React: checker is not a function

Question

I\'m getting this weird warning message in the console for my React app.

Warning: Failed propType: checker is not a function Check the render method of <

Answer 1

Reactv16

In my version of this error I had an array of objects:

data: PropTypes.shape([{
  id: PropTypes.number,
  ...
}])

The solution was to make an array of shapes like so:

data: PropTypes.arrayOf(
  PropTypes.shape({
    id: PropTypes.number,
    ...
  })
)