Can't respond to errors triggered in plugins

[ivandotv]

Issue workflow progress

Progress of the issue based on the Contributor Workflow

• [ ] 1. The issue provides a minimal reproduction available on Stackblitz.
  • Please install the latest @envelop/* packages that you are using.
  • Please make sure the reproduction is as small as possible.
• [ ] 2. A failing test has been provided
• [ ] 3. A local solution has been provided
• [ ] 4. A pull request is pending review

---

Describe the bug Can't respond to errors triggered in plugins. Errors do bubble up into the server response errors key however there is no way to respond to them (reshape, log etc..)

To Reproduce Consider this: Error thrown in useExtendContext can't be handled anywhere.

  plugins: [
    useExtendContext(() => {
      throw new Error('plugin error')
      return {}
    }),
    useErrorHandler((_errors, _args) => {
    // never triggered
    }),
    useApolloServerErrors({
      debug: true,
      formatter: (err: GraphQLError) => {
        // never triggered
        return err
      }
    }),
  ]
})

Expected behavior Respond to thrown errors before they are sent.

Environment:

• OS: Linux 64bit
• @envelop/...:
• "@envelop/apollo-server-errors": "^2.0.0", "@envelop/apollo-tracing": "^2.0.0", "@envelop/core": "^1.7.1", "@envelop/depth-limit": "^1.2.1", "@envelop/disable-introspection": "^2.0.0", "@envelop/graphql-middleware": "^2.0.0", "@envelop/parser-cache": "^3.0.0", "@envelop/rate-limiter": "^2.0.0", "@envelop/resource-limitations": "^1.0.1", "@envelop/validation-cache": "^3.0.0",
• NodeJS: 16.3.0

Additional context

[n1ru4l]

It is possible to register a handler for errors occurring during context creation in the onPluginInit hook: https://github.com/dotansimha/envelop/blob/2f41de9bba86218bbbde1c614679f222def4c628/packages/core/src/plugins/use-masked-errors.ts#L112-L116

I updated your issue with the reproduction template, can you please provide everything required for helping you (mainly a minimal reproduction on StackBlitz).

[YassinEldeeb]

Hey @ivandotv. It'd be great if you could provide a minimal reproduction example, so that we can help you