Module instant 

Portable timing abstraction for the evaluation engine.

• Default / native / portable-wasm: wraps std::time::Instant (zero JS deps).
• js-runtime feature (browser WASM via wasm-bindgen): wraps web_time::Instant, which calls performance.now() in the browser where std::time::Instant panics.

All engine code should use FzInstant rather than either concrete type directly.

Structs

FzInstant

A measurement of a monotonically nondecreasing clock. Opaque and useful only with Duration.