Add tests. Add exponential backoff contexts. Update error handling. Imrove Event Parser compatibility. Simplify SSE Session. Simplify Async Iterator.

package.json

@@ -6,6 +6,8 @@
     "build": "tsc",
     "test": "vitest run",
     "test:watch": "vitest",
+    "test:coverage": "vitest run --coverage",
+    "format": "prettier --write \"src/**/*.ts\"",
     "prepare": "npm run build"
   },
   "files": [
@@ -24,6 +26,7 @@
   "license": "ISC",
   "type": "module",
   "devDependencies": {
+    "prettier": "^3.9.5",
     "typescript": "^6.0.3",
     "vitest": "^4.1.7"
   }