tsconfig.json

{
  "compilerOptions": {
    "target": "ES2020",
    "moduleResolution": "Node",
    "declaration": true,
    "esModuleInterop": true,
    "resolveJsonModule": true,
    
    "strict": true,
    "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
    "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
    "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
    "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
    "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */
    "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
    "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */
    "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */
    "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */
    // "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */
    "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */
    "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */
    
    "rootDir": "src"
  },
  "include": ["src", "package.json"],
  "exclude": ["node_modules", "dist", "tests"] // Added "dist" to avoid recompiling the output
}