| 1 | import { useMemo } from "react"; |
| 2 | import { useCommittedSlot, type CommittedSlot } from "./useCommittedSlot"; |
| 3 | |
| 4 | export type { CommandCancellationReason, CommandOutcome } from "./commandOutcome"; |
| 5 | |
| 6 | type AnyCommand = (...args: never[]) => unknown; |
| 7 | |
| 8 | function bindCommittedCommand<Command extends AnyCommand>(slot: CommittedSlot<Command>) { |
| 9 | return (...args: Parameters<Command>): ReturnType<Command> | undefined => { |
| 10 | if (slot.phase !== "ready") return undefined; |
| 11 | return slot.value?.(...args) as ReturnType<Command> | undefined; |
| 12 | }; |
| 13 | } |
| 14 | |
| 15 | /** Stable event entry; DOM ref attachment is a separate mutation-phase contract. */ |
| 16 | export function useCommittedCommand<Command extends AnyCommand>(command: Command): Command { |
| 17 | const slot = useCommittedSlot(command); |
| 18 | return useMemo(() => bindCommittedCommand(slot), [slot]) as Command; |
| 19 | } |
| 20 |