compression-webpack-plugin压缩原理，js 图片压缩库

使用 pako 压缩库压缩你的 JavaScript 代码

什么是 pako 压缩库？

pako 是一个开源JavaScript 压缩库，可用于压缩和解压缩数据，包括字符串、数组和二进制数据。它是zlib 库的移植版本，具有高效、快速的压缩和解压性能。

为什么需要使用 pako 压缩库？

在前端开发中，我们经常需要加载大量的JavaScript代码文件，这可能会占用大量的带宽和加载时间。使用pako压缩库将JavaScript代码文件压缩为更小的大小，从而减少加载时间和带宽消耗。

如何使用 pako 压缩库？

使用pako压缩库非常简单，只需按照以下步骤操作：

1.安装pako压缩库

您可以使用npm 安装pako 压缩库：

````

npm 安装pako

````

或者直接从GitHub下载pako压缩库的源代码。

2. 缩小JavaScript 代码

可以使用pako 压缩库将JavaScript 代码压缩为更小的大小。下面是使用pako 压缩库压缩JavaScript 代码的示例：

````

const pako=require(\'pako\');

const uncompressed=\'console.log(\'你好，世界！\');\';

const 压缩=pako.deflate(未压缩， { level: 9 });

console.log(\'未压缩大小：\', uncompressed.length);

console.log(\'压缩后的大小：\',compressed.length);

````

在上面的例子中，我们首先导入pako压缩库并定义一个未压缩的JavaScript代码字符串。然后，我们使用“pako.deflate”方法将未压缩的字符串压缩为压缩的二进制数据数组。最后，我们输出未压缩和压缩的字符串大小。

3.解压JavaScript代码

压缩后的JavaScript 代码还可以使用pako 压缩库解压缩为原始JavaScript 代码字符串。下面是使用pako 压缩库解压JavaScript 代码的示例：

````

const pako=require(\'pako\');

const 压缩=新Uint8Array([120, 156, 99, 96, 96, 8, 0, 0, 0, 255, 255, 3, 0, 19, 72, 101, 108, 108, 111, 44, 32, 119 , 111, 114, 108, 100, 33, 0, 178, 1, 68, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102 , 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102, 102,