watch pr

[Gavin-yh]

I think when the first parameter of the watch API is a reactive object, when creating a getter in dowatch, the first parameter of callwitherrorhandling should be callback,

for example

 let obj = reactive({ name: 'gavin', age: 1 })
 watch(obj, () => {
        console.log('obj change', obj.name)
  })
 obj.name = 'sss'

If the first parameter of callwitherrorhandling is source, the execution error message is FN is no a function.

[liulinboyi]

https://vue-composition-api-rfc.netlify.app/api.html#watch

// watching a getter
const state = reactive({ count: 0 })
watch(
  () => state.count,
  (count, prevCount) => {
    /* ... */
  }
)

[Gavin-yh]

@liulinboyi Thanks. Why not add a layer of processing to directly listen to the properties of the reactive object, not in the form of functions, like Ref.

[liulinboyi]

@liulinboyi Thanks. Why not add a layer of processing to directly listen to the properties of the reactive object, not in the form of functions, like Ref.

@yyx990803