tsconfig.json

{
  "compilerOptions": {
    "incremental": false,                     /* Enable incremental compilation */
    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "lib": [],                                /* Specify library files to be included in the compilation. */
    "rootDir": "./src/",
    "outDir": "./build/",
    "allowJs": false,                         /* Allow javascript files to be compiled. */
    "checkJs": false,                         /* Report errors in .js files. */
    "declaration": false,                     /* Generates corresponding '.d.ts' file. */
    "sourceMap": false,                       /* Generates corresponding '.map' file. */
    "removeComments": true,                   /* Do not emit comments to output. */
    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */
  }
}