Writing

How to write a custom ESLint rule

Building a custom ESLint rule that bans a component, with a walk through traversing the AST, picking the right node type, and bundling the rule into a local plugin.

How to upload files to S3 using @aws-sdk/client-s3

Using @aws-sdk/client-s3 from Node.js to upload single files and entire folders to AWS S3, plus the gotchas you only learn the hard way (content type, leading slashes, Windows paths).

Snippet

Reading and writing files and directories in Go

Minimal recipes for reading a file, overwriting one, and walking a directory tree in Go, with a small end-to-end example that ties the three together.

Snippet

How to clamp text to N lines with CSS

A pure-CSS recipe for limiting a block of text to a fixed number of lines: handy when the content is dynamic and you don't want the layout to drift.

Snippet

How to integrate NProgress with Next.js

Snippets for showing a top loading bar while Next.js navigates between pages, using NProgress wired to the Pages Router events.

Snippet

GORM cheatsheet for Go

A handful of GORM snippets I keep around when I start a project in Go: installing, modeling, validations, many-to-many relations, hooks, and the queries I run most often.

Being Tech at Crehana: fail, but learn fast

What I learned in my first three years as a Frontend Developer at Crehana: failing fast, believing in what you build, and why people matter more than anything else.

Integrating webpack-dev-server + hot module replacement with Django

How to wire webpack-dev-server into a Django project to get hot module replacement, including a template tag that switches between development and production.

BDD in Ruby on Rails with RSpec and Capybara

Why controller specs often re-test what Rails already guarantees, and how feature tests with RSpec and Capybara let you test what the user actually sees.

How to test your Rails models with RSpec

An introduction to TDD in Ruby on Rails; the red-green-refactor cycle and how to test a model's validations with RSpec.