tsconfig.json

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "compilerOptions": {
    "outDir": "dist",
    "rootDir": "./src",
    "strict": false,
    "alwaysStrict": true,
    "allowJs": true,
    "sourceMap": true,
    "esModuleInterop": true,
    "declaration": true,
    "declarationMap": true,
    "importHelpers": false,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "isolatedModules": true,
    "removeComments": false,
    "moduleResolution": "node",
    "stripInternal": true,
    // ask tsc not to mess up with for ... of
    "downlevelIteration": true,
    "module": "esnext",
    "target": "es5",
    "jsx": "preserve",
    "lib": [
      "es2015",
      "esnext",
      "dom",
      "webworker",
      "scripthost"
    ],
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": [
      "./src/**/*.ts",
      "./src/**/*.d.ts",
  ]
}