Function interrupt

interrupt<T = unknown>(scope: unknown, payload: InterruptPayload): T
Pause the run and ask for an answer.

On the first pass there is no answer pending, so this THROWS an InterruptSignal: the engine commits the stage's writes, builds the normal FlowchartCheckpoint with pauseData = your payload, and run() returns { paused: true, checkpoint }. Hand the checkpoint and the answer to executor.resume(checkpoint, answer) and the stage runs again from its top — this time the call returns answer.
Type Parameters
- T = unknown
Parameters
- scope: unknown
  The stage's scope (first argument, like decide()).
- payload: InterruptPayload
  { reason, expects? } — carried verbatim to the checkpoint.
Returns T
The resume input, typed as T. The engine does not validate it against expects — declare the shape you want and check it if the answer comes from somewhere you do not control.
Example
```
const decision = interrupt<{ approved: boolean }>(scope, { reason: 'Ship it?' });
if (!decision.approved) scope.$break('rejected by reviewer');
```
- Defined in lib/pause/interrupt.ts:151