sp-dev-fx-webparts/samples/react-rxjs-event-emitter/config/config.json

{
  "$schema": "https://developer.microsoft.com/json-schemas/spfx-build/config.2.0.schema.json",
  "version": "2.0",
  "bundles": {
    "rxjseventemitter": {
      "components": [
        {
          "entrypoint": "./lib/libraries/rxJsEventEmitter/RxJsEventEmitter.js",
          "manifest": "./src/libraries/rxJsEventEmitter/RxJsEventEmitter.manifest.json"
        }
      ]
    },
    "broadcaster": {
      "components": [
        {
          "entrypoint": "./lib/webparts/broadcaster/BroadcasterWebPart.js",
          "manifest": "./src/webparts/broadcaster/BroadcasterWebPart.manifest.json"
        }
      ]
    },
    "receiver": {
      "components": [
        {
          "entrypoint": "./lib/webparts/receiver/ReceiverWebPart.js",
          "manifest": "./src/webparts/receiver/ReceiverWebPart.manifest.json"
        }
      ]
    }
  },
  "externals": {},
  "localizedResources": {
    "broadcasterStrings": "lib/webparts/broadcaster/loc/{locale}.js",
    "receiverStrings": "lib/webparts/receiver/loc/{locale}.js"
  }
}