error3/dev.tsconfig.json

Error3 is proper JS error implementation. It supports error codes, message formatting (e.g. i18n) and nested errors.

{
  "compilerOptions": {
      "target": "es6",
      "module": "commonjs",
      "sourceMap": true,
      "outDir": "./build/cjs",
      "experimentalDecorators": false,
      "lib": [
          "es2017"
      ]
  },
  "include": [
      "src/**/*", "test/**/*"
  ]
}