Function getHTLCWitnessPreimage

getHTLCWitnessPreimage(
witness: string | P2PKWitness | HTLCWitness | undefined,
): string | undefined
Get preimage from a witness if present.
Parameters
- witness: string | P2PKWitness | HTLCWitness | undefined
  From a Proof.
Returns string | undefined
Preimage if present.

Throws
If a serialized witness is oversized.
- Defined in src/crypto/NUT14.ts:198