Cannot consume ES module based cypress config when using Yarn 3

Current behavior

Does not work correctly with cypress.config.ts containing ES module syntax when using Yarn 3 (does not create node_modules). I get an error and cannot proceed.

Problem is we try to resolve your TS install from projectRoot but new versions of yarn install modules in some other place that isn’t in <project>/node_modules.

We DO detect your bundler and framework correctly when setting up CT, so the logic that we use there should also be used for resolving your TS version.

Desired behavior

It works as you’d expected

Test code to reproduce

https://github.com/lmiller1990/yarn-3-issue-ts

• clone
• make sure you get 3.x when you do yarn --version
• install
• open cypress CT

Cypress Version

10.3.0

Other

Created from https://github.com/cypress-io/cypress/issues/22071#issuecomment-1180554866

[lmiller1990]

I haven’t had a chance to look at this in more depth yet. I’m sorry. I don’t think I can look at this during Dec, but I would like to see this triaged and fixed in January. Let me try and bump this one up in priority.

[lmiller1990]

I think I was misleading slightly - the title should not be ES module based but TS based cypress config. I will update it.

Basically, yarn 3 + TS isn’t working? I think it’s because we try to load your local TS from node_modules, which is not a thing in Yarn 3… digging into the various module problems now (eg https://github.com/cypress-io/cypress/issues/22795) so hopefully can look into this, too.