tsconfig.json

{
  "compilerOptions": {
    "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
    "tsBuildInfoFile": "./dist/.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */

    /* Language and Environment */
    "target": "es2015",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */

    /* Modules */
    "module": "commonjs",                                /* Specify what module code is generated. */
    "rootDir": "./src",                                  /* Specify the root folder within your source files. */                        /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */

    /* Emit */
    "outDir": "./dist",                                   /* Specify an output folder for all emitted files. */
    "removeComments": true,                           /* Disable emitting comments. */
    "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
    "newLine": "lf",                                /* Set the newline character for emitting files. */
    "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */

    "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. */
    "skipLibCheck": true,                               /* Skip library checks. */

    /* Type Checking */
    "strict": true                                /* Enable all strict type-checking options. */
  },
  "exclude": ["examples"]
}