sp-dev-fx-webparts/samples/react-search-refiners/config/serve.json

{
  "$schema": "https://dev.office.com/json-schemas/core-build/serve.schema.json",
  "port": 4321,
  "https": true,
  "initialPage": "https://localhost:5432/workbench",
  "api": {
    "port": 5432,
    "entryPath": "node_modules/@microsoft/sp-webpart-workbench/lib/api/"
  },
  "serveConfigurations": {
    "default": {
      "pageUrl": "https://localhost:5432/workbench"
    },
    "queryStringDataSource": {
      "pageUrl": "https://collaborationcorner.sharepoint.com/teams/PnPIntranet/SitePages/Search(1).aspx",
      "customActions": {
        "24cae67d-dec7-4eff-bb41-49451d5b5a11": {
          "location": "ClientSideExtension.ApplicationCustomizer",
          "properties": {
          }
        }
      }
    }
  }
}