magarcia

How to write Claude Code skills that use third-party npm packages without a build step. Using npx bun gives you auto-installing dependencies, native TypeScript, and clean version pinning—the JavaScript equivalent of Python's uv run.

I built granola-cli to access my AI meeting notes from the command line. Now I can query my meetings with Claude Code, grep transcripts, and pipe action items directly into my workflows.

I shipped [`cross-keychain`](https://www.npmjs.com/package/cross-keychain), a TypeScript library that stores secrets in your OS's native credential manager — macOS Keychain, Windows Credential Manager, or Linux Secret Service. One API, zero plaintext config files.

I shipped [`env-interpolation`](https://www.npmjs.com/package/env-interpolation), a tiny TS helper that interpolates `${VAR}` and `${VAR:default}` inside config values. It walks strings in objects/arrays and never touches keys, so shapes stay stable and predictable—very config-oriented.

Working with AI for large-scale code changes can be frustrating. This article shares a technique that has helped our team reduce migration errors by 95% while making the process surprisingly enjoyable.

When building a digital project, ensuring your emails land safely and are trusted is paramount. But how do you navigate the maze of email security? Enter DMARC. Alongside its companions, SPF and DKIM, we delve deep into establishing email integrity and combating threats like email spoofing and phishing.

Something that everyone that has been working with JavaScript for a while has done is checking if a variable is undefined. In this article, I explain which are the different ways that you can use for it and the differences between them.

A minimum viable product (MVP) is often linked to the startup world but is a very useful tool in large corporations too. And to succeed with it is important to have engineering teams be completely engaged.

SOLID Principles are a valuable tool to write good object-oriented software. This article tries to put some light on the subject with simple explanations and examples for each principle using TypeScript.

Everyone has experienced how visiting a web site over a slow network connection usually takes ages to load. We are going to explore how to load different media content using the Network Information API.

About how to extract the business logic from the components of a React application using the BLoC pattern from Flutter, the new hooks API, and RxJS observables.

Redux Starter Kit is a toolset to make clean and readable code when working with React and Redux. See an example of how you can refactor an existing application getting all the profit from Redux Starter Kit.