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Type Alias: CreateContext

CreateContext = (baseContext) => Promise<Record<string, any>> | Record<string, any>

Defined in: createAppSyncResolverHandler.ts:47

Optional async function called once per request to enrich the resolver context. The returned object is shallow-merged into the base context and made available to every resolver.

Use this for per-request setup such as resolving a userId from Cognito. For authorization rules or before/after resolver logic, prefer middlewares.

Parameters​

ParameterType
baseContextBaseAppSyncContext

Returns​

Promise<Record<string, any>> | Record<string, any>

Example​

createAppSyncResolverHandler({
  schemaComposer,
  createContext: async ({ identity }) => ({
    userId: await getUserIdFromCognitoSub(identity?.sub),
  }),
});