$.rails undefined with jquery 3.4.0

[phoet]

our automated @depfu yarn updates had some errors in our system-tests.

with jquery 3.4.0 there are some problems with jquery-ujs and other libraries such as bootstrap-datepicker.

i'm not completely sure what is happening there. just leaving this here in case anyone else finds related issues.

[phoet]

it looks like this is because of yarnpkg/yarn#4125

it looks like it got fixed here, but i assume no new version has been released to NPM?

[phoet]

@theflow 👀 i guess that there will be many issues that like that with your js builds

[phoet]

@rafaelfranca could you take a look and verify that this will need a new npm release? thx!

[phoet]

@lucasmazza do you know who can be asked about releasing a new npm version of this?

[phoet]

😿

[lucasmazza]

☝️ ping @rafaelfranca

[klaustopher]

@phoet hitting the same issue, have you found any workarounds?

[phoet]

@klaustopher editing the yarn.lock by hand...

[klaustopher]

Hmm, ok .. I'd like to run the jquery update but if this is not possible, then we might need to always stay on 3.3.x ☹️

[phoet]

It is possible, just yarn thinks it should use different versions for your dependencies. If you update and them merge both dependencies in your yarn.lock everything works fine.