tsconfig.dev.json

{
  "compilerOptions": {
    "allowJs": true,
    "checkJs": false,
    "module": "commonjs",
    "esModuleInterop": true, // Because of JSONPath
    "strict": true,
    "outDir": "dev",
    "removeComments": false,
    "target": "es2015",
    "sourceMap": true,
    "typeRoots": ["node_modules/@types", "types"]
  },
  "include": ["scripts/**/*"]
}