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bse64codec-wasm's Introduction

base64编解码器

由c语言实现的WebAssembly base64编解码器。

纯打包后的wasm计算速度比js快5-10倍,但是由于js层面要读写内存、字符编码转换等操作;在较小的数据面前整体不如纯js方案*1计算快,当数据较大时比纯js方案要快。

*1: 对比中的纯js方案采用开源库 js-base64

较大数据测试结果:
较大数据测试结果png

预览

npm run preview -> 浏览器打开 http://127.0.0.1:8080/examples/wasm.html

集成

项目引入即可,采用esm模块系统。

API

  type ResultDescriptor = {
    string: string;
    buffer: Uint8Array;
  }
  
  declare module "base64codec-wasm" {
    export default function (): Promise<{ 
        encode: (source: Uint8Array | string) => ResultDescriptor; 
        decode: (source: Uint8Array | string) => ResultDescriptor;
    }>;
  }

others

另一个js实现的base编解码: https://github.com/lilindog/base64-helper

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