internal: Use eslint flat config

.changeset/honest-lamps-add.md

@@ -0,0 +1,5 @@
+---
+'@data-client/react': patch
+---
+
+fix: ExternalDataProvider correctly tracks unmounting

.circleci/config.yml

@@ -7,7 +7,7 @@ jobs:
   setup:
     docker: &docker
       # specify the version you desire here
-      - image: cimg/node:22.4
+      - image: cimg/node:22.7
     resource_class: large
     steps:
       - checkout:
@@ -48,6 +48,7 @@ jobs:
             - project/jest.config.js
             - project/tsconfig-base.json
             - project/tsconfig.json
+            - project/eslint.config.mjs
             - project/yarn.lock
             - project/tsconfig.test.json
             - project/package.json
@@ -61,7 +62,7 @@ jobs:
           at: ~/
       - run:
           command: |
-            yarn lint packages/*/src
+            yarn lint --quiet packages/*/src
 
   typecheck:
     docker: *docker

.github/renovate.json

@@ -11,7 +11,6 @@
     "downlevel-dts",
     "immutable",
     "@types/lodash",
-    "cimg/node",
     "nock"
   ],
   "timezone": "America/Chicago",

eslint.config.mjs

@@ -0,0 +1,50 @@
+import anansiPlugin from '@anansi/eslint-plugin';
+import globals from 'globals';
+
+export default [
+  ...anansiPlugin.configs.typescript,
+  {
+    ignores: [
+      '**/lib*/*',
+      '**/dist*/*',
+      'packages/*/native/*',
+      '**/node_modules*/*',
+      'node_modules/*',
+      '**/src-*-types/*',
+    ],
+  },
+  {
+    files: ['**/*.?(m|c)ts?(x)'],
+    rules: {
+      '@typescript-eslint/no-empty-function': 'warn',
+    },
+  },
+  {
+    files: ['**/__tests__/**/*.?(m|c)ts?(x)', '**/*.test?(.*).?(m|c)ts?(x)'],
+    rules: {
+      '@typescript-eslint/no-unused-expressions': 'off',
+    },
+  },
+  {
+    files: ['**/*.?(m|c)js?(x)'],
+    settings: {
+      'import/resolver': {
+        node: {},
+      },
+    },
+  },
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        process: 'writable',
+      },
+    },
+  },
+  {
+    files: ['examples/**/*.?(m|c)ts?(x)'],
+    rules: {
+      'no-console': 'off',
+    },
+  },
+];