score:0

Accepted answer
  1. extend fruitlist type (eg: otherlist)
type fruitcode = 'apple' | 'banana'

interface fruitlist {
  name: fruitcode
}

// add this type
interface otherlist extends fruitlist {
  name: string
}
  1. use otherlist in setstate
const [arr, setarr] = usestate<otherlist[]>([])

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