March 11th, 2025 × #typescript#performance#compiler
Typescript Just Got 10x Faster
The TypeScript team has ported the TypeScript compiler and tools to native Node code, realizing about a 10x performance improvement across parsing, type checking and emitting.
Wes and Scott talk with Anders Hejlsberg and Daniel Rosenwasser about TypeScript’s leap to native code. They discuss the challenges, trade-offs, and the decision to port TypeScript to Go, unlocking faster compilation, better concurrency, and new possibilities for AI-assisted development.
Show Notes
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00:00 Welcome to Syntax!
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00:38 TypeScript compiler goes native
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05:24 Challenges in rebuilding TypeScript
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08:49 How long has this been in development?
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10:32 What does porting TypeScript to native entail?
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16:36 Why choose Go?
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26:48 The porting process
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35:27 Type checking and parallel compilation
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42:36 Fixing TypeScript's performance bottlenecks
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49:09 Large TypeScript codebases
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54:11 What's the timeline for the new compiler?
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58:39 Optimization and AI
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01:00:32 New features?
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01:04:15 Sick Picks + Shameless Plugs
Sick Picks
- Daniel: pprof-it
- Anders: USB Hand Warmers
Shameless Plugs
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