chore(eslint): add flat ESLint config to enable JSX parsing

Author: karianna

eslint.config.js

@@ -0,0 +1,26 @@
+import babelParser from '@babel/eslint-parser';
+import reactPlugin from 'eslint-plugin-react';
+
+export default [
+	{
+		ignores: ['**/public/**', '**/node_modules/**'],
+	},
+	{
+		files: ['**/*.js', '**/*.jsx'],
+		languageOptions: {
+			parser: babelParser,
+			parserOptions: {
+				requireConfigFile: false,
+				ecmaVersion: 2020,
+				sourceType: 'module',
+				ecmaFeatures: { jsx: true },
+			},
+			globals: { window: 'readonly', document: 'readonly' },
+		},
+		plugins: { react: reactPlugin },
+		rules: {
+			// basic recommended ruleset
+		},
+	},
+];
+