JSPM

return http errors as stated in the document Problem Details for HTTP APIs RFC7807

Fix OpenAI 429 errors, timeouts, streaming issues, retry loops, and token cost spikes across OpenAI, Claude, Gemini, LangChain, OpenClaw, and other LLM stacks.

Automatic runtime error detection and logging for JavaScript applications

The ultimate, highly extensible error-handling library for Express, Fastify, React, and Node.js. Includes i18n, sensitive data masking, and critical error webhooks.

A powerful error formatter utility for Mongoose and Zod validation errors, designed for Express.js applications. Simplify and unify your API error handling with structured, user-friendly error messages.

Typed HTTP & domain error abstraction with RFC7807 support, multi-runtime compatibility, and adapters for Fetch and GraphQL

Node.js SDK for API Insight — automatic API failure monitoring, root cause analysis, and error grouping for Express, Fastify, NestJS, and more.

Enterprise-grade error primitives for Kitium products: rich metadata, HTTP/Problem Details mapping, observability, and registry-driven error governance.

A utility package for simplified error handling and management in Node.js applications.

Comprehensive error handling utility for Node.js & Express.js — custom error classes, async handler wrapper, Express middleware, HTTP error creators, retry logic, error chaining, and TypeScript support.

A simple JavaScript library to handle errors in APIs

Lightweight, extensible HTTP exceptions with proper status codes and framework-agnostic error handling for Node.js.

Lightweight TypeScript library to create, manage and log typed, structured errors for Node.js, Express and modern JavaScript apps. Simplify error handling, improve debugging, and keep your API responses clean and consistent.

Enhanced exception handling system for TypeScript applications with comprehensive error classes and debugging capabilities

A comprehensive HTTP error handling library for Node.js applications with typed error classes and standardized error responses.

Wrap form elements in this component to display API errors.

Core translation engine for turning backend API errors into user-friendly frontend messages

RFC 7807/9457 Problem Details for HTTP APIs - Standardized error responses for Fastify

Frontend SDK for translating API errors into user-friendly messages. No API keys required - completely free!

>

A lightweight toolkit to create and manage expressive, structured, and reusable error types. Perfect for APIs, services, and glitchy adventures

An error logger that reports to a remote endpoint

Federated error handling package with go-core-http-toolkit format support and logging integration

Production-grade, universal error-handling system for Node.js/Express + React. Single shared error contract for full-stack TypeScript applications.