Issue encountered while declaring a variable as a function in TSX

Being new to TS, I encountered an interesting issue. The first code snippet worked without any errors:

interface Props {
  active: boolean
  error: any // unknown
  input: any // unknown
  onActivate: Function
  onKeyUp: Function
  onSelect: Function
  onUpdate: Function
  readonly: boolean
  selected: boolean
  value: string
}

However, upon reaching the next section, an error popped up saying:

Cannot redeclare block-scoped variable 'Function'.ts(2451)

This was due to every declaration of Function:

const EditableCell: React.FC<Props> = (props) => {
  const {
    input: any,
    value: string,
    selected: Function,
    active: boolean
    onSelect: Function,
    onActivate: Function,
    onUpdate: Function
  } = props

Interestingly, these two snippets were right after each other.

typescripttsx

Answer №1

When destructuring props, avoid specifying types for each property.

const {
  active,
  error, // unknown
  input, // unknown
  onActivate,
  onKeyUp,
  onSelect,
  onUpdate,
  readonly,
  selected,
  value
} = props

Warning -

Avoid using any and Function types, be specific with the types you use!

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