AuthValidator.jsx

function AuthValidator({ token, children, ...rest }) {
  if (isAuthed(token)) {
    return children({ authenticated: true })
  }
  return children({ authenticated: false })
}

const DeactivatorInput = ({ style, ...rest }) => (
  <input
    {...rest}
    style={{
      minWidth: 200,
      border: '1px solid rgba(0, 0, 0, 0.5)',
      borderRadius: 4,
      padding: '6px 12px',
      ...style,
    }}
    placeholder="Search a user to deactivate"
  />
)

function App() {
  return (
    <div>
      <AuthValidator token="abc123">
        {({ authenticated }) => <DeactivatorInput disabled={!authenticated} />}
      </AuthValidator>
    </div>
  )
}