Tom Ashworth

Notes, mostly.

Hi, I'm Tom. I write here about engineering, AI, and the work of building software. Say hello.

10 Apr 2026 litprompt: a markdown preprocessor for LLM prompts
A little tool that strips comments and resolves imports in markdown prompt files
24 Mar 2026 Phantom notifications from mise in iTerm
03 May 2025 Rethinking the Pareto Principle
The traditional usage of the 80/20 rule needs a rethink, from oversimplification to powerful learning tool.
16 Jun 2020 Book Notes: The Little Book of Beyond Budgeting
23 Mar 2020 Monte Carlo analysis for product development
Using probabilistic techniques for exploring data and modelling outcomes
24 Feb 2020 Product Management Reading List
08 Jul 2018 Project Lead
I wrote a guide to help my team's Project Leads. It might be useful for you too.
10 Feb 2018 Notes on launching GraphQL at Twitter
What have we learned in a year of GraphQL at Twitter?
22 Jan 2018 Notes on building CLI applications in Rust
28 Jun 2017 Point The Way
07 Apr 2017 Two Little Libraries
26 Sep 2016 Flight.js in 2016
03 Sep 2016 Some ways to think about state
20 Jul 2016 Technical Lead
Roles and responsibilities of a Tech Lead
27 Jun 2016 Building a search query parser
03 Jun 2016 Frontend Reading List
19 May 2016 The Impossible Toolchain?
17 May 2016 Physical and Mental Exertion
07 Dec 2015 Distributed Systems Reading List
25 Nov 2015 Promise & fetch cancellation
12 May 2015 Technical Debt
24 Mar 2015 Type-Checked Pseudo-Code
03 Dec 2014 Concerning separation
29 Oct 2014 Elm: building Native modules
31 Aug 2014 CSP and transducers in JavaScript
01 Mar 2014 How we use Twitter Flight in TweetDeck
24 Feb 2014 Rebase you interactively for great good
13 Feb 2014 Default to technology
04 Dec 2013 codebar
18 Oct 2013 Avoid lots of arguments
24 Apr 2013 casper: helpers and handlers for Express
24 Apr 2013 distra: static server & reverse proxy
11 Apr 2013 Keeping Open-Source Secrets
02 Feb 2013 Respond
20 Dec 2012 useful js: snippets
18 Dec 2012 A year to remember
15 Dec 2012 Please
17 Nov 2012 Code Sketching
16 Nov 2012 useful js: curry and bind
13 Nov 2012 Components & the Shadow DOM
08 Nov 2012 Collaboration
05 Nov 2012 A git workflow
02 Nov 2012 useful js: call & apply
02 Oct 2012 A Quick Intro to TypeScript
24 Sep 2012 How I'd Steal Your Passwords
22 Aug 2012 YRS and Broken Education
22 Jul 2012 Javascript App Hosting on S3
11 Jul 2012 How to write safer Javascript
06 Jul 2012 Quality & Code
03 Jul 2012 Grid, Set and Match
02 Jul 2012 Radio Silence
28 Jun 2012 Iteration
03 May 2012 Design for the Web: Fundamentals
01 May 2012 CSS Triangles + Animations = Pie Chart Spinner
28 Mar 2012 Consumption Addiction
27 Mar 2012 Responsive Workflow
26 Mar 2012 Create More Than You Consume
24 Mar 2012 The Hard Stuff
19 Mar 2012 In the Zone