Does anyone know how to wrap a React component with React.memo
when one is using the connect
function from react-redux?
For example, how would you modify the following?
let Button = (props: Props) => (
<button onClick={props.click}>{props.value}</button>
);
Button = connect(
mapStateToProps,
mapDispatchToProps
)(Button);
I've tried:
let Button = React.memo((props: Props) => (
<button onClick={props.click}>{props.value}</button>
));
Button = connect(
mapStateToProps,
mapDispatchToProps
)(Button);
However, the function returned by connect
expects a component to be passed so it errors with:
Uncaught Error: You must pass a component to the function returned by connect. Instead received {"compare":null}
React.memo
is nothing but a HOC, so you can just use:
Without memo:
connect(
mapStateToProps,
mapDispatchToProps
)(Button);
With memo:
connect(
mapStateToProps,
mapDispatchToProps
)(React.memo(Button));
And even wrap to connect: (This should be the solution with connect)
React.memo(
connect(
mapStateToProps,
mapDispatchToProps
)(Button)
);
Like we do with withRouter
: withRouter(connect(...)())