stream: add support for deflate-raw format to webstreams compression

this change makes `deflate-raw` a valid parameter for both CompressionStream and DecompressionStream constructors it makes node's implementation consistent with what modern browsers support and what specification calls for see: https://wicg.github.io/compression/#compression-stream PR-URL: #50097 Reviewed-By: Yagiz Nizipli <[email protected]> Reviewed-By: Tobias Nießen <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Filip Skokan <[email protected]>
nodejs · Nov 9, 2023 · 3e14cfb · 3e14cfb
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commit 3e14cfb
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Showing 3 changed files with 19 additions and 5 deletions.
diff --git a/doc/api/webstreams.md b/doc/api/webstreams.md
@@ -1420,9 +1420,13 @@ changes:
 
 <!-- YAML
 added: v17.0.0
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/50097
+    description: format now accepts `deflate-raw` value.
 -->
 
-* `format` {string} One of either `'deflate'` or `'gzip'`.
+* `format` {string} One of `'deflate'`, `'deflate-raw'`, or `'gzip'`.
 
 #### `compressionStream.readable`
 
@@ -1454,9 +1458,13 @@ changes:
 
 <!-- YAML
 added: v17.0.0
+changes:
+  - version: REPLACEME
+    pr-url: https://github.com/nodejs/node/pull/50097
+    description: format now accepts `deflate-raw` value.
 -->
 
-* `format` {string} One of either `'deflate'` or `'gzip'`.
+* `format` {string} One of `'deflate'`, `'deflate-raw'`, or `'gzip'`.
 
 #### `decompressionStream.readable`
 

diff --git a/lib/internal/webstreams/compression.js b/lib/internal/webstreams/compression.js
@@ -35,13 +35,16 @@ class CompressionStream {
   #transform;
 
   /**
-   * @param {'deflate'|'gzip'} format
+   * @param {'deflate'|'deflate-raw'|'gzip'} format
    */
   constructor(format) {
     switch (format) {
       case 'deflate':
         this.#handle = lazyZlib().createDeflate();
         break;
+      case 'deflate-raw':
+        this.#handle = lazyZlib().createDeflateRaw();
+        break;
       case 'gzip':
         this.#handle = lazyZlib().createGzip();
         break;
@@ -80,13 +83,16 @@ class DecompressionStream {
   #transform;
 
   /**
-   * @param {'deflate'|'gzip'} format
+   * @param {'deflate'|'deflate-raw'|'gzip'} format
    */
   constructor(format) {
     switch (format) {
       case 'deflate':
         this.#handle = lazyZlib().createInflate();
         break;
+      case 'deflate-raw':
+        this.#handle = lazyZlib().createInflateRaw();
+        break;
       case 'gzip':
         this.#handle = lazyZlib().createGunzip();
         break;

diff --git a/test/parallel/test-whatwg-webstreams-compression.js b/test/parallel/test-whatwg-webstreams-compression.js
@@ -38,7 +38,7 @@ async function test(format) {
   ]);
 }
 
-Promise.all(['gzip', 'deflate'].map((i) => test(i))).then(common.mustCall());
+Promise.all(['gzip', 'deflate', 'deflate-raw'].map((i) => test(i))).then(common.mustCall());
 
 [1, 'hello', false, {}].forEach((i) => {
   assert.throws(() => new CompressionStream(i), {