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884: Typescript Just Got 10x Faster

Mar 11, 2025

In a fascinating discussion, Anders Hejlsberg, the creator of TypeScript and lead architect at Microsoft, and Daniel Rosenwasser dive into TypeScript's groundbreaking shift to native code. They unveil how this leap enhances compilation speed, reducing large project compile times dramatically. The conversation covers the challenges and intricacies of porting to Go, the benefits of parallel type checking, and how these advancements pave the way for AI-assisted development. Expect a deep dive into performance evolution and community engagement in tech!

01:08:44

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Episode guests

Anders Hejlsberg

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Quick takeaways

The porting of TypeScript to native code in Go significantly enhances overall performance, notably reducing compilation times by up to tenfold.

Utilizing multi-core processors and shared memory concurrency allows parallel execution of parsing, greatly optimizing TypeScript’s compile times.

Anticipated improvements include AI-driven language features for code refactoring and suggestions, evolving the TypeScript development experience beyond speed enhancements.

Deep dives

Announcement of TypeScript Compiler Porting

The TypeScript team announced a significant upgrade: the TypeScript compiler and toolset are being ported to native code, promising a tenfold increase in performance. This upgrade encompasses the entire pipeline, including parsing, type checking, and emitting, enabling users to experience vastly reduced compile times. A practical demonstration revealed that the popular Visual Studio Code, previously taking over a minute to compile, now only needs five to six seconds for the same task. This improvement is designed to create a seamless plug-and-play replacement for the current toolset, ensuring the same functionality but at an accelerated speed.

Intro

2min

Revolutionizing TypeScript Compilation Speed

2min

TypeScript's Performance Evolution

18min

State Management and Performance in TypeScript

14min

Optimizing TypeScript Compilation Through Parallel Type Checking

6min

Enhancing TypeScript Performance and Compiler Evolution

22min

Enhancing TypeScript: Community Insights and Performance Profiling

4min

Innovative Heating Solutions and Open Source Collaboration

2min

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