provide get* equivalent to the use* hooks that use remixContext

[BenoitAverty]

Hello,

In the discord since the supporter preview launch, there has been several questions about the remixContext parameter of the handleRequest function in entry.server.tsx.

I understand that it would be a big constraint on future development if this was public API, but there is a solution for some use-cases.

If I look at the "useMatches" hook for example. The code does not seem very tied to React. The only built-in hook used is useContext, but that's not needed since we're in the handleRequest function : we already have the context.

Remix could export the following function :

function getMatches(remixContext) {
  let { matches, routeData, routeModules } = remixContext;
  return matches.map(match => {
    let { pathname, params } = match;
    return {
      pathname,
      params,
      data: routeData[match.route.id],
      handle: routeModules[match.route.id].handle
    };
  });
}

this function could be used by user code without exposing more that is already exposed through the useMatches hook.