Naver D2 covered WebAssembly (wasm) in the third article of its series "The State of JavaScript in 2026 and Beyond." The piece, written as of October 2026, summarizes the changes of the six years since 2020.
In 2020, wasm was closer to a compile target with just four numeric types and linear memory. Exchanging strings with JavaScript required glue code that wrote bytes into memory and passed along their location.
This article looks at what became of the items listed back then as upcoming work: threads, SIMD, reference types, tail calls, and ESM integration. It then introduces wasm 2.0 and 3.0, proposals under discussion, and the languages that can now be used on the web thanks to WasmGC.
Outside the browser, it explains how the component model and WASI have changed the ecosystem and which wasm packages JavaScript developers use without realizing it. It also covers how AI tools and agents are changing the way wasm is used. The series has four parts in total, and the last one covers libraries and frameworks.
Source: Naver D2
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