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Update docs about an existence of .elementType #2145

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merged 1 commit into from Jul 13, 2019
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Update docs about an existence of .elementType #2145

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3 changes: 3 additions & 0 deletions content/docs/typechecking-with-proptypes.md
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Expand Up @@ -57,6 +57,9 @@ MyComponent.propTypes = {
// A React element.
optionalElement: PropTypes.element,

// A React element type (ie. MyComponent).
optionalElementType: PropTypes.elementType,

// You can also declare that a prop is an instance of a class. This uses
// JS's instanceof operator.
optionalMessage: PropTypes.instanceOf(Message),
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