How to use the @shd101wyy/mume.init 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.");

public constructor(private context: vscode.ExtensionContext) {
    this.config = MarkdownPreviewEnhancedConfig.getCurrentConfig();

    mume
      .init() // init markdown-preview-enhanced
      .then(() => {
        mume.onDidChangeConfigFile(this.refreshAllPreviews.bind(this));
        MarkdownEngine.onModifySource(this.modifySource.bind(this));

        const extensionVersion = require(path.resolve(
          this.context.extensionPath,
          "./package.json",
        ))["version"];
        if (extensionVersion !== mume.configs.config["vscode_mpe_version"]) {
          mume.utility.updateExtensionConfig({
            vscode_mpe_version: extensionVersion,
          });
        }
      });
  }