判断

1. 环境判断

export declare const isProd: boolean;
export declare const getEnv: () => {
    isiOS: boolean;
    isIOS: boolean;
    isAndroid: boolean;
    isQQ: boolean;
    isWechat: boolean;
    isMSDK: boolean;
    isSlugSDK: boolean;
    env: {
        device: string;
        platform: string;
        sdk: string;
    };
};
export declare const isMSDKV3: ({ search, hash }: Location) => boolean;
export declare const isMSDKV5: ({ search, hash }: Location) => boolean;

export declare const webpCheck: () => Promise<boolean>;
export declare const isSupportWebp: () => boolean;

重要更新：出于 tree-shacking 的考量，停止使用立即计算结果的方式，替换方法如下：

// 旧
import { isSlugSDK } from '@tencent/slug-function'

// 新
import { getEnv } from '@tencent/slug-function'
const { isSlugSDK } = getEnv()

2. 类型判断

export declare const getType: (value: any) => string;
export declare function isObject(obj: any): obj is Object;
export declare function isRegExp(v: any): v is RegExp;
export declare const isFunction: (value: any) => value is Function;
export declare const isSymbol: (value: any) => value is Symbol;
export declare const isArray: <T = any>(value: any) => value is T[];
export declare const isNumber: (value: any) => value is Number;
export declare const isBoolean: (value: any) => value is Boolean;
export declare const isString: (value: any) => value is String;
export declare const isDate: (value: any) => value is Date;
export declare const isPromise: <T = any>(value: any) => value is Promise<T>;

export declare const isEmpty: (value: any) => boolean;
export declare const isNotEmpty: (value: any) => boolean;
export declare const isEmptyString: (s: string) => boolean;

3. checkIfNeedUpdate

检查是否需要更新

定义：

/**
 * 检查是否需要更新
 * @param currentVersion 当前版本
 * @param remoteVersion  最新版本
 */
export declare function checkIfNeedUpdate(currentVersion: string, remoteVersion: string): boolean;