Error in updateChildren if method not declared (Cannot read property '_withTask' of undefined)

[mycoin]

Version

2.5.16

Reproduction link

https://output.jsbin.com/zusikefaju

Steps to reproduce

if the method was not declared, once update the children, an error like "Cannot read property '_withTask' of undefined" will occur.

although a warning like '[Vue warn]: Invalid handler for event "click": got undefined', but if developer disabled the warn, he will be difficult to resolve this problem.

What is expected?

no error happen. and the rendering should be continued

What is actually happening?

error occured

[PeachScript]

I think it is the responsibility of developers, not framework.

[fnlctrl]

Hi, thanks for filling this issue. Developers should enable warnings in development.

[mycoin]

@fnlctrl Yes, you are right. it is the responsibility of developers

But my fucking project did not enable warnings and I can not access the repertory to setup the framework, it makes me wasting too much time to fixed all the problems like "Cannot read property '_withTask' of undefined". 😂