Interface: LaneSignalHandlerBuilder<TIn, TStepIds, TPayload>

Defined in: builders/lane-signal-handler-builder.ts:15

Fluent sub-builder for live signal steering and step rewind (lane.onSignal(sig, $ => ...)).

Configures the synchronous work-item input reducer (.update(mapper)) and the type-checked target step or branch ID in the bound flow (.rewindTo(stepId, options)).

Type Parameters

Type Parameter	Default type	Description
TIn	unknown	Validated lane work item input type.
TStepIds extends string	string	Union of literal step and branch IDs in the lane's flow.
TPayload	unknown	Signal payload type.

Methods

rewindTo()

rewindTo(stepId, options?): LaneSignalHandlerBuilder<TIn, TStepIds, TPayload>;

Defined in: builders/lane-signal-handler-builder.ts:43

Constrains and sets the target step or branch ID in flow.nodes to rewind execution to.

Optionally binds a ScopeRewindHookASTNode executed when rewinding a Tier-1 'scope'.

Parameters

Parameter	Type	Description
stepId	TStepIds	Literal step or branch ID in the bound FlowNode.
options?	{ onRewind?: MaybeBuilder<ScopeRewindHookASTNode<unknown>>; }	Optional scope rewind hook.
options.onRewind?	MaybeBuilder<ScopeRewindHookASTNode<unknown>>	-

Returns

LaneSignalHandlerBuilder<TIn, TStepIds, TPayload>

New immutable signal handler builder.

---

toAST()

toAST(): LaneSignalHandlerConfig<TIn, TStepIds, TPayload>;

Defined in: builders/lane-signal-handler-builder.ts:55

Compiles the signal handler configuration into a frozen LaneSignalHandlerConfig.

Throws at builder compilation time if either .update(mapper) or .rewindTo(stepId) is missing.

Returns

LaneSignalHandlerConfig<TIn, TStepIds, TPayload>

Deeply frozen lane signal handler configuration.

---

update()

update(mapper): LaneSignalHandlerBuilder<TIn, TStepIds, TPayload>;

Defined in: builders/lane-signal-handler-builder.ts:29

Binds the synchronous reducer updating the active run's input from (currentInput, signalPayload).

Required before .toAST() can compile a valid LaneSignalHandlerConfig.

Parameters

Parameter	Type	Description
mapper	(current, payload) => TIn	Input update reducer.

Returns

LaneSignalHandlerBuilder<TIn, TStepIds, TPayload>

New immutable signal handler builder.