version 3.1.4 (and 3.1.5) breaks addMocksToSchema from @graphql-tools/mock

[macrozone]

with "@apollo/react-hooks": "3.1.4", addMocksToSchema no longer works. The resulting schema won't return any data

Intended outcome:

using addMocksToSchema should make the apollo client returning mock data

Actual outcome:

it does not return any mock data, data is null always

How to reproduce the issue:

use these versions

"@graphql-tools/mock": "^6.0.12",

and

"@apollo/react-hooks": "^3.1.4",

Version

  System:
    OS: macOS 10.15.5
  Binaries:
    Node: 12.13.1 - ~/.nvm/versions/node/v12.13.1/bin/node
    Yarn: 1.21.1 - ~/git/panter/veloplus/veloplus-shop/veloplus-shop-fe/node_modules/.bin/yarn
    npm: 6.12.1 - ~/.nvm/versions/node/v12.13.1/bin/npm
  Browsers:
    Chrome: 83.0.4103.116
    Firefox: 76.0.1
    Safari: 13.1.1
  npmPackages:
    @apollo/react-hooks: 3.1.4 => 3.1.4 
    @apollo/react-ssr: 3.1.4 => 3.1.4 
    apollo: ^2.28.3 => 2.28.3 
    apollo-boost: ^0.4.3 => 0.4.4 
    apollo-cache-inmemory: ^1.6.2 => 1.6.3 
    apollo-link-batch-http: ^1.2.13 => 1.2.13 
    apollo-link-context: ^1.0.17 => 1.0.19 
    apollo-link-error: ^1.1.12 => 1.1.12 
    apollo-link-persisted-queries: ^0.2.2 => 0.2.2 
    apollo-link-schema: ^1.2.5 => 1.2.5 
    apollo-upload-client: ^12.1.0 => 12.1.0 

additional info

it works with version 3.1.3. so fixing the version is the current resolution.

version 3.1.4 and above are lacking a changelog, so its hard to say if there is a reason for this bug.