@tarojs/components中的options.singleton怎么设置？

zhulin2609

var singleton = null;
var	singletonCounter = 0;
var	stylesInsertedAtTop = [];

var	fixUrls = __webpack_require__(15);

module.exports = function(list, options) {
	if (typeof DEBUG !== "undefined" && DEBUG) {
		if (typeof document !== "object") throw new Error("The style-loader cannot be used in a non-browser environment");
	}

	options = options || {};

	options.attrs = typeof options.attrs === "object" ? options.attrs : {};

	// Force single-tag solution on IE6-9, which has a hard limit on the # of <style>
	// tags it will allow on a page
	if (!options.singleton && typeof options.singleton !== "boolean") options.singleton = isOldIE();