Update

node_modules/eslint/lib/services/warning-service.js

@@ -93,6 +93,19 @@ class WarningService {
 			"ESLintPoorConcurrencyWarning",
 		);
 	}
+
+	/**
+	 * Emits a warning when eslint-env configuration comments are found.
+	 * @param {string} filename The name of the file being linted.
+	 * @param {number} line The line number of the comment.
+	 * @returns {void}
+	 */
+	emitESLintEnvWarning(filename, line) {
+		this.emitWarning(
+			`/* eslint-env */ comments are no longer recognized when linting with flat config and will be reported as errors as of v10.0.0. Replace them with /* global */ comments or define globals in your config file. See https://eslint.org/docs/latest/use/configure/migration-guide#eslint-env-configuration-comments for details. Found in ${filename} at line ${line}.`,
+			"ESLintEnvWarning",
+		);
+	}
 }
 
 module.exports = { WarningService };