JavaScript

Read blog posts about building and managing your JavaScript apps. We share tips & tricks about performance optimization, monitoring, and observability.

AppSignal’s Next Level Of Front-end Error Tracking
JavaScript

AppSignal’s Next Level Of Front-end Error Tracking

We've launched line-of-code-based error grouping and sourcemapped backtraces in notifications.

By Thijs Cadier on

How to Handle Errors in React
JavaScript

How to Handle Errors in React

Let's look at the various ways you can handle React errors.

By Nikola Đuza on

Adding Redis & MySQL to AppSignal for Node.js with OpenTelemetry
JavaScript

Adding Redis & MySQL to AppSignal for Node.js with OpenTelemetry

Today, we launch 4 new integrations for Node.js: Redis, ioredis, MySQL, and MySQL2.

By Tom de Bruijn on

Build a Data Access Layer with PostgreSQL and Node.js
JavaScript

Build a Data Access Layer with PostgreSQL and Node.js

Find out how to create a Data Access Layer that communicates to PostgreSQL through Node.js

By Camilo Reyes on

Node.js 18 Release: What's New
JavaScript

Node.js 18 Release: What's New

Let's take a look at some of the major highlights from the recent Node.js 18 release.

By Nate Anderson on

What's New in React 18
JavaScript

What's New in React 18

Let's explore the new features and improvements in React 18.

By Nikola Đuza on

Principles of Object-oriented Programming in TypeScript
JavaScript

Principles of Object-oriented Programming in TypeScript

Find out about the three pillars of object-oriented programming in TypeScript and learn how TypeScript automates a lot of best practices.

By Camilo Reyes on

Build Serverless APIs with Node.js and AWS Lambda
JavaScript

Build Serverless APIs with Node.js and AWS Lambda

Learn how to create and deploy Lambda functions with Node.js and AWS SAM in this introduction to AWS Lambda.

By Ayooluwa Isaiah on

A Complete Guide to Node.js Process Management with PM2
JavaScript

A Complete Guide to Node.js Process Management with PM2

This in-depth guide runs you through the key features of Node.js process manager PM2.

By Ayooluwa Isaiah on

Patterns and Anti-patterns in Node.js
JavaScript

Patterns and Anti-patterns in Node.js

Let's explore some best practices and patterns for Node.js apps, that help avoid anti-patterns like callback hell.

By Aman Mittal on

Dependency Injection in JavaScript: Write Testable Code Easily
JavaScript

Dependency Injection in JavaScript: Write Testable Code Easily

Discover some great tools that will help you write testable code, including dependency injection libraries.

By Nate Anderson on

An Introduction to Deno: Is It Better than Node.js?
JavaScript

An Introduction to Deno: Is It Better than Node.js?

Learn about the key features of Deno, how it outperforms Node.js, as well as where it falls short.

By Ayooluwa Isaiah on

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