Cannot ready property 'endsWidth' of undefined

[zslabs]

Do you want to request a feature or report a bug?
bug

What is the current behavior?
Running yarn on repo shows:

error TypeError: Cannot read property 'endsWith' of undefined
    at removeSuffix (/Users/zach/.yarn/lib/util/misc.js:42:14)
    at Function.parseRefs (/Users/zach/.yarn/lib/util/git.js:447:55)
    at /Users/zach/.yarn/lib/util/git.js:376:24
    at next (native)
    at step (/Users/zach/.yarn/node_modules/babel-runtime/helpers/asyncToGenerator.js:17:30)
    at /Users/zach/.yarn/node_modules/babel-runtime/helpers/asyncToGenerator.js:28:20

If the current behavior is a bug, please provide the steps to reproduce.

Run yarn to install deps.

What is the expected behavior?

Completed install

Please mention your node.js, yarn and operating system version.

Node v6.5.0
Yarn 0.15.1
Yosemite 10.11.6

[hzoo]

Looks like it's from

yarn/src/util/git.js

Line 350 in 5545d11

name = removeSuffix(name, '^{}');

    for (const line of refLines) {
      // line example: 64b2c0cee9e829f73c5ad32b8cc8cb6f3bec65bb refs/tags/v4.2.2
      const [sha, id] = line.split(/\s+/g);
      let [,, name] = id.split('/');

      // TODO: find out why this is necessary. idk it makes it work...
      name = removeSuffix(name, '^{}'); // name is undefined

[ijlind]

I got the same error today on a repo that has a private git repo as a dependency. Installs smoothly on other repos.

The private git dependency is defined along these lines in my package.json -file:

"dependencies": {
  "private_dependency_name": "git+ssh://git.private.org/home/git/private_dependency_name.git#v1.0.0"
},

Another private repo I have has an otherwise identical package.json contents and there yarn works a treat.

Edit. In addition, plain npm install works just fine with the problematic repo.

[lolmaus]

Yep, also ran into this issue on a project depending on a private GitHub repo.

[chicoxyzzy]

See #971

[samccone]

Dup #573