Function prepend

prepend<FIN, RESTIN, LSF, LSREST>(
    fnUniqueIdentifier: keyof LSF & string,
    f: (i: FIN) => Promise<RESTIN>,
    rest: StepFunction<RESTIN, LSREST>,
): StepFunction<FIN, LSF & LSREST>
Executes the provided function
Type Parameters
- FIN
- RESTIN
- LSF
- LSREST
Parameters
- fnUniqueIdentifier: keyof LSF & string
  a globally unique identifier for
- f: (i: FIN) => Promise<RESTIN>
  and pass the input to the provided step function
- rest: StepFunction<RESTIN, LSREST>
Returns StepFunction<FIN, LSF & LSREST>
the composed step function
- Defined in lang/stepfunctionLang.ts:268