tsconfig.json

{
  "include": [ "packages/**/*" ],
  "exclude": [ "node_modules" ],
  "compilerOptions": {
    // Compilation Configuration
    "lib": ["es2018"],
    "target": "es2018",
    "inlineSources": true,
    "inlineSourceMap": true,
    "declaration": true,
    "allowSyntheticDefaultImports": true,

    // Environment Configuration
    "experimentalDecorators": true,
    "moduleResolution": "node",
    "skipLibCheck": true,

    // Enhance Strictness
    "noImplicitAny": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedParameters": true,
    "allowUnreachableCode": false,
    "strictNullChecks": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "forceConsistentCasingInFileNames": true,
    "noUnusedLocals": true,
    "strictFunctionTypes": true,
    "alwaysStrict": true,
    "strictPropertyInitialization": true,
    "strict": true,

    // output options
    "preserveConstEnums": false,
    "declarationMap": true,
    "newLine": "LF",
    "traceResolution": false,
    "module": "commonjs",
    "jsx": "preserve",

    "baseUrl": ".",
    "paths": {
      "perfectionist": [
        "types-local/perfectionist"
      ],
      "regexpu-core": [
        "types-local/regexpu-core"
      ],
      "inline-source-map-comment": [
        "types-local/inline-source-map-comment"
      ],
      "loader-utils": [
        "types-local/loader-utils"
      ]
    }
  }
}