Add comprehensive tests for ancillary functionality

.github/workflows/ci.yml

@@ -0,0 +1,135 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - main
+      - master
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  lint:
+    name: Lint & Format
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run Biome
+        run: npm run lint
+
+  typecheck:
+    name: Type Check
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run TypeScript type checking
+        run: npm run typecheck
+
+  test:
+    name: Test (Node ${{ matrix.node-version }})
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x, 18.x, 20.x]
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm run test:ci -- --ci --coverage --maxWorkers=2
+
+      - name: Upload coverage to Codecov
+        if: matrix.node-version == '18.x'
+        uses: codecov/codecov-action@v3
+        with:
+          fail_ci_if_error: false
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build CSS
+        run: npm run build-css
+
+      - name: Build project
+        run: npm run build
+
+      - name: Check dist directory
+        run: ls -la dist/
+
+  all-checks:
+    name: All CI Checks Passed
+    runs-on: ubuntu-latest
+    needs: [lint, typecheck, test, build]
+    if: always()
+
+    steps:
+      - name: Check if all jobs passed
+        run: |
+          if [[ "${{ needs.lint.result }}" != "success" ]]; then
+            echo "Lint job failed"
+            exit 1
+          fi
+          if [[ "${{ needs.typecheck.result }}" != "success" ]]; then
+            echo "Type check job failed"
+            exit 1
+          fi
+          if [[ "${{ needs.test.result }}" != "success" ]]; then
+            echo "Test job failed"
+            exit 1
+          fi
+          if [[ "${{ needs.build.result }}" != "success" ]]; then
+            echo "Build job failed"
+            exit 1
+          fi
+          echo "All checks passed!"

biome.json

@@ -0,0 +1,37 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.2.6/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
+  "files": {
+    "include": ["src/**/*.ts", "src/**/*.tsx"]
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space"
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "a11y": {
+        "noSvgWithoutTitle": "off"
+      },
+      "complexity": {
+        "noForEach": "off"
+      },
+      "correctness": {
+        "useExhaustiveDependencies": "warn"
+      },
+      "performance": {
+        "noDelete": "warn"
+      }
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single"
+    }
+  }
+}

jest.config.js

@@ -2,6 +2,7 @@ module.exports = {
   preset: 'ts-jest',
   testEnvironment: 'jsdom',
   roots: ['<rootDir>/src'],
+  setupFilesAfterEnv: ['<rootDir>/src/setupTests.ts'],
   moduleNameMapper: {
     '^@src/(.$)$': '<rootDir>/src/$1',
     '\\.(css)$': 'identity-obj-proxy',