What are you trying to accomplish? After this patch, if sign is false the function does nothing and returns nothing.

@tbfleming When sign is false, only serializedTransaction without signatures is returned.
It is used to create transaction object for msig(multi sig).

Ok. I see it now. Please make the following changes:

• signatures should be a required member of PushTransactionArgs
• For this case, set signatures to []
• Remove the extra empty lines
• Bug: const pushTransactionArgs = should be pushTransactionArgs =

oh, i got it. i pushed commit about changes