tsconfig.json

{
  "compilerOptions": {
      "composite": true,
      /* Basic Options */
      "target": "ESNext", //                    /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
      "module": "NodeNext", //                  /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
      "lib": [ //                               /* Specify library files to be included in the compilation. */
          "ESNext"
      ],
      "rootDir": "./src",
      "outDir": "./esm",
      "sourceMap": true,
      "declaration": true,
      "declarationDir": "./esm",
      "declarationMap": true,
      "stripInternal": true,
      // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
      // "noEmit": true,                        /* Do not emit outputs. */
      // "importHelpers": true, //                 /* Import emit helpers from 'tslib'. */
      "skipLibCheck": true, //                  /* Skip type checking of all declaration files (*.d.ts). */
      /* Strict Type-Checking Options */
      "strict": true, //                        /* Enable all strict type-checking options. */
      /* Additional Checks */
      "noUnusedLocals": true, //                /* Report errors on unused locals. */
      // "noUnusedParameters": true,            /* Report errors on unused parameters. */
      "noImplicitOverride": true,
      "noImplicitReturns": true, //             /* Report error when not all code paths in function return a value. */
      "noFallthroughCasesInSwitch": true, //    /* Report errors for fallthrough cases in switch statement. */
      "forceConsistentCasingInFileNames": true, /* Disallow inconsistently-cased references to the same file. */
      "exactOptionalPropertyTypes": true,
      "noImplicitAny": true,
      "noImplicitThis": true,
      "noUncheckedIndexedAccess": true,
      "resolveJsonModule": true,
      /* Module Resolution Options */
      "moduleResolution": "NodeNext", //        /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
      // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
      // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
      // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
      // "typeRoots": [],                       /* List of folders to include type definitions from. */
      "types": [], //                           /* Type declaration files to be included in compilation. */
      "esModuleInterop": true, //               /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
      // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
      // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
      "verbatimModuleSyntax": true
  },
  "include": [
      "./src"
  ],
  "exclude": [
      "./src/**/*.spec.ts",
  ]
}