It is prefaced with with as React "Higher Order Components" (HOCs) frequently are, because there is one HOC, that can be run just once and is then destroyed, but withMethods also entails a library besides it's HOC functionality.
Components express their intent to register methods as follows:
componentDidMount() {
withMethods.beforeRegistration(this);
}
It entails a sort of pre-registration as the actual entries are not put into the registry until the root element calls registerRoot (this is done from the componentDidMount method of rootHOC). This is so that all other components will have been able to pre-register, as the root component will be the last to mount.
The root component is the only one that will use the HOC, in a manner such as the following:
const RootWithMethods = withMethods.rootHOC(Root);
ReactDOM.render(
<RootWithMethods />,
document.getElementById('app-content')
);
The following is how a method from another component is called:
componentDidMount() {
setTimeout(() => { withMethods.forCmpName('Salutation').foo() });
}
Components do have to know the method names within other components, but this might be an OK solution for small applications, as opposed to the overkill that might be Redux.