[Pkg-javascript-devel] Bug#995702: TypeError: Cannot read property 'prefix_exceptions' of undefined

[Dominik George]

>   - let autoprefixerData = { browsers: agents, prefixes: dataPrefixes }
>   + let autoprefixerData = { browsers: agents.agents, prefixes: dataPrefixes }

It's
https://github.com/browserslist/caniuse-lite/commit/fde289588b2ccb129ba3d1552134be2c78fee8b7

So, this happened with a recent update of node-autoprefixer, because
the new autoprefixer relies on the new API of caniuse-lite.

caniuse-lite should, and will at some point, be updated in Debian as
well. However, this will break node-browserslist, because that relies
on the old API. Oh the joy!

Proposal:

 1. Add a patch to node-autoprefixer to use the old API
 2. Add a version constraint to the node-caniuse-lite dependency in
    node-autoprefixer (<< 1.0.30001226~)
 3. Report a bug against node-caniuse-lite to update to the current
    upstream version, with a gentle hint on what will break if updated
 4. Once updated, drop the patch, and remove the version constraint

@ JavaScript team, shall I proceed with that?

-nik
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