TIL | Jake Worth

TIL is my collection of short, technical daily learnings. 199 and counting.

Recognizing ASCII

When you see a list of numbers in a log or stack overflow, it’s often ASCII (American Standard Code for Information Interchange)! Here’s how to recognize and read it. ...

Who Owns This Program?

I’ve got a command docker on my machine. I need to upgrade it. So, who owns it? ...

Writing the DOM with fs

How can I output the entire DOM to a file in a JavaScript test? ...

Git Porcelain and Plumbing 🚽

Git has two kinds of commands: “porcelain” and “plumbing”. ...

Calculating With Bc

Today I accidentally I found a calculator on my computer, bc. Let’s look at it! ...

Rebuilds on Write With Nodemon

I’ve been hacking on a TypeScript file all day, but I need transpiled JavaScript for any testing. How did I reduce cycle time (and mitigate many chances to forget to build at all)? ...

MCP Stdio and Stdout

In MCP server code using stdio, you can’t use any functions that print to stdout. ...

TSC Watch

Watch and re-transpile any TypeScript file with: tsc file.ts --watch ...

Observable Exceptions That Don't Crash

Throwing a JavaScript Error test to your observability tool? There’s a better way. ...

npmrc "engine-strict"

Suppose your package.json specifies a Node engine of greater than or equal 24. Does this mean all engineers on your team will use Node 24? No, unless you use this one weird trick! ...