chore: Add tests for calculateDeltaAndAngle

vite.config.ts

@@ -24,6 +24,7 @@ export default defineConfig({
       reportsDirectory: './coverage/vitest',
       exclude: ['**/node_modules/**', '**/tests/**', '**/__mocks__/**'],
     },
+    includeSource: ['packages/*/src/**/*.{js,ts}'],
   },
   build: {
     /** If you set esmExternals to true, this plugins assumes that
@@ -33,4 +34,7 @@ export default defineConfig({
       esmExternals: true,
     },
   },
+  define: {
+    'import.meta.vitest': 'undefined',
+  },
 });