Different errors are reported for a file outside of the project directory

[dylan-chong]

Bug Report

• TSLint version: 5.20.0
• TypeScript version: 3.5.3
• Running TSLint via: (pick one) CLI

Different errors are reported for files that are outside of the project directory. This is a problem for https://github.com/dense-analysis/ale because it copies the contents of the current (unsaved) file to a temp file, and runs tslint on it. This results in different errors being reported in my editor that what is expected

Reproduction using TSLint Playground

Can't do it using the playground as it uses a file but

myProject/tslint.json:

// You can modify the configuration here with your own.
// Make sure that your json is valid, and if you run into
// other issues, try checking the console for errors.

{
    "extends": [
    "tslint:recommended",
    "tslint-config-standard",
    "tslint-react",
    "tslint-config-prettier"
     ],
    "rules": {
        "quotemark": [
            true,
            "single",
            "jsx-single"
        ]
    } // add additional rules and their configuration
}

myProject/example.ts

console.log('hello'); // no errors here

./node_modules/.bin/tslint --format json -c tslint.json example.ts
[]

~/Desktop/example.ts

console.log('hello'); // Incorrect error here saying should be double quotes

./node_modules/.bin/tslint --format json -c tslint.json example.ts
[{"endPosition":{"character":16,"line":0,"position":16},"failure":"Replace `'hi'` with `\"hi\"`","fix":{"innerStart":12,"innerLength":4,"innerText":"\"hi\""},"name":"../../../../../../Desktop/f.ts","ruleName":"prettier","ruleSeverity":"ERROR","startPosition":{"character":12,"line":0,"position":12}}]

[JoshuaKGoldberg]

Hi @dylan-chong! It's a little unusual that you'd be investigating a Vim plugin for TSLint at this stage of its deprecation: #4534. It's also interesting that the only failing rule is prettier. Maybe this is a case of the Prettier rule not reading your Prettier config file?

Marking as needing investigation, though my suspicion is that the actual issue is with https://github.com/prettier/tslint-config-prettier or another Prettier integration.

[dylan-chong]

Hi, thanks for pointing out the deprecation. We have recently moved to eslint and the problem seems to have gone away.

[JoshuaKGoldberg]

🤖 Beep boop! 👉 TSLint is deprecated 👈 and you should switch to typescript-eslint! 🤖

🔒 This issue is being locked to prevent further unnecessary discussions. Thank you! 👋