tsconfig.json

{
  "compilerOptions": {
    "target": "es2015",
    "sourceMap": true,                     /* Generates corresponding '.map' file. */
    "strict": true,                           /* Enable all strict type-checking options. */
    "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
    "strictNullChecks": true,              /* Enable strict null checks. */
    "strictFunctionTypes": true,           /* Enable strict checking of function types. */
    "noImplicitThis": false,                /* Raise error on 'this' expressions with an implied 'any' type. */
    /* 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. */
    /* Module Resolution Options */
    "moduleResolution": "Bundler",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    /* Advanced Options */
    "skipLibCheck": true,                     /* Skip type checking of declaration files. */
    "forceConsistentCasingInFileNames": true,  /* Disallow inconsistently-cased references to the same file. */
    "paths": {
      "react": [
        "./node_modules/@types/react"
      ]
    },
    "types": ["node", "jest"],
    "rootDir": "./"
  },
}