Prop types optional

You can declare that a prop is a specific JS primitive. This is the correct way to do this. What is the best way of defining optional propTypes.

React Prop Types Different Required Props Depending on. Get list of optional props of a component in reactjs.

How do I specify optional prop types in flow? We define PropTypes by passing them as an option to createClass() : const Component = React. The React ` propTypes ` semantics differ from the ones from Flow and can cause subtle.

Optional `foo`, but if passe should NOT be nullable. Use the prop - types package and import from there instead. A nice way to check that an . React supports data validation through PropTypes.

By default the props for a component are optional.

Although propTypes are optional , you should . While this works for this simple example, there is one gotcha. The following PropTypes are exported in the ` PropTypes ` object. An Object having an optional center of type latLng and optional zoom of type number. There are some Babel plugins which will generate PropTypes from Flow types such as. To make one require just add.

But, I feel like my name would . When defining a component the propTypes configuration option can be used to identify if and how props should be validated. An icon className to use in an optional FontIcon in any version of the button. This will be used with the children prop.

If the floating or icon props are set to true,. An optional active index to use. This guide shows you how prop types can be used to improve your.

One very viable option would be to use JavaScript extensions such as . React has built-in PropTypes so you can typecheck easily. For optional props like this one, you might want to define a default value when . And you want to be able to . TypeScript supports embedding, type checking, and compiling JSX directly to JavaScript. State ( optional callback).