yarn clean deletes relevant files

[reflog]

Node 6.5, Linux, Yarn 0.16
Repo to reproduce: https://github.com/reflog/yarn_problem_2

did:

yarn init
yarn add typescript tslint

ran 'tslint' - all is well

ran

yarn clean
tslint

it fails with:

module.js:457
    throw err;
    ^

Error: Cannot find module './test/parse'
    at Function.Module._resolveFilename (module.js:455:15)
    at Function.Module._load (module.js:403:25)
    at Module.require (module.js:483:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/home/reflog/Rafael/yarn_problem_2/node_modules/tslint/lib/test.js:10:13)
    at Module._compile (module.js:556:32)
    at Object.Module._extensions..js (module.js:565:10)
    at Module.load (module.js:473:32)
    at tryModuleLoad (module.js:432:12)
    at Function.Module._load (module.js:424:3)

[marzepani]

You can add exclude rules to .yarnclean.
Example Gist

In this case !tslint/src/test/parse.ts might do the trick. (untested)

[sebmck]

You can do what @marzepani suggests. yarn clean is working correctly here since it's common for module authors to accidently publish packages with the original test folder and that file is hitting that rule.

[develar]

@kittens But probably only root folder test should be cleaned, not subfolders (src/test). And especially not sub of src folder.

[renzska]

I just hit the same issue. tslint requires the /tslint/lib/test/ folder to run correctly. Anything under src or lib that has test in it should not be removed. In this case, it breaks tslint.

[arichiardi]

I have run across this one as well, I can confirm that the entry in the .yarnclean works around the problem. After yarn clean tslint keeps working.