tsconfig.json

{
  "compilerOptions": {
    "target": "es2018",                         /* 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": ["es2018"],                          /* Specify library files to be included in the compilation. */
    "strict": true,                             /* Enable all strict type-checking options. */
    "outDir": "./build",                         /* Redirect output structure to the directory. */
    "baseUrl": ".",                             /* Base directory to resolve non-absolute module names. */
    "moduleResolution": "node",                 /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
    "removeComments": true,                     /* Do not emit comments to output. */
    "forceConsistentCasingInFileNames": true,   /* Disallow inconsistently-cased references to the same file. */
    "paths": {                                  /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
      "*": ["src/*"]
    },
    "importHelpers": true,                      /* Import emit helpers from 'tslib'. */
    "allowJs": true,                            /* Allow javascript files to be compiled. */
    "sourceMap": true,                          /* Generates corresponding '.map' file. */
    "esModuleInterop": true,                    /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
  },
  "include": ["./src/**/*.ts"],
}