function getActualWidthOfChars(text, options = {}) {
  const { size = 14, family = "Microsoft YaHei" } = options;
  const canvas = document.createElement("canvas");
  const ctx = canvas.getContext("2d");
  ctx.font = `${size}px ${family}`;
  const metrics = ctx.measureText(text);
  const actual = Math.abs(metrics.actualBoundingBoxLeft) + Math.abs(metrics.actualBoundingBoxRight);
  return Math.max(metrics.width, actual);
}