tronbox migrating can not use the .at(contract address)

[bigopher]

when writing following migratation script in tronbox， there will happen to some error. but that can work well in truffle, please check it, thanks!
let a = await A.at('4174ca9d500f00601b8e1db69734c05e04b7b67be8');

the errors show that:
(node:3722) UnhandledPromiseRejectionWarning: TypeError: this.getContract is not a function
at TronWrap.tronWrap._getContract (/usr/local/Cellar/node/11.2.0/lib/node_modules/tronbox/build/webpack:/packages/tronwrap/index.js:135:1)
at /usr/local/Cellar/node/11.2.0/lib/node_modules/tronbox/build/webpack:/packages/truffle-contract/contract.js:413:1
at new Promise ()
at /usr/local/Cellar/node/11.2.0/lib/node_modules/tronbox/build/webpack:/packages/truffle-contract/contract.js:412:1
at new Promise ()

[MioGreen]

@sullof do you have any recommendation on how we can do .at function right now?

[sullof]

Can you point me to some sample code to replicate the error?

[sullof]

@bigopher @MioGreen
I just released a debug version of TronBox. Can you install it with

npm i -g tronbox-stage@latest

and use it as usual?

tronbox-stage test

and let me know if it works?
If so, I will propagate the fix to the main version.

[MioGreen]

@sullof I've received a new error:

(node:24235) UnhandledPromiseRejectionWarning: TypeError: code.replace is not a function
at /usr/local/lib/node_modules/tronbox-stage/build/webpack:/packages/truffle-contract/contract.js:416:1
at /usr/local/lib/node_modules/tronbox-stage/build/webpack:/packages/tronwrap/index.js:149:1
at
at process._tickCallback (internal/process/next_tick.js:188:7)

[sullof]

Can you post some code that allows me to replicate the issue, please?

[bigopher]

same the error to the description from MioGreen

[sullof]

I think the problem is that TronBox artifacts don't support .at(address). If you need that, you must use TronWeb.
We could add support for .at and .new in the future. I am leaving this issue opened as a reminder.