Module rust_wasm 

A Rust crate compiled to wasm that JavaScript tests load: a library wasm-bindgen exposes to a Node suite (Vitest, Jest, node:test), or the wasm of a web app a Playwright suite drives.

The crate is instrumented in the suite’s copy, and the suite’s own command builds it there (wasm-pack build, cargo build and wasm-bindgen), so the module the tests load carries the probes. Its regions live in the module’s memory; the JavaScript runtime remembers each instance and takes the regions at every test’s edges, in the test process and, through the Playwright fixture, in each page. Each take belongs to the test that just ended, exactly, and the run publishes them as a Rust run of its own.

Structs

RustWasmServer

The wasm crates of one Cargo workspace JavaScript tests may load.