uview-plus组件库全面升级更新，订单结算判断支付方式是否可用代码调整，公众号关注二维码修改

uni_modules/lime-shared/isString/index.ts

@@ -0,0 +1,19 @@
+// @ts-nocheck
+/**
+ * 检查一个值是否为字符串类型
+ * @param str 要检查的值
+ * @returns 如果值的类型是字符串类型，则返回 true；否则返回 false
+ */
+// #ifndef UNI-APP-X && APP
+// export const isString = (str: unknown): str is string => typeof str === 'string';
+export function isString (str: unknown): str is string {
+	return typeof str == 'string'
+}
+// #endif
+
+
+// #ifdef UNI-APP-X && APP
+export function isString (str: any|null): boolean {
+	return typeof str == 'string'
+}
+// #endif