tsconfig.json

{
  "compilerOptions": {
    "module": "esnext", /* specifies module code generation */
    "moduleResolution": "node", /* resolves modules using Node engine */
    "target": "es5",

    "allowJs": true, /* allows javaScript files to be compiled */
    "allowSyntheticDefaultImports": true, /* allows default imports from modules with no default export */
    "allowUnreachableCode": false,
    "declaration": true, /* generate corresponding .d.ts file */
    "esModuleInterop": true, /* disables namespace imports (import * as fs from "fs") and enables CJS/AMD/UMD style imports (import fs from "fs") */
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": true,
    "isolatedModules": true, /* unconditionally emits imports for unresolved files */
    "jsx": "react-jsx", /* Support JSX in .tsx files (This one comes in handy sometimes) */
    "noEmit": true, /* Not to compile code, only performs type checking */
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true, /* reports errors on unused locals (suggested for clean code writing) */
    "noUnusedParameters": true, /* report errors on unused parameters (again, suggested for clean code writing) */
    "pretty": true,
    "removeComments": true,
    "resolveJsonModule": true, /* includes modules imported with .json extension */
    "skipLibCheck": true, /* skip type checking of all declaration files */
    "sourceMap": true, /* generates corrresponding .map file */
    "strict": true, /* enables all strict type checking options */

    "baseUrl": "./src",
    "paths": {
      "@types": ["types"],
    },
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "types": [
      "node",
      "@types/jest",
      "@types/node",
      "@types/react",
      "@types/react-dom"
    ]
  },
  "include": [
    "**/*.ts",
    "**/*.tsx"
  ],
  "exclude": [
    "node_modules",
    "build"
  ]
}