Dispose every worker, rejecting all pending and future operations. Idempotent.
Run one operation on the least-loaded worker.
Run a batch of independent operations, fanned across the pool concurrently.
Resolves with results in the same order as operations.
In-flight task count per worker, indexed as the pool was constructed.
Initialize every worker (load WASM) in parallel. Atomic: if any worker fails, the pool disposes every worker and rejects with the original error, leaving the pool in a terminal disposed state.
Number of workers in the pool.