Instrumenting WebAssembly

You can use emit in WebAssembly applications.

If you're targeting WASI via the wasm32-wasi target, you shouldn't need to do anything special to make emit work.

If you're targeting NodeJS or the web via the wasm32-unknown target, you can use emit_web to provide a clock and source of randomness. See the crate docs for more details. You can also treat wasm32-unknown like any other embedded target. See Instrumenting embedded applications for more details.