tsconfig.json

{
  "include": ["./src/**/*.ts"],
  "exclude": ["node_modules"],
  "compilerOptions": {
    /* Visit https://aka.ms/tsconfig to read more about this file */
    "outDir": "./build",
    "rootDir": "./src",
    
    /* Language and Environment */
    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    

    /* Modules */
    "module": "commonjs",                                /* Specify what module code is generated. */
    
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
    // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */

    /* Type Checking */
    "strict": true,                                      /* Enable all strict type-checking options. */
    
    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
  }
}