Type 'string' is not assignable to type 'never' when using useFieldArray with TS

[imed-computas]

I am trying to use useFieldArray to keep track of to arrays in a component which is part of a bigger form with strong typing. I take control and register of the validate ts type in as parameteres, but when i try to specify name for my useFieldArrays i get the the error message saying "Type 'string' is not assignable to type 'never' The expected type comes from property 'name' which is declared here on type 'UseFieldArrayProps<OurType, never, "id">'

Anyone experiencing that has experienced the same issue and found a solution?

[JamesWong1999]

can you share a simple codesandbox?

[rafaelfaria]

I am having the same problem.

  const {
    fields: urlFields,
    append: urlAppend,
    remove: urlRemove
  } = useFieldArray({ name: 'url', control });

[Moshyfawn]

can you share a simple codesandbox?

Same applies, please, try to create an isolated codessandbox with the issue reproduction. We're not wizards here, sadly ;)

[Valerika]

@rafaelfaria @imed-computas @Moshyfawn I had the same problem.
You need to add types of your array of fields
https://codesandbox.io/s/compassionate-engelbart-8q55jt?file=/src/App.tsx

[nimeshmaharjan1]

You need to have object[] not just string[] that was the issue for me

instead of emails: ['', ''] i had to do emails: [{email: ''}]

[prince-bansal]

Thanks man, this saved my day.

[mrstevedev]

saved my day too