base.json

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "display": "Base",

  "compilerOptions": {
    "module": "node16",
    "moduleResolution": "node16",

    "strict": true,

    "esModuleInterop": true, // Will be true anyhow because module is node16
    "allowSyntheticDefaultImports": true, // Will be true anyhow because esModuleInterop is true
    "skipLibCheck": false, // See https://github.com/voxpelli/tsconfig/issues/1
    "types": ["node"], // Don't implicitly pull in declarations from `@types` packages

    /* Clean up generated declarations */
    "removeComments": true,
    "stripInternal": true,

    /* Make it a JS-targeted config */
    "allowJs": true,
    "checkJs": true,
    "noEmit": true,
    "resolveJsonModule": true,

    /* New checks being tried out */
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUncheckedSideEffectImports": true,

    /* Additional checks */
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": false, // Deactivated as I believe implicit "return undefined" at end of function is okay + explicit clashes with ESLint "no-useless-return"
    "noUnusedLocals": true,
    "noUnusedParameters": true

    /* To make strict checking somewhat less strict during a transition stage, add one or more of: */
    /*
    "noImplicitThis": false,
    "noImplicitAny": false,
    "strictNullChecks": false,
    */
  }
}