showConfig CLI option no longer shows all the compilation options

[yohny]

🔎 Search Terms

showconfig

🕗 Version & Regression Information

• This changed between versions 5.9.3 and 6.0.3

⏯ Playground Link

No response

💻 Code

The --showConfig option used to show all the compilerOptions, inluding the ones not explicitly specified in tsconfig so one could see also the applied default values (that is the purpose of the command - to see the final config, even according to docs).

After update to 6.0.3 many options are no longer present. The same tsconfig (below) was used to generate --showConfig output.

TSConfig file:

{
  "compilerOptions": {
    "module": "nodenext",
    "outDir": "dist",
    "rootDir": ".",
    "sourceMap": true,
    "strict": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "types": ["node", "jest"]
  }
}

🙁 Actual behavior

The --showConfig output for TS 5.9.3:

{
  "compilerOptions": {
    "module": "nodenext",
    "outDir": "./dist",
    "rootDir": "./",
    "sourceMap": true,
    "strict": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "types": ["node", "jest"],
    "target": "esnext",
    "moduleResolution": "nodenext",
    "moduleDetection": "force",
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "resolvePackageJsonExports": true,
    "resolvePackageJsonImports": true,
    "resolveJsonModule": true,
    "useDefineForClassFields": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictPropertyInitialization": true,
    "strictBuiltinIteratorReturn": true,
    "alwaysStrict": true,
    "useUnknownInCatchVariables": true
  },
  "files": [
    // no change
  ],
  "exclude": [
    // no change
  ]
}

The --showConfig output for TS 6.0.3:

{
  "compilerOptions": {
    "module": "nodenext",
    "outDir": "./dist",
    "rootDir": "./",
    "sourceMap": true,
    "strict": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "types": ["node", "jest"],
    "moduleResolution": "nodenext",
    "moduleDetection": "force"
  },
  "files": [
    // no change
  ],
  "exclude": [
    // no change
  ]
}

🙂 Expected behavior

All the remaining compilerOptions should be present in the --showConfig output.

Additional information about the issue

No response