tsconfig.json

{
  "compilerOptions": {
    /* Language and Environment */
    "target": "es2015",

    /* Modules */
    "module": "commonjs" /* Specify what module code is generated. */,
    "rootDir": "./src",

    /* Emit */
    "outDir": "./dist" /* Specify an output folder for all emitted files. */,
    "removeComments": false /* Disable emitting comments. */,

    /* Interop Constraints */
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,

    /* Type Checking */
    "strict": true /* Enable all strict type-checking options. */,
    "noImplicitAny": true /* Enable error reporting for expressions and declarations with an implied */,
    "declaration": true,

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