How to use the @shd101wyy/mume.MarkdownEngine function in @shd101wyy/mume

async function main() {
  await mume.init();

  const engine = new mume.MarkdownEngine({
    filePath: "./docs/fullbook.md",
    config: {
      previewTheme: "github-light.css",
      // revealjsTheme: "white.css"
      codeBlockTheme: "default.css",
      breakOnSingleNewLine: false,
      printBackground: true,
      enableScriptExecution: true, // <= for running code chunks
    },
  });

  // html export
  // await engine.htmlExport({ offline: false, runAllCodeChunks: true });
  // console.log("Should be done.");

  // chrome (puppeteer) export

public initMarkdownEngine(sourceUri: Uri): MarkdownEngine {
    let engine = this.getEngine(sourceUri);
    if (!engine) {
      engine = new MarkdownEngine({
        filePath: this.getFilePath(sourceUri),
        projectDirectoryPath: this.getProjectDirectoryPath(
          sourceUri,
          vscode.workspace.workspaceFolders,
        ),
        config: this.config,
      });
      this.engineMaps[sourceUri.fsPath] = engine;
      this.jsAndCssFilesMaps[sourceUri.fsPath] = [];
    }
    return engine;
  }