TypeSlayer - a TypeScript types performance tool

An introduction to TypeSlayer, a tool designed to analyze, visualize, and diagnose performance bottlenecks in TypeScript type checking.

TypeSlayer is a tool for diagnosing and fixing TypeScript performance problems. 00:00 introducing: TypeSlayer 00:44 what is this for? 01:45 how to use: `npx typeslayer` 01:59 Award Winners 02:42 Treemap 03:22 Perfetto 03:57 Search 04:53 Speedscope 05:20 MCP Server 05:50 what happens on the first boot 06:41 analyze-trace 07:43 Duplicate Package detection 09:13 a healthy treemap 09:22 a project with a problem 10:16 a real-world example 11:30 when you ignore an error, it just suppresses the diagnostic 13:06 depth limit that changes behavior 14:01 where's this going next? 14:44 monorepo support 15:05 up next: more MCP functions 16:32 where AI is most useful here 17:00 TypeSlayer can get you a raise 18:38 wanna typeslay your project? ------- Michigan TypeScript has never and will never have any sponsored content. All videos have always and will always have all possible ads or monetization turned off. If you wanna support what we do, the best thing you can do is take what you learn here back to your job and make software that puts smiles on your user’s faces. And if you REALLY like what we do, then you’ll love SquiggleConf (cross-language devtools conference, squiggleconf.com, CFP open now for this year's conf, September 18-19 2025 in Boston). BlueSky: bsky.app/profile/michigantypescript.com Twitter: twitter.com/MiTypeScript Mastodon: fosstodon.org/@MichiganTypeScript Instagram: instagram.com/michigantypescript Discord: discord.michigantypescript.com GitHub: github.com/MichiganTypeScript SoundCloud: soundcloud.com/michigan-typescript