Increasing the performance of WebAssembly Text Format parser by 350%
Summary
This article details a performance optimization for the WebAssembly Text Format (WAT) parser in wasm-language-tools, describing a shift from a parser combinator to a hand-written parser, token reuse, fast keyword checks, and tokenization optimizations. It presents concrete benchmarks showing a 350% speedup and includes code snippets and build notes. The write-up also discusses the benchmark scenario and practical implications for parser design in WASM tooling.