Compile JavaScript to WASM for Web Performance Improvement

★ W3C TPAC 2023, Seville, 11–15 September ★

Different forms of Web technology in application

Mini App

Mini Game

Main Page

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JWST is a static compiler developed by Huawei Tech. & Beihang University for compiling JavaScript to WASM and native code

Uses QuickJS bytecode as input, and outputs LLVM IR.
Has the same pass rate as QuickJS for ECMA TEST 262.
When running SunSpider on Intel i7 and Kirin 990E CPUs, the WebAssembly code generated by JWST is~30% and ~50% faster than node.js for the first execution, respectively.

0.1x play

JWST (WASM)

JWST Native

V8-Cache

V8-No-Cache

Accelerating the Web performance by compiling Javascript code to WASM