创建并返回一个带有给定 [options] 的新的 [DeflateRaw] 对象.
Note: An upgrade of zlib from 1.2.8 to 1.2.11 changed behavior when windowBits is set to 8 for raw deflate streams. zlib would automatically set windowBits to 9 if was initially set to 8. Newer versions of zlib will throw an exception, so Node.js restored the original behavior of upgrading a value of 8 to 9, since passing windowBits = 9 to zlib actually results in a compressed stream that effectively uses an 8-bit window only.
更多内容请参考：Node.js zlib 压缩，或者通过 点击对应菜单 进行查看；