useless bind of arrow function

[jonenst]

Expected Behavior

SnackbarProvider code is simple

Current Behavior

SnackbarProvider code works but has useless bind or contextValue enqueueSnackbar
I stumbled on this while browsing the code
https://github.com/iamhosseindhv/notistack/blob/master/src/SnackbarProvider/SnackbarProvider.tsx#L51

export let enqueueSnackbar;

class SnackbarProvider extends Component<SnackbarProviderProps, State> {
    constructor(props: SnackbarProviderProps) {
        enqueueSnackbar = this.enqueueSnackbar;
        this.state = {
            contextValue: {
                enqueueSnackbar: this.enqueueSnackbar.bind(this),
        }}
    enqueueSnackbar = () => { ... }
}

since enqueueSnackbar is defined as an arrow function, you can't bind. It already has "this" to the instance of the class. That's why the global variable works without bind. the context value should be just se to enqueueSnackbar without binding. If I understood everything correctly.