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guybedford / es-module-lexer

Low-overhead lexer dedicated to ES module parsing for fast analysis
MIT License
917 stars 48 forks source link

feat: asm.js build #86

Closed guybedford closed 2 years ago

guybedford commented 2 years ago

This adds an asm.js build of es-module-lexer, built using Emscripten 1.40.1 that still supported asm.js builds.

This fixes the cold start problem we have with the JS build, while still fully supporting CSP.

The output size minified and brotli'd is 4.7KB, as opposed to 5.2KB for the JS and 4.5KB for the Wasm builds.

With optimizations turned up, performance is comparable to Wasm!

GeoffreyBooth commented 2 years ago

With optimizations turned up, performance is comparable to Wasm!

Do you have any numbers on this?

guybedford commented 2 years ago

The numbers are in the readme perf diff - https://github.com/guybedford/es-module-lexer#benchmarks.