Function patchSlotInsertAdjacentHTML

src/runtime/dom-extras.ts:209–231

(HostElementPrototype: HTMLElement)

 * @param HostElementPrototype the `Element` to be patched
 */
export const patchSlotInsertAdjacentHTML = (HostElementPrototype: HTMLElement) => {
  if ((HostElementPrototype as any).__insertAdjacentHTML) return;
  const originalInsertAdjacentHtml = HostElementPrototype.insertAdjacentHTML;

  HostElementPrototype.insertAdjacentHTML = function (this: d.HostElement, position: InsertPosition, text: string) {
    if (position !== 'afterbegin' && position !== 'beforeend') {
      return originalInsertAdjacentHtml.call(this, position, text);
    }
    const container = this.ownerDocument.createElement('_');
    let node: d.RenderNode;
    container.innerHTML = text;

    if (position === 'afterbegin') {
      while ((node = container.firstChild as d.RenderNode)) {
        this.prepend(node);
      }
    } else if (position === 'beforeend') {
      while ((node = container.firstChild as d.RenderNode)) {
        this.append(node);
      }
    }
  };
};

/**
 * Patches the `insertAdjacentText` method for a slotted node inside a scoped component. Specifically,