tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs", 
    "outDir": "lib",
    "declarationDir": "./lib/types",
    "declaration": true,                            /* Generates corresponding '.d.ts' file. */
    "removeComments": true,                         /* Do not emit comments to output. */
    "strict": true,                                 /* Enable all strict type-checking options. */
    "strictPropertyInitialization": false,          /* Enable strict checking of property initialization in classes. */
    "alwaysStrict": true,                        /* Parse in strict mode and emit "use strict" for each source file. */
    "noUnusedLocals": true,                         /* Report errors on unused locals. */
    "moduleResolution": "node",                  /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
    "baseUrl": "./src",                             /* Base directory to resolve non-absolute module names. */
    "paths": {
    },                                              /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
    "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. */
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
  },
  "lib": ["es2018", "dom"],
  "ts-node": {
    "require": ["tsconfig-paths/register"],
    "skipIgnore": true
  },
}