feat(typescript): convert to typescript

update tests to tsx

match types version with dep versions

generic type

change to main/types to exports

change build to dist

change target to es6

update types/react to 18 to provide modern context type

switched to vitest and react-testing-library
updated to stricter eslint
update to react@17

.babelrc

@@ -1,5 +1,6 @@
 {
   "presets": [
-    "amex"
+    "amex",
+    "@babel/preset-typescript"
   ]
 }

.eslintrc.json

@@ -1,3 +1,50 @@
 {
-  "extends": "amex"
+  "extends": ["amex", "plugin:@typescript-eslint/recommended", "prettier"],
+  "settings": { "import/resolver": { "typescript": {} } },
+  "parserOptions": {
+    "project": true,
+    "extraFileExtensions": [".json"]
+  },
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint"],
+  "ignorePatterns": ["dist/**/*", "commitlint.config.js"],
+  "overrides": [
+    {
+      "files": ["__tests__/**"],
+      "extends": ["amex/test", "plugin:@typescript-eslint/recommended", "prettier"],
+      "rules": {
+        "import/extensions": [
+          "error",
+          "ignorePackages",
+          {
+            "ts": "never",
+            "tsx": "never",
+            "js": "never",
+            "jsx": "never"
+          }
+        ]
+      }
+    },
+    {
+      "files": ["src/**"],
+      "extends": [
+        "amex",
+        "plugin:@typescript-eslint/recommended",
+        "plugin:@typescript-eslint/strict-type-checked",
+        "prettier"
+      ],
+      "rules": {
+        "import/extensions": [
+          "error",
+          "ignorePackages",
+          {
+            "ts": "never",
+            "tsx": "never",
+            "js": "never",
+            "jsx": "never"
+          }
+        ]
+      }
+    }
+  ]
 }

.github/workflows/health-check.yml

@@ -25,6 +25,8 @@ jobs:
       run: npm ci
       env:
         NODE_ENV: development
+    - name: Build
+      run: npm run build
     - name: Run Test Script
       run: npm test
       env:

.github/workflows/release.yml

@@ -26,6 +26,8 @@ jobs:
           node-version-file: ".nvmrc"
       - name: Install dependencies
         run: npm ci
+      - name: Build
+        run: npm run build
       - name: Release
         env:
           GIT_AUTHOR_EMAIL: ${{ secrets.GIT_AUTHOR_EMAIL }}

.github/workflows/tests.yml

@@ -25,6 +25,8 @@ jobs:
       run: npm ci
       env:
         NODE_ENV: development
+    - name: Build
+      run: npm run build
     - name: Unit Tests
       run: npm run test:unit
       env:

.gitignore

@@ -1,3 +1,5 @@
 node_modules
 test-results
-.jest-cache
+coverage
+.jest-cache
+dist

__tests__/setup.ts

@@ -0,0 +1,9 @@
+import { afterEach } from 'vitest';
+import { cleanup } from '@testing-library/react';
+
+// Use locked timezone for predictable testing environment
+process.env.TZ = 'UTC';
+
+afterEach(() => {
+  cleanup();
+});