berry: [Bug] Go-to definition with ZipFS doesn't work in VSCode 1.48

• I’d be willing to implement a fix

  I’d have to be given a lot of direction though…

Describe the bug

When jumping to definitions in VSCode 1.48 with the Yarn SDKs and ZipFS extension installed, I get an error similar to this:

Unable to open ‘index.d.ts’: Unable to read file ‘/zip:/Users/me/src/project/.yarn/cache/@types-leaflet-npm-1.5.17-401fcefaf4-a596fb8672.zip/node_modules/@types/leaflet/index.d.ts’ (Error: Unable to resolve non-existing file ‘/zip:/Users/me/src/project/.yarn/cache/@types-leaflet-npm-1.5.17-401fcefaf4-a596fb8672.zip/node_modules/@types/leaflet/index.d.ts’).

The same action works in 1.47.

To Reproduce

I don’t know how to script this, so I made a repo with some instructions:

https://github.com/xandris/zipfs-bug

Environment if relevant (please complete the following information):

• OS: Mac OS 10.15.6
• Node: 14.8.0
• Yarn: 2.1.1

Additional context

VSCode 1.48 appears to generate a path that starts with /zip:, bit if you cause a failure in 1.47, the paths it prints out start with zip:. So maybe the leading slash is the immediate cause?

Right-clicking on a zip file and choosing “mount as directory” doesn’t appear to do anything in either 1.47 or 1.48, or at least I can’t find the effect.