doc: add missing Zstd strategy constants

Annaick · targos · commit e6a6cdb9df24 · 2025-08-21T19:01:11.000+02:00
PR-URL: #59312 Fixes: #59290 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
diff --git a/doc/api/zlib.md b/doc/api/zlib.md
@@ -750,6 +750,34 @@ The most important options are:
 * `ZSTD_c_compressionLevel`
   * Set compression parameters according to pre-defined cLevel table. Default
     level is ZSTD\_CLEVEL\_DEFAULT==3.
+* `ZSTD_c_strategy`
+  * Select the compression strategy.
+  * Possible values are listed in the strategy options section below.
+
+#### Strategy options
+
+The following constants can be used as values for the `ZSTD_c_strategy`
+parameter:
+
+* `zlib.constants.ZSTD_fast`
+* `zlib.constants.ZSTD_dfast`
+* `zlib.constants.ZSTD_greedy`
+* `zlib.constants.ZSTD_lazy`
+* `zlib.constants.ZSTD_lazy2`
+* `zlib.constants.ZSTD_btlazy2`
+* `zlib.constants.ZSTD_btopt`
+* `zlib.constants.ZSTD_btultra`
+* `zlib.constants.ZSTD_btultra2`
+
+Example:
+
+```js
+const stream = zlib.createZstdCompress({
+  params: {
+    [zlib.constants.ZSTD_c_strategy]: zlib.constants.ZSTD_btultra,
+  },
+});
+```
 
 #### Pledged Source Size
 
