Plugin 1 specified in "base" provided an invalid property of "_parallelBabel"

[kellyselden]

Occurring in 1.0.

Error: Plugin 1 specified in "base" provided an invalid property of "_parallelBabel"
    at Plugin.init

Seen here:

kellyselden/package-hint-historic-resolver#435
https://travis-ci.org/kellyselden/package-hint-historic-resolver/jobs/259946508#L2824

ember-fastboot/ember-cli-fastboot#463
https://ci.appveyor.com/project/embercli/ember-cli-fastboot/build/197/job/rsjru7fvih38l8qb#L187

[rwjblue]

@mikrostew - Can you take a look?

[mikrostew]

Looks like #91 fixes the main error here.

But I am still seeing this warning twice when running the tests for kellyselden/package-hint-historic-resolver:

broccoli-babel-transpiler is opting out of caching due to a plugin that does not provide a caching strategy: `() => __dirname`.

I think ember-cli-babel needs to use broccoli-babel-transpiler 6.1.2, which fixes this issue as well.

[mikrostew]

The caching error is fixed by #93.

@kellyselden - I reran the tests for package-hint-historic-resolver and that is working for me locally. I had to bump ember-cli-babel to "^6.7.1" for ember-cli-fastboot and that is working for me now as well. Does this fix the issue?

[kellyselden]

This is still happening in v1.0.1.

https://travis-ci.org/kellyselden/package-hint-historic-resolver/jobs/261442779#L2804

[mikrostew]

Ah I was reproducing this the wrong way - running npm run test was working for me, but on travis this is running code coverage, like COVERAGE=true npm run test:base, which fails.

These changes are not playing nicely with ember-cli-code-coverage. This is designed to work in the build pipeline, where the plugins are run through broccoli-babel-transpiler which converts any of this parallel stuff into the form that babel expects. But ember-cli-code-coverage is using babel outside of this, and seeing the plugin objects before they are converted.

[kellyselden]

Ok it appears this is now just an issue with how it works with ember-cli-code-coverage.

@mikrostew So you know which project has to change to work, this or them? If them, I can close this and open an issue over there.

[rwjblue]

We need to update ember-cli-code-coverage so that it doesn't have its own babel transpilation step.

[kellyselden]

Cross linked ember-cli-code-coverage/ember-cli-code-coverage#133