Function authLink

authLink(
getToken: () => string | Promise<string | null> | null,
scheme?: string,
): GraphQLLink
Auth link: injects an authorization header into every request.
Parameters
- getToken: () => string | Promise<string | null> | null
  Function that returns the token (sync or async). Return null to skip header injection.
- scheme: string = "Bearer"
  Authorization scheme (default: "Bearer")
Returns GraphQLLink
A GraphQLLink that adds the authorization header
- Defined in src/graphql.ts:1321