disable_cursor_blink_list.js

// Google Apps Script editor
// Based on https://stackoverflow.com/a/62184934/1637178
var sts = document.querySelectorAll('head > style');
var st = sts[sts.length - 1];
var tc = st.textContent;
tc = tc + "\n.monaco-editor .cursors-layer .cursor { visibility: visible !important; }";
st.textContent = tc;

// ACE editor
const addCss = text => {
  const style = document.createElement("style");
  style.innerHTML = text;
  document.querySelector('head').appendChild(style);
}

/* dbdiagram disable cursor blink */
addCss('.ace_cursor { opacity: 1 !important; }');