// @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