🐛 Bug: Writing Multi stage config results having null in include files array

[rubiesonthesky]

Bug Report Checklist

• I have tried restarting my IDE and the issue persists.
• I have pulled the latest main branch of the repository.
• I have searched for related issues and found none that matched my issue.

Expected

Include array should not contain null value

 "include": [
            "test/**/*.{ts,tsx}"
        ]

Actual

 "include": [
            "test/**/*.{ts,tsx}",
            null
        ]

Additional Info

I generated typestat.json for this repo by selecting all possible options in improvements section: Which improvements would you like to make?

The bug is in writeSingleTypeScriptConfig function where sourceFiles is not being checked for being present before adding it to array.

It would help to catch bugs if those configs would be type checked. By trying to type check them, I found another possible bug: printImprovements adds inferableTypes: true, when it should probably be noInferableTypes.

My answers

✔ What are you trying to accomplish? · Improve typings in my TypeScript files
✔ Where is your tsconfig.json? · ./tsconfig.json
✔ Which improvements would you like to make? · Add missing property declarations to classes, Enable the --noImplicitAny compiler flag, Enable the --noImplicitThis compiler flag, Remove type annotations that don't change the meaning of code, Enable the --strictNullChecks compiler flag

✔ Which glob matches files you'd like to convert? · everything
✔ Which glob matches your test files? · test/**/*.{ts,tsx}

Full typestat.json

[
    {
        "fixes": {
            "incompleteTypes": true,
            "noImplicitAny": true,
            "noInferableTypes": true,
            "noImplicitThis": true,
            "strictNonNullAssertions": true
        },
        "projectPath": "./tsconfig.json",
        "types": {
            "strictNullChecks": true
        },
        "include": [
            "test/**/*.{ts,tsx}"
        ]
    },
    {
        "fixes": {
            "incompleteTypes": true,
            "noImplicitAny": true,
            "noInferableTypes": true,
            "noImplicitThis": true
        },
        "projectPath": "./tsconfig.json",
        "exclude": [
            "test/**/*.{ts,tsx}"
        ]
    },
    {
        "fixes": {
            "incompleteTypes": true,
            "noImplicitAny": true,
            "noInferableTypes": true,
            "noImplicitThis": true
        },
        "projectPath": "./tsconfig.json",
        "include": [
            "test/**/*.{ts,tsx}",
            null
        ]
    }
]

[github-actions]

🎉 This is included in version v0.8.10 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀