tsconfig.app.json

{
  "compilerOptions": {
    // "composite": true,
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
    "target": "ES2020",
    "useDefineForClassFields": true,
    "lib": ["ES6", "ES2020", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "skipLibCheck": true,
    "baseUrl": "src",

    /* Bundler mode */
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "moduleDetection": "force",
    "noEmit": true,
    "jsx": "react-jsx",
    "allowSyntheticDefaultImports": true,

    /* Linting */
    "strictNullChecks": true,                    /* Enable strict null checks. */
    "strictFunctionTypes": true,                 /* Enable strict checking of function types. */
    "strictBindCallApply": true,                 /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
    "strictPropertyInitialization": true,        /* Enable strict checking of property initialization in classes. */
    "noImplicitThis": true,                      /* Raise error on 'this' expressions with an implied 'any' type. */
    "alwaysStrict": true,                        /* Parse in strict mode and emit "use strict" for each source file. */
  
    /* Additional Checks */
    "noUnusedLocals": true,                      /* Report errors on unused locals. */
    "noUnusedParameters": true,                  /* Report errors on unused parameters. */
    "noImplicitReturns": true,                   /* Report error when not all code paths in function return a value. */
    "noFallthroughCasesInSwitch": true,          /* Report errors for fallthrough cases in switch statement. */
    "noUncheckedIndexedAccess": true,            /* Include 'undefined' in index signature results */
    "noImplicitOverride": true,                  /* Ensure overriding members in derived classes are marked with an 'override' modifier. */
    "noPropertyAccessFromIndexSignature": true,  /* Require undeclared properties from index signatures to use element accesses. */  
  },
  "include": ["src"]
}