tsconfig.json

{
  "compilerOptions": {
    /* Language and Environment */
    "target": "es2017",                                     /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "lib": [
      "ES2015"
    ],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */

    /* Modules */
    "module": "commonjs",                                /* Specify what module code is generated. */
    "moduleResolution": "node",                       /* Specify how TypeScript looks up a file from a given module specifier. */
    "resolveJsonModule": true,                        /* Enable importing .json files */

    /* JavaScript Support */

    /* Emit */
    "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
    "outDir": "dist",                                   /* Specify an output folder for all emitted files. */

    /* Interop Constraints */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */

    /* Type Checking */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "noUnusedLocals": false,                           /* Enable error reporting when a local variables aren't read. */
    "noUnusedParameters": false,                       /* Raise an error when a function parameter isn't read */

    /* Completeness */
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  }
}