press-plus/press-knot-agent-chat/loader.js

易用的跨端组件库

/**
 * 动态加载 ChatSDK 脚本
 * @param {string} src 脚本地址
 * @returns {Promise}
 */
export function loadChatSDK(src) {
  return new Promise((resolve, reject) => {
    // 检查是否已加载
    if (window.ChatSDK) {
      resolve(window.ChatSDK);
      return;
    }

    // 检查是否已有相同脚本正在加载
    const existingScript = document.querySelector(`script[src="${src}"]`);
    if (existingScript) {
      existingScript.addEventListener('load', () => {
        if (window.ChatSDK) {
          resolve(window.ChatSDK);
        } else {
          reject(new Error('ChatSDK 加载失败：未找到 ChatSDK 对象'));
        }
      });
      existingScript.addEventListener('error', () => reject(new Error('ChatSDK 脚本加载失败')));
      return;
    }

    // 创建并加载脚本
    const script = document.createElement('script');
    script.src = src;
    script.async = true;

    script.onload = () => {
      if (window.ChatSDK) {
        resolve(window.ChatSDK);
      } else {
        reject(new Error('ChatSDK 加载失败：未找到 ChatSDK 对象'));
      }
    };

    script.onerror = () => reject(new Error('ChatSDK 脚本加载失败'));

    document.head.appendChild(script);
  });
}