBeTSESLint(parser) {
+    return !!parser && /(?:typescript-eslint|\.\.)[\w/\\]*parser/.test(parser)
+}
+
+/**
+ * Throws a detailed error if parser services are not available.
+ * @param {string | undefined} parser - The parser name to mention in the error message.
+ */
+function throwError(parser) {
+    const messages = [
+        ERROR_MESSAGE_REQUIRES_PARSER_SERVICES,
+        `Parser: ${parser || "(unknown)"}`,
+        !parserSeemsToBeTSESLint(parser) && ERROR_MESSAGE_UNKNOWN_PARSER,
+    ].filter(Boolean)
+    throw new Error(messages.join("\n"))
+}
 
 /**
  * Get the TypeScript parser services.
- * If TypeScript isn't present, returns `null`.
+ * - Partial implementation from `@typescript-eslint/utils`. @see https://github.com/typescript-eslint/typescript-eslint/blob/3e545207f0e34611f528128fc699b25091bc40b3/packages/utils/src/eslint-utils/getParserServices.ts
  *
- * @param {import('eslint').Rule.RuleContext} context - rule context
- * @returns {import('@typescript-eslint/parser').ParserServices | null}
+ * @param {import('eslint').Rule.RuleContext} context - Rule context.
+ * @returns {import('@typescript-eslint/parser').ParserServices | null} Parser services if TypeScript is being used, `null` otherwise.
+ * @throws {Error} If parser services are present but incomplete.
  */
 module.exports = function getParserServices(context) {
-    // Not using tseslint parser?
+    const parserServices = context.sourceCode.parserServices
+
     if (
-        context.sourceCode.parserServices?.esTreeNodeToTSNodeMap == null ||
-        context.sourceCode.parserServices.tsNodeToESTreeNodeMap == null
+        !parserServices ||
+        parserServices.esTreeNodeToTSNodeMap === null ||
+        parserServices.tsNodeToESTreeNodeMap === null
     ) {
+        // Not using TypeScript parser, or no type info: return null for legacy/JS support.
         return null
     }
 
-    return getParserServicesFromTsEslint(/** @type {any} */ (context), true)
+    if (parserServices.program === null) {
+        const parser =
+            context.parserPath || context.languageOptions?.parser?.meta?.name
+        throwError(parser)
+    }
+
+    return parserServices
 }

package.json

@@ -18,7 +18,6 @@
     },
     "dependencies": {
         "@eslint-community/eslint-utils": "^4.5.0",
-        "@typescript-eslint/utils": "^8.26.1",
         "enhanced-resolve": "^5.17.1",
         "eslint-plugin-es-x": "^7.8.0",
         "get-tsconfig": "^4.8.1",
@@ -122,4 +121,4 @@
     "imports": {
         "#test-helpers": "./tests/test-helpers.js"
     }
-}
+}