export const prototypeInterceptor = { install() { // 解决低版本手机不识别 array.at() 导致运行报错的问题 if (typeof Array.prototype.at !== 'function') { // eslint-disable-next-line no-extend-native Array.prototype.at = function (index: number) { if (index < 0) return this[this.length + index] if (index >= this.length) return undefined return this[index] } } }, }