Type Alias: MiddlewareServerFn()<TCtxIn, TExtension>

type MiddlewareServerFn<TCtxIn, TExtension> = (args) => Promise<unknown>;

type MiddlewareServerFn<TCtxIn, TExtension> = (args) => Promise<unknown>;

Defined in: packages/workflow-core/src/types.ts:399

A middleware extends the ctx for downstream middleware + the handler. The function receives the current ctx and a next callable taking { context: TExtension } — the literal context field is what TypeScript anchors on to infer TExtension from the call site.

plaintext

const requireUser = createMiddleware().server(async ({ ctx, next }) => {
  const user = await loadUser()
  return next({ context: { user } })
  // downstream ctx is now `prev & { user: User }`
})

const requireUser = createMiddleware().server(async ({ ctx, next }) => {
  const user = await loadUser()
  return next({ context: { user } })
  // downstream ctx is now `prev & { user: User }`
})

MiddlewareServerFn

Type Alias: MiddlewareServerFn()<TCtxIn, TExtension>

Type Parameters

TCtxIn

TExtension

Parameters

args

ctx

next

Returns

MiddlewareServerFn

Type Alias: MiddlewareServerFn()<TCtxIn, TExtension>#

Type Parameters#

TCtxIn#

TExtension#

Parameters#

args#

ctx#

next#

Returns#

Type Alias: MiddlewareServerFn()<TCtxIn, TExtension>

Type Parameters

TCtxIn

TExtension

Parameters

args

ctx

next

Returns