The hottest Node.js Substack posts right now

Node.js has started to support ECMAScript Modules (ESM) natively with version 22, making it easier to use modern JavaScript modules alongside CommonJS (CJS) modules.
ESM allows for synchronous and asynchronous loading, but Node.js' support for it is currently experimental and comes with limitations like not supporting top-level 'await'.
The addition of synchronous loading for ESM in Node.js simplifies interoperability between ESM and CJS, easing the transition to ESM and potentially reducing module size in projects.

Create a serverless API using AWS Lambda and Node.js with TypeScript and Express.js.
Learn to configure an account on AWS Lambda, create access keys, build a Node.js application with Express.js, and deploy it on AWS Lambda.
Test the serverless API on AWS Lambda by sending requests to the created routes.

Frontend Mastery can help senior devs level up with deep insights on frontend trends and concepts.
Understanding local-first web development is essential for apps needing offline support and live collaboration.
Tools like Vercel AI templates, Qwik framework, and monitoring in React can boost productivity and improve user experience.

To reduce Docker image size for Node apps, remove dev dependencies from node_modules.
Consider bundling an app's dependencies with the app instead of including node_modules in the image.
Using shared lockfiles can complicate determining which dependencies to remove.

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Building a Shopify app can be fun and enjoyable.
Shopify provides helpful documentation, pre-built components, and a clear structure for app development.
Using Polaris design system ensures consistency in Shopify app user interface and experience.

Reading a large file at once in Node.js can be memory intensive, particularly for files above 1.4GB.
Utilizing the Readline API in Node.js to read files line by line can significantly reduce memory usage compared to reading the entire file at once.
Consider using npm modules like n-readlines for more advanced file reading needs, as they can efficiently read files line by line without loading the entire content into memory.

Deployment is crucial to make your application accessible to end users in a production environment, allowing realistic testing conditions and optimizing performance and scalability.
Heroku is a user-friendly platform for deploying applications, abstracting away technical details and offering configurable add-ons like logging and databases.
Steps to deploy a Node.js app on Heroku include creating an account, connecting to GitHub, setting up environment variables, and testing the deployed application.

Node-RED is a Node.js app for low-code workflow automation with a browser-based flow editor.
Node-RED is highly extensible and has a great community with lots of contributed workflows.
Node-RED has a complex setup process, requires some coding, and may not be suitable for non-coders.

The project structure for a Node.js backend, inspired by the Model View Controller (MVC) approach, includes folders for controllers, models, and utilities to maintain context information for HTTP requests effectively.
The use of a custom logger within the application without relying on external libraries provides flexibility and control over log formatting and content, allowing easy debugging and monitoring.
Switching from MySQL to Postgres for personal projects offers advantages in terms of transaction handling, materialized view creation, cost-effectiveness in hosting, and better performance for certain tasks.