Allow deprecating input values

[jhalborg]

Describe the bug

Using @deprecated on an input field throws the following error in this tool:

error Parsing error: [graphql-eslint] Error while loading schema: Directive "@deprecated" may not be used on ARGUMENT_DEFINITION

The spec has merged the ability to deprecate input values in this PR

To Reproduce Steps to reproduce the behavior:

Add a @deprecated notice on an input field, i.e.

type Mutation {
  myMutation(firstParam: String @deprecated(reason: "Value taken from token instead"), secondParam: String!): String!

Expected behavior
A normal lint warning on the deprecated field

[dimaMachina]

what version of graphql are you using?

[dimaMachina]

Closing due silence, feel free to reply and I’ll reopen