tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "jsx": "preserve",
    "lib": [
      "dom",
      "es2017"
    ],
    "module": "esnext",
    "moduleResolution": "node",
    "noEmit": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "preserveConstEnums": true,
    "removeComments": false,
    "skipLibCheck": true,
    "sourceMap": true,
    "strict": true,
    "target": "esnext",
    "forceConsistentCasingInFileNames": true,
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
      "noImplicitAny": false, // disable error when define variable of type array and try to access its element by string key '123'
    // "suppressImplicitAnyIndexErrors": true, //  a more verbose alternative for above flag
    // "strictNullChecks": false,
  },
  "exclude": [
    "node_modules"
  ],
  "include": [
    "next-env.d.ts",
    "**/*.ts",
    "**/*.tsx"
  ]
}