oly-fs/tsconfig.json

{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es2015",
    "outDir": "lib",
    "sourceMap": true,
    "declaration": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  },
  "include": [
    "src/**/*.ts"
  ]
}