Interface FolioOptions

Run a call shape natively for 16 calls after two runs that mostly replayed or fell back, then probe again. A shape is the entry, width, memory size and numeric arguments. Off by default.

Iterations assumed for loops with no constant bound when open prepares raw bytes.

Instruction budget per speculative region before it yields to the native head.

Host imports, memories, tables and globals as for native instantiation.

Bytes of read and write tracking a lane may retain.

Bind an existing single imported memory instead of allocating one from the module's limits.

Estimated iterations below which a proved kernel stays at its original entry.

Static admission threshold used when open prepares raw bytes; a prepared plan keeps its own.

Collect execution timings; disabled by default to keep the hot path small.

Exports that return a Promise because they suspend on async host imports.

Isolate count; defaults to up to four. One worker uses the native entry and creates no thread.