tsconfig.json

{
  "compilerOptions": {
    "target": "es6",                                     /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
    "module": "commonjs",                                /* Specify what module code is generated. */
    "moduleResolution": "node",                       /* Specify how TypeScript looks up a file from a given module specifier. */
    "baseUrl": ".",                                  /* Specify the base directory to resolve non-relative module names. */
    "paths": {
      "*": ["node_modules/*", "src/types/*"]
    },                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
    "resolveJsonModule": true,                        /* Enable importing .json files */
    "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the `checkJS` option to get errors from these files. */
    "sourceMap": false,                                /* Create source map files for emitted JavaScript files. */
    "outDir": "dist",                                   /* Specify an output folder for all emitted files. */
    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */
    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
    "strict": true,                                      /* Enable all strict type-checking options. */
    "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied `any` type.. */
    "strictNullChecks": true,                         /* When type checking, take into account `null` and `undefined`. */
    "skipLibCheck": true,                                 /* Skip type checking all .d.ts files. */
    "lib": [ "es6", "dom" ]
  },
  "include": ["src/**/*", "test/**/*"]
}