message: Create output directory, delete existing output.
diff: @@ -6,12 +6,16 @@ import { Logger } from "@bentley/bentleyjs-core";
  import { IModelHost } from "@bentley/imodeljs-backend";
  import { AnalysisImporter } from "./AnalysisImporter";
  import * as path from "path";
  +import * as fs from "fs";
  IModelHost.startup();
  Logger.initializeToConsole();
  const outputDir = path.join(__dirname, "output");
  const dbName = path.join(outputDir, "AnalysisExample.bim");
  +fs.mkdir(outputDir, ((_err) => { }));
  +fs.unlink(dbName, ((_err) => { }));
  +
  const importer = new AnalysisImporter(dbName);
  importer.import();
  