github.com/ngocphuongnb/tetua@v0.0.7-alpha/packages/editor/src/menu/items/strikethrough.ts

import { MenuItem } from "../menu-item";

export class MenuStrikethrough extends MenuItem {
  protected command = 'strike';
  protected label = 'Strikethrough';
  protected isActive = false;
  protected icon = `<svg style="top:-1px" fill="currentColor"><g fill-rule="evenodd"><path d="M15.6 8.5c-.5-.7-1-1.1-1.3-1.3-.6-.4-1.3-.6-2-.6-2.7 0-2.8 1.7-2.8 2.1 0 1.6 1.8 2 3.2 2.3 4.4.9 4.6 2.8 4.6 3.9 0 1.4-.7 4.1-5 4.1A6.2 6.2 0 017 16.4l1.5-1.1c.4.6 1.6 2 3.7 2 1.6 0 2.5-.4 3-1.2.4-.8.3-2-.8-2.6-.7-.4-1.6-.7-2.9-1-1-.2-3.9-.8-3.9-3.6C7.6 6 10.3 5 12.4 5c2.9 0 4.2 1.6 4.7 2.4l-1.5 1.1z"></path><path d="M5 11h14a1 1 0 010 2H5a1 1 0 010-2z" fill-rule="nonzero"></path></g></svg>`;
  // protected icon = `<svg viewBox="0 0 24 24" style="width: 18px;height: 18px;position: relative;top: -1px;"><path fill="currentColor" d="M23,12V14H18.61C19.61,16.14 19.56,22 12.38,22C4.05,22.05 4.37,15.5 4.37,15.5L8.34,15.55C8.37,18.92 11.5,18.92 12.12,18.88C12.76,18.83 15.15,18.84 15.34,16.5C15.42,15.41 14.32,14.58 13.12,14H1V12H23M19.41,7.89L15.43,7.86C15.43,7.86 15.6,5.09 12.15,5.08C8.7,5.06 9,7.28 9,7.56C9.04,7.84 9.34,9.22 12,9.88H5.71C5.71,9.88 2.22,3.15 10.74,2C19.45,0.8 19.43,7.91 19.41,7.89Z" /></svg>`;
  // protected icon = `<svg fill="currentColor" viewBox="0 0 24 24"><g><path fill="none" d="M0 0h24v24H0z"></path><path d="M17.154 14c.23.516.346 1.09.346 1.72 0 1.342-.524 2.392-1.571 3.147C14.88 19.622 13.433 20 11.586 20c-1.64 0-3.263-.381-4.87-1.144V16.6c1.52.877 3.075 1.316 4.666 1.316 2.551 0 3.83-.732 3.839-2.197a2.21 2.21 0 0 0-.648-1.603l-.12-.117H3v-2h18v2h-3.846zm-4.078-3H7.629a4.086 4.086 0 0 1-.481-.522C6.716 9.92 6.5 9.246 6.5 8.452c0-1.236.466-2.287 1.397-3.153C8.83 4.433 10.271 4 12.222 4c1.471 0 2.879.328 4.222.984v2.152c-1.2-.687-2.515-1.03-3.946-1.03-2.48 0-3.719.782-3.719 2.346 0 .42.218.786.654 1.099.436.313.974.562 1.613.75.62.18 1.297.414 2.03.699z"></path></g></svg>`;

  protected handler(e: MouseEvent) {
    e.preventDefault();
    this.editor.tiptapEditor.chain().focus().toggleStrike().run();
  }
}