Function toString

packages/core/test/render3/matchers.ts:186–193

(attrs: NamedNodeMap)

  };

  function toString(attrs: NamedNodeMap) {
    let text = '';
    for (let i = 0; i < attrs.length; i++) {
      const attr = attrs[i];
      text += ` ${attr.name}=${JSON.stringify(attr.value)}`;
    }
    return text;
  }

  return matcher;
}