v2.13.0 breaks requiring of relative files by changing the PWD

[ljharb]

What version of ESLint are you using?
v2.13.0

What parser (default, Babel-ESLint, etc.) are you using?
default

Please show your full configuration:

{
  "extends": "./index.js",
  "rules": {
    "comma-dangle": 0
  }
}

What did you do? Please include the actual source code causing the issue.
eslint .

What did you expect to happen?
Linting.

What actually happened? Please include the actual, raw output from ESLint.
replaced the project root path (ie the current directory) with $PWD

Cannot read config file: $PWD/node_modules/index.js
Error: Cannot find module '$PWD/node_modules/index.js'
Referenced from: $PWD/.eslintrc
Error: Cannot read config file: $PWD/node_modules/index.js
Error: Cannot find module '$PWD/node_modules/index.js'
Referenced from: $PWD/.eslintrc
    at Function.Module._resolveFilename (module.js:440:15)
    at module.exports ($PWD/node_modules/resolve-from/index.js:14:16)
    at module.exports ($PWD/node_modules/require-uncached/index.js:11:17)
    at loadJSConfigFile ($PWD/node_modules/eslint/lib/config/config-file.js:161:16)
    at loadConfigFile ($PWD/node_modules/eslint/lib/config/config-file.js:200:22)

Note that this works fine after npm install eslint@2.12 but fails after npm install eslint@2.13

[ljharb]

The eslint config in question is https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb-base/.eslintrc, if that's helpful.

[ilyavolodin]

I think this is related to #6450

[ljharb]

Sounds like it's probably a duplicate of #6450 :-)

I'll leave this open just in case, but also feel free to close since the problem is already being tracked.

[mysticatea]

I think so, too.
I close this issue, then reopen if it's wrong.