zlib: remove mentions of unexposed Z_TREES constant

hkleungai · aduh95 · commit b3cd847528d9 · 2025-06-10T15:10:04.000+02:00
`Z_TREES` is never exposed on `DefineZlibConstants()`, hence it shall be removed. This fix is applicable to v18+. Refs: https://github.com/nodejs/node/blob/main/src/node_zlib.cc PR-URL: #58371 Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com> Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
diff --git a/doc/api/zlib.md b/doc/api/zlib.md
@@ -615,7 +615,6 @@ Allowed flush values.
 * `zlib.constants.Z_FULL_FLUSH`
 * `zlib.constants.Z_FINISH`
 * `zlib.constants.Z_BLOCK`
-* `zlib.constants.Z_TREES`
 
 Return codes for the compression/decompression functions. Negative
 values are errors, positive values are used for special but normal
diff --git a/lib/zlib.js b/lib/zlib.js
@@ -325,7 +325,7 @@ ZlibBase.prototype._final = function(callback) {
 // This is currently only used to figure out which flush flag to use for the
 // last chunk.
 // Roughly, the following holds:
-// Z_NO_FLUSH (< Z_TREES) < Z_BLOCK < Z_PARTIAL_FLUSH <
+// Z_NO_FLUSH < Z_BLOCK < Z_PARTIAL_FLUSH <
 //     Z_SYNC_FLUSH < Z_FULL_FLUSH < Z_FINISH
 const flushiness = [];
 const kFlushFlagList = [Z_NO_FLUSH, Z_BLOCK, Z_PARTIAL_FLUSH,
