Function mapHandlers

mapHandlers<
    TEndpoints extends
        Record<string, Record<string, AnyEndpoint | AnySubscriptionBuilder>>,
>(
    endpoints: TEndpoints,
    handlers: HandlerMap<TEndpoints>,
): HandlerMapping
Binds a complete set of endpoint builders to their handlers with compile-time exhaustiveness checking.

TypeScript will report an error if any endpoint in endpoints is missing from handlers, or if a handler's signature does not match its endpoint. This is analogous to how @cleverbrush/mapper tracks unmapped properties at the type level.
Type Parameters
- TEndpoints extends Record<string, Record<string, AnyEndpoint | AnySubscriptionBuilder>>
Parameters
- endpoints: TEndpoints
  A grouped object of extended endpoint builders (e.g. after .authorize() / .inject()).
- handlers: HandlerMap<TEndpoints>
  A matching grouped object of handler functions or { handler, middlewares } entries.
Returns HandlerMapping
A HandlerMapping to pass to ServerBuilder.handleAll().
Example
```
const mapping = mapHandlers(endpoints, {
    auth: {
        register: registerHandler,
        login: loginHandler,
    },
    todos: {
        list: listTodosHandler,
        create: createTodoHandler,
        export: { handler: exportHandler, middlewares: [auditLog] },
    },
});

server.handleAll(mapping);
```
- Defined in libs/server/src/Endpoint.ts:337