issue with clear array errors in FieldArray

[DisaPadla]

When "errors" is empty the array is not been removed in "errors" object

Steps to reproduce the behavior:

1. remove value from the first input
2. submit button should be disabled
3. enter "10" to the first input
4. submit button still disabled
5. look at console.log(errors);. We still have an array in "errors" object

Expected behavior
submit button should be active

Codesandbox link
https://codesandbox.io/embed/react-hook-validate-trigger-sb1lj?fontsize=14&hidenavigation=1&theme=dark

discussion on spectrum
https://spectrum.chat/react-hook-form/help/strange-validation-behavior-for-fields-array~b6982a9b-25f3-4fc7-adf5-cd3e1f5a27f7

[bluebill1049]

https://codesandbox.io/s/react-hook-validate-trigger-sb1lj

[DisaPadla]

Another case which relates to this issue
https://spectrum.chat/react-hook-form/help/error-jumps-to-the-first-field-of-an-array~394e44a8-7cdd-4b3b-adf3-748ce444eca3

[bluebill1049]

please help testing on 4.9.9-beta.2

[DisaPadla]

@bluebill1049 I found only 4.9.9-beta.1 on codesandbox. I could test on my own project

[bluebill1049]

hey @DisaPadla you can install this beta on the CSB (ignore the drop down, just click install) :) make sure point to 'react-hook-form' instead of './src' folder.

[DisaPadla]

@bluebill1049 look at this example
https://codesandbox.io/s/formstate-is-not-still-valid-after-removing-items-ycu19

1. Append two items
2. make "onBlur" for both new items
3. Remove second and third items

Result
formState.isValid is still false. errors object contains test: [undefined]

[bluebill1049]

aha awesome thanks!

[DisaPadla]

I didn't find anything else.

[bluebill1049]

Awesome thanks a lot, I will patch that issue tonight. ❤️

[bluebill1049]

patched: https://codesandbox.io/s/formstate-is-not-still-valid-after-removing-items-ewufu making PR for the fix now :)

[DisaPadla]

formState.isValid is still false. Is it okay?

[bluebill1049]

u sure? works for me:

https://codesandbox.io/s/formstate-is-not-still-valid-after-removing-items-ewufu

try again, maybe i forgot to save.

[DisaPadla]

Oh, look at this case:

1. Append a second item
2. Append a third item
3. Make onBlur for the second item
4. Make onBlur for the third item
5. Click on Delete for the SECOND item
6. Click on Delete for the third item
   IsValid is false

But if you replace 5 and 6 steps, like
5. Click on Delete for the THIRD item
6. Click on Delete for the second item
all looks good

[bluebill1049]

interesting... you are right

[bluebill1049]

sorted :) https://codesandbox.io/s/formstate-is-not-still-valid-after-removing-items-ewufu thanks a lot for your testing effort.

[DisaPadla]

looks good for me!

[bluebill1049]

awesome! thanks for the verification.