tsconfig.json

{
  "compilerOptions": {
    "paths": { "*": ["types/*"] },
    "module": "ESNext",
    "lib": ["es2018", "dom"],
    "target": "ES2018",
    "noImplicitAny": true,
    "moduleResolution": "node",
    "noImplicitUseStrict": true,
    "types": ["reflect-metadata", "jest", "node"],
    "forceConsistentCasingInFileNames": true,
    "pretty": true,
    "baseUrl": ".",
    "rootDir": "./src",
    "declarationDir": "./types",
    "declaration": true,
    "strictNullChecks": true,
    "preserveConstEnums": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "noUnusedLocals": true,
    "skipLibCheck": true,
    "stripInternal": true,
    "sourceMap": true,
    "plugins": [{ "transform": "typescript-rtti/dist/transformer" }]
  },
  "exclude": [
    "./examples",
    "./types"
    // , "**/*.spec.ts", "./src/specs" // for some reason these cause the build to fail
  ],
  "ts-node": {
    "compiler": "ttypescript"
  }
}