Jest integration

[gcperrin]

Beginning an integration of a customer codebase with Jest for testing.

Email-templates (and really I believe the dependency fs-extra) is failing on import/require for some reason. Note that our use of the package for email/templating has been running in production just fine. It only fails within the test runner. At first I thought it might be a path issue with the templates but after further digging it is actually failing on import/require.

Snippet of the error below for consideration

Thanks,
G

@pmpbar

[niftylettuce]

I believe I've solved this for you in the latest version v4.0.3 of email-templates! (hopefully 🤞 )

Seems to be possibly related to jestjs/jest#6399 isaacs/node-graceful-fs#102, and jestjs/jest#5239.

I just dropped the usage of fs-extra (which used graceful-fs and that seemed to have several issues with it) so perhaps try the latest version of email-templates, v4.0.3+ via yarn add email-templates@latest. Please confirm this is the correct version installed by opening node_modules/email-templates/package.json afterwards and seeing that version property value is 4.0.3.

Let me know once you've installed latest version and have tried again - does the issue still persist? Did you solve it some other way? If so, can you please update our README here with any tips/instructions for jest configuration?

I also sent you guys an email just now in case you don't get GH notifications.

Thanks many @pmpbar @gcperrin 👏 👍

[taybart]

Thanks Lechuga! Keep up the good work!

[niftylettuce]

Thanks @taybartski - I just set up a Patreon and PayPal so I can keep this momentum going! ❤️ ❤️ ❤️

[niftylettuce]

this is related to #318 - there is one more dep that requires fs-extra, fixing now