ReadonlyclientThe Apollo Client instance executing the request.
A map that stores extensions data to be sent to the server.
A function that gets the current context of the request. This can be used by links to determine which actions to perform. See managing context
The string name of the GraphQL operation. If it is anonymous,
operationName will be undefined.
The type of the GraphQL operation, such as query or mutation.
A DocumentNode that describes the operation taking place.
A function that takes either a new context object, or a function which takes in the previous context and returns a new one. See managing context.
A map of GraphQL variables being sent with the operation.
The currently executed operation object provided to an
ApolloLink.RequestHandlerfor each link in the link chain.