Error when nodegit is referenced from several places

[stukalin]

If nodegit is referenced in more than 1 test file (even not directly) then Jest throws random errors related to promisify-node like:
TypeError: Cannot convert undefined or null to object at processExports (node_modules/promisify-node/index.js:44:16) at Object.<anonymous> (index.js:1:106) at Object.<anonymous> (__tests__/index.test.js:1:100)
Steps could be following:

1. install jest and nodegit; create a module which requires nodegit and 2 tests which require the module
2. run jest

I've created a repo illustrating that.
https://github.com/stukalin/jest-nodegit-issue
Simply run yarn install && yarn test. Note, that sometimes tests pass, but simply repeat 2-3 times.

With --no-cache it works

My conf:
OS: Ubuntu 16.04
Jest: v20.0.1
nodegit: latest (0.18.3)
yarn: 0.23.4
npm: 3.10.10
node: v6.10.2

[thymikee]

Looks like we hit similar problem as here: #2029

[thymikee]

Closing due to: #3552

[github-actions]

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