tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "incremental": true                       /* 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": [
      "es2015",
      "es2017"
    ]                                         /* Specify library files to be included in the compilation. */,
    "allowJs": true                           /* Allow javascript files to be compiled. */,
    "checkJs": false                          /* Report errors in .js files. */,
    "declaration": true                       /* Generates corresponding '.d.ts' file. */,
    "declarationMap": false,                  /* Generates a sourcemap for each corresponding '.d.ts' file. */
    "sourceMap": true                         /* Generates corresponding '.map' file. */,
    "outDir": "dist"                          /* Redirect output structure to the directory. */,
    "rootDir": ".",                           /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
    /* 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. */,
    "noImplicitReturns": true                 /* Report error when not all code paths in function return a value. */,
    "noFallthroughCasesInSwitch": true        /* Report errors for fallthrough cases in switch statement. */,
    /* Module Resolution Options */
    "moduleResolution": "node"                /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
    "esModuleInterop": false                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    /* Advanced Options */
    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */,
    "resolveJsonModule": true,
    "pretty": false,
    "skipLibCheck": true
  },
  "include": ["src/"],
  "compileOnSave": false
}