"Cannot read property '_autoprefixerDisabled' of undefined'"

[miketaylr]

I originally filed this over at webcompat/webcompat.com#394.

I used to have:

├─┬ grunt-cssnext@0.1.1
│ ├─┬ cssnext@0.2.3
│ │ ├─┬ autoprefixer-core@3.1.2

Deleting node_modules and reinstalling I now have:

├─┬ grunt-cssnext@0.1.1
│ ├─┬ cssnext@0.2.3
│ │ ├─┬ autoprefixer-core@3.2.0

And now grunt cssnext fails with "Cannot read property '_autoprefixerDisabled' of undefined'"

[miketaylr]

This solves my issue:

rm -rf node_modules/
npm install autoprefixer-core@3.1.2
npm install
grunt

Now the task succeeds.

[Macxim]

Same here with gulp-cssnext.
Complete error is here.

[MoOx]

Autoprefixer takes a risk by upgrading to postcss 3 as a minor release (3.1 ->3.2) (poke @ai). This kind of situation doesnt really respect semver :/
Anyway, I'll release tomorrow morning cssnext 0.5 and will bump all plugins at the same time.
I hope this will probably fix this issue.
Fixing autoprefixer version is the only workaround possible for now.=

[Macxim]

Thank you very much for your speedy reply!

[ai]

@MoOx yeap, I should released 4.0 :). But I understand it only after release :(.

[ai]

@MoOx I unpublish 3.2 and release semver correct 4.0 release. Sorry. https://github.com/postcss/autoprefixer/releases/tag/4.0.0

[MoOx]

Good. Thanks !
Anyway, cssnext 0.5 is out.
Updating plugins right now :)

[magsout]

👍 thanks @MoOx

[Macxim]

Efficiency at its best. 👌

[miketaylr]

Whoa, fixed while I was sleeping. :)~

[mymai91]

Good solution. Thanks