Simon Willison’s Weblog


Monday, 5th August 2019

This is when I pull out “we don’t do that here.” It is a conversation ender. If you are the newcomer and someone who has been around a long time says “we don’t do that here”, it is hard to argue. This sentence doesn’t push my morality on anyone. If they want to do whatever it is elsewhere, I’m not telling them not to. I’m just cluing them into the local culture and values.

Aja Hammerly # 3:59 pm

Optimizing for the mobile web: Moving from Angular to Preact. Grubhub reduced their mobile web load times from 9-11s to 3-4s by replacing Angular with Preact (and replacing other libraries such as lodash with native JavaScript code). The conversion took 6 months and involved running Angular and Preact simultaneously during the transition—not a huge additional overhead as Preact itself is only 4KB. They used TypeScript throughout and credit it with providing a great deal of confidence and productivity to the overall refactoring. # 12:26 pm

2019 » August