@ComputedFrom throws "Cannot set property 'dependencies' of undefined"

Question

I am trying to return initial number minus total array length, but i am getting an error. I tried with a simple single number but my problem still persists.

I don't understand what this error means:

"Cannot set property 'dependencies' of undefined"

What are the 'dependencies'?

Answer 1

the error you get is because @computedFrom should be used on properties, and not on functions.

change

getpersonListCount()
{
}

to

get personListCount()
{
}