Function groupingCss

packages/utils/src/css-helper.ts:16–33

(css: string)

// 给 css 分组
function groupingCss(css: string) {
  let stackLength = 0;
  let startIndex = 0;
  const group: string[] = [];
  css.split('').forEach((char, index) => {
    if (char === '{') {
      stackLength++;
    }
    if (char === '}') {
      if (stackLength === 1) {
        group.push(css.substring(startIndex, index + 1));
        startIndex = index + 1;
      }
      stackLength--;
    }
  });
  return group;
}

function isString(str: any): str is string {
  return {}.toString.call(str) === '[object String]';