Add deflateRaw method

Author: pimterry

README.md

@@ -47,6 +47,7 @@ This library also exports consistent async methods to compress and decompress ea
 * `gzip`
 * `gunzip`
 * `deflate`
+* `deflateRaw`
 * `inflate`
 * `inflateRaw`
 * `brotliCompress`

src/index.ts

@@ -19,6 +19,7 @@ export type SUPPORTED_ENCODING =
 export const gzip = promisify(zlib.gzip);
 export const gunzip = promisify(zlib.gunzip);
 export const deflate = promisify(zlib.deflate);
+export const deflateRaw = promisify(zlib.deflateRaw);
 export const inflate = promisify(zlib.inflate);
 export const inflateRaw = promisify(zlib.inflateRaw);
 

test/encode.spec.ts

@@ -7,7 +7,7 @@ import chaiAsPromised = require("chai-as-promised");
 chai.use(chaiAsPromised);
 const expect = chai.expect;
 
-import { encodeBuffer } from '../src/index';
+import { encodeBuffer, deflateRaw } from '../src/index';
 
 function bufferToArrayBuffer(buffer: Buffer): ArrayBuffer {
     return buffer.buffer.slice(buffer.byteOffset, buffer.byteLength + buffer.byteOffset)
@@ -57,6 +57,11 @@ describe("Encode", () => {
         expect(zlib.inflateSync(body).toString()).to.equal('Response to deflate');
     });
 
+    it('should encode raw deflate bodies', async () => {
+        const body = await deflateRaw(Buffer.from('Response to raw deflate'), { level: 1 });
+        expect(zlib.inflateRawSync(body).toString()).to.equal('Response to raw deflate');
+    });
+
     it('should encode brotli bodies', async () => {
         const body = await encodeBuffer(Buffer.from('Response to brotlify brotlify'), 'br');
         expect(Buffer.from(