tsconfig.json

{
  "compilerOptions": {
    "target": "ES2018",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
    "module": "commonjs",                        /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
    "sourceMap": true,                           /* Generates corresponding '.map' file. */
    "outDir": "./build",                         /* Redirect output structure to the directory. */
    "resolveJsonModule": true,
    "strict": true,                              /* Enable all strict type-checking options. */
    "typeRoots": [                               /* List of folders to include type definitions from. */
      "custom-types/**/*",
      "node_modules/@types"
    ],
    "esModuleInterop": true,                     /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "skipLibCheck": true,                        /* Skip type checking of declaration files. */
    "forceConsistentCasingInFileNames": true,    /* Disallow inconsistently-cased references to the same file. */
  }
}