Method insertBefore

src/lib/web-worker/worker-node.ts:49–101

(newNode: WorkerNode, referenceNode: Node | null)

      set href(_: any) {}

      insertBefore(newNode: WorkerNode, referenceNode: Node | null) {
        // ensure the node being added to the window's document
        // is given the same winId as the window it's being added to
        const winId = (newNode[WinIdKey] = this[WinIdKey]);
        const instanceId = newNode[InstanceIdKey];
        const nodeName = newNode[InstanceDataKey];
        const isScript = nodeName === NodeName.Script;
        const isIFrame = nodeName === NodeName.IFrame;

        if (isScript) {
          const scriptContent = getInstanceStateValue<string>(newNode, StateProp.innerHTML);
          const scriptType = getInstanceStateValue<string>(newNode, StateProp.type);

          if (scriptContent) {
            if (isScriptJsType(scriptType)) {
              // @ts-ignore
              const scriptId = newNode.id;
              const loadOnMainThread =
                scriptId && testIfMustLoadScriptOnMainThread(config, scriptId);

              if (loadOnMainThread) {
                setter(newNode, ['type'], 'text/javascript');
              } else {
                const errorMsg = runScriptContent(env, instanceId, scriptContent, winId, '');
                const datasetType = errorMsg ? 'pterror' : 'ptid';
                const datasetValue = errorMsg || instanceId;
                setter(newNode, ['type'], SCRIPT_TYPE + SCRIPT_TYPE_EXEC);
                setter(newNode, ['dataset', datasetType], datasetValue);
              }
            }
            setter(newNode, ['innerHTML'], scriptContent);
          }
        }

        callMethod(this, ['insertBefore'], [newNode, referenceNode], CallType.NonBlocking);

        if (isIFrame) {
          // an iframe element's instanceId is also
          // the winId of its contentWindow
          const src = getInstanceStateValue<string>(newNode, StateProp.src);
          if (src && src.startsWith('javascript:')) {
            const scriptContent = src.split('javascript:')[1];
            runScriptContent(env, instanceId, scriptContent, winId, '');
          }
          insertIframe(instanceId, newNode);
        }
        if (isScript) {
          sendToMain(true);
          webWorkerCtx.$postMessage$([WorkerMessageType.InitializeNextScript, winId]);
        }

        return newNode;
      }

      get nodeName() {
        return this[InstanceDataKey] === '#s' ? '#document-fragment' : this[InstanceDataKey];