- const ret: number = bindings.ClosingSigned_new(bindings.encodeUint8Array(bindings.check_arr_len(channel_id_arg, 32)), fee_satoshis_arg, bindings.encodeUint8Array(bindings.check_arr_len(signature_arg, 64)), fee_range_arg == null ? 0 : CommonBase.get_ptr_of(fee_range_arg) & ~1);
+ const ret: bigint = bindings.ClosingSigned_new(bindings.encodeUint8Array(bindings.check_arr_len(channel_id_arg, 32)), fee_satoshis_arg, bindings.encodeUint8Array(bindings.check_arr_len(signature_arg, 64)), fee_range_arg == null ? 0n : CommonBase.get_ptr_of(fee_range_arg));