Operations
Intercepting any GraphQL operation.
You can intercept any GraphQL operation regardless of its kind by defining a graphql.operation() handler. Unlike query and mutation handlers, the operation handler does not require you to specify the operation kind or name, only the response resolver.
graphql.operation(() => {})You can still access all the Response resolver arguments of the intercepted GraphQL operation, like
operationName,variables, etc.
This type of interception is handy when you want to delegate the request handling to an external source, like a mocked GraphQL schema. For that, see Schema-first mocking.