lit-ui-router-ssr / lit-ui-router-ssr / responder

Function: responder()

function responder(
   router, 
   responses, 
   options?
): Responder;

Defined in: packages/lit-ui-router-ssr/src/respond.ts:70

Answers response verdicts on router: settles it on the verdict's subpath, the request's query included, and runs the handler bound to the state it lands on with that transition's resolves and the request. The Response goes out as the handler built it; a HEAD gets it without its body.

It fits the fetch adapter's serveResponse bare: serveResponse: responder(router, responses).

Parameters

Parameter	Type	Description
router	UIRouter	the server router, its location installed with installServerLocation for the verdict's mount
responses	BoundResponses	the handlers, keyed by response state name
options?	SettleOptions	passed to settle

Returns

Responder

the responder; its promise rejects as settle does, so a resolve that throws fails the request before any handler runs

Throws

from the responder, an Error when the landed state has no handler in responses

Example

const responses = {
  badge: ({ resolves }) =>
    new Response(resolves.svg, { headers: { 'Content-Type': 'image/svg+xml' } }),
} satisfies ResponseHandlers<(typeof routes)[number], { badge: { svg: string } }>;

const handler = createFetchHandler(router, {
  serveShell,
  serveResponse: (verdict, request) => responder(pageRouter(), responses)(verdict, request),
});