/** * 以下 class 实现参考 * https://github.com/Stuk/jszip/blob/d4702a70834bd953d4c2d0bc155fad795076631a/lib/crc32.js * 该实现主要针对大文件优化、对计算的值进行了 `>>> 0` 运算(为与服务端保持一致) */ export declare class CRC32 { private crc; private table; private makeTable; private append; private compute; private readAsUint8Array; file(file: File): Promise; static file(file: File): Promise; }