@shencom/wechat-opencv/dist/index.js

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let cvInstance = null;
let isInitializing = false;
let initPromise = null;
async function opencvInit() {
  if (cvInstance) {
    return cvInstance;
  }
  if (isInitializing) {
    return initPromise;
  }
  isInitializing = true;
  initPromise = new Promise((resolve, reject) => {
    const __Module__ = {
      preRun: [],
      postRun: [],
      print: console.log,
      printErr: console.error,
      setStatus: console.log,
      onRuntimeInitialized: async () => {
        try {
          if (window.__cv__ instanceof Promise) {
            cvInstance = await window.__cv__;
          } else {
            cvInstance = window.__cv__;
          }
          resolve(cvInstance);
        } catch (error) {
          reject(error);
        }
      },
      totalDependencies: 0
    };
    window.__Module__ = __Module__;
    window.onerror = () => {
      __Module__.setStatus(`Exception thrown, see JavaScript console`);
      __Module__.setStatus = (text) => {
        if (text)
          __Module__.printErr(`[post-exception status] ${text}`);
      };
    };
    const script1 = document.createElement("script");
    script1.src = "https://scplugins.oss-cn-shenzhen.aliyuncs.com/plugins/scloud/assets/qrcode/wechat_qrcode_files.js";
    script1.setAttribute("crossorigin", "anonymous");
    script1.onerror = () => {
      reject(new Error("Failed to load wechat_qrcode_files.js"));
    };
    document.body.appendChild(script1);
    const script2 = document.createElement("script");
    script2.src = "https://scplugins.oss-cn-shenzhen.aliyuncs.com/plugins/scloud/assets/qrcode/opencv.js";
    script2.async = true;
    script2.setAttribute("crossorigin", "anonymous");
    script2.type = "application/javascript";
    script2.onerror = () => {
      reject(new Error("Failed to load OpenCV.js"));
    };
    document.body.appendChild(script2);
  });
  return initPromise;
}

export { opencvInit };
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