script.toBytes() returning empty bytes

[v4v2]

Describe the bug

The toBytes() method of Script is returning empty array on Signet.
I am using a port of BDK to typescript.

To Reproduce

  const inputs = await transaction.input()
  for (const index in inputs) {
      const input = inputs[index]
      const script = await input.scriptSig.toBytes() // THIS IS EMPTY
      input.scriptSig = script
      vin.push(input)
    }
// more ... code

the inputs is an array of TxIn with the fields sequence, previousOutput, witness, but the sigScript which is of type Script is returning empty bytes.

Expected behavior
Get the input script as bytes or hex.

Build environment

• BDK tag/commit: (how to figure out? I guess it is the latest....)
• OS+version: ArchLinux latest (using kernel 6.x)
• Rust/Cargo version: 1.83
• Rust/Cargo target: x86_64-unknown-linux-gnu

Additional context
Signet

Thanks in advance 👍

[v4v2]

if this is indeed a bug and not a misuse from my part, I offer help to fix 👍

[notmandatory]

You said you're using a port of BDK to typescript, which project is that?