first draft of moving to eslint flat config file

Author: julienw

.eslintignore

@@ -0,0 +1,53 @@
+import globals from "globals";
+import babelParser from "@babel/eslint-parser";
+import jest from "eslint-plugin-jest";
+import jestDom from "eslint-plugin-jest-dom";
+import testingLibraryReact from "eslint-plugin-testing-library/react";
+import vkBansalConfig  from "eslint-config-vkbansal";
+import vkBansalReactConfig  from "eslint-config-vkbansal/react";
+
+export default [
+  {
+    ignores: ["examples/bundle.js"],
+  },
+  vkBansalConfig,
+  vkBansalReactConfig,
+  {
+    languageOptions: {
+      parser: babelParser,
+      globals: {
+        ...globals.browser,
+      },
+    },
+    rules: {
+      "react/no-array-index-key": "off",
+    },
+    settings: {
+      react: {
+        version: "detect",
+      },
+    },
+  },
+  {
+    files: ["**/tests/*.js"],
+    plugins: {
+      jest,
+      "jest-dom": jestDom,
+      "testing-library": testingLibraryReact,
+    },
+    languageOptions: {
+      globals: {
+        ...globals.jest,
+      },
+    },
+    rules: {
+      ...jest.configs['flat/recommended'].rules,
+      ...jestDom.configs['flat/recommended'].rules,
+      "prefer-arrow-callback": "off",
+      "no-mixed-requires": "off",
+      // This disallows using direct Node properties (eg: firstChild), but we
+      // have legitimate uses:
+      "testing-library/no-node-access": "off",
+    }
+  },
+];

.eslintrc.yml

@@ -60,6 +60,7 @@
     "@babel/preset-env": "^7.24.3",
     "@babel/preset-react": "^7.24.1",
     "@babel/preset-stage-2": "^7.8.3",
+    "@eslint/js": "^9.1.1",
     "@testing-library/dom": "^10.0.0",
     "@testing-library/jest-dom": "^6.4.2",
     "@testing-library/react": "^14.3.0",
@@ -76,6 +77,7 @@
     "eslint-plugin-jest-dom": "^5.2.0",
     "eslint-plugin-react": "~7.34.1",
     "eslint-plugin-testing-library": "^6.2.0",
+    "globals": "^15.0.0",
     "history": "~5.3.0",
     "html-webpack-plugin": "~5.6.0",
     "jest": "~29.7.0",

eslint.config.js

@@ -1090,6 +1090,11 @@
   resolved "https://registry.yarnpkg.com/@eslint/js/-/js-9.0.0.tgz#1a9e4b4c96d8c7886e0110ed310a0135144a1691"
   integrity sha512-RThY/MnKrhubF6+s1JflwUjPEsnCEmYCWwqa/aRISKWNXGZ9epUwft4bUMM35SdKF9xvBrLydAM1RDHd1Z//ZQ==
 
+"@eslint/js@^9.1.1":
+  version "9.1.1"
+  resolved "https://registry.yarnpkg.com/@eslint/js/-/js-9.1.1.tgz#eb0f82461d12779bbafc1b5045cde3143d350a8a"
+  integrity sha512-5WoDz3Y19Bg2BnErkZTp0en+c/i9PvgFS7MBe1+m60HjFr0hrphlAGp4yzI7pxpt4xShln4ZyYp4neJm8hmOkQ==
+
 "@humanwhocodes/config-array@^0.12.3":
   version "0.12.3"
   resolved "https://registry.yarnpkg.com/@humanwhocodes/config-array/-/config-array-0.12.3.tgz#a6216d90f81a30bedd1d4b5d799b47241f318072"
@@ -3991,6 +3996,11 @@ globals@^14.0.0:
   resolved "https://registry.yarnpkg.com/globals/-/globals-14.0.0.tgz#898d7413c29babcf6bafe56fcadded858ada724e"
   integrity sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==
 
+globals@^15.0.0:
+  version "15.0.0"
+  resolved "https://registry.yarnpkg.com/globals/-/globals-15.0.0.tgz#9c6cd4e54327ceaab563b4c17ee5e9d181c03fd2"
+  integrity sha512-m/C/yR4mjO6pXDTm9/R/SpYTAIyaUB4EOzcaaMEl7mds7Mshct9GfejiJNQGjHHbdMPey13Kpu4TMbYi9ex1pw==
+
 globalthis@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/globalthis/-/globalthis-1.0.3.tgz#5852882a52b80dc301b0660273e1ed082f0b6ccf"