From 11d5e95f3031a2a3e8d97bb0406f650d20699864 Mon Sep 17 00:00:00 2001
From: Yagiz Nizipli <yagiz@nizipli.com>
Date: Sun, 18 Aug 2024 15:38:55 -0400
Subject: [PATCH] zlib: simplify validators

---
 lib/internal/validators.js | 43 ++++++++++++++++++++++++++++++++++
 lib/zlib.js                | 48 +++-----------------------------------
 2 files changed, 46 insertions(+), 45 deletions(-)

diff --git a/lib/internal/validators.js b/lib/internal/validators.js
index 298eab9bbdba2f..9798e0b5fe353c 100644
--- a/lib/internal/validators.js
+++ b/lib/internal/validators.js
@@ -7,6 +7,7 @@ const {
   ArrayPrototypeIncludes,
   ArrayPrototypeJoin,
   ArrayPrototypeMap,
+  NumberIsFinite,
   NumberIsInteger,
   NumberIsNaN,
   NumberMAX_SAFE_INTEGER,
@@ -567,6 +568,46 @@ const validateLinkHeaderValue = hideStackFrames((hints) => {
   );
 });
 
+// 1. Returns false for undefined and NaN
+// 2. Returns true for finite numbers
+// 3. Throws ERR_INVALID_ARG_TYPE for non-numbers
+// 4. Throws ERR_OUT_OF_RANGE for infinite numbers
+const validateFiniteNumber = hideStackFrames((number, name) => {
+  // Common case
+  if (number === undefined) {
+    return false;
+  }
+
+  if (NumberIsFinite(number)) {
+    return true; // Is a valid number
+  }
+
+  if (NumberIsNaN(number)) {
+    return false;
+  }
+
+  validateNumber(number, name);
+
+  // Infinite numbers
+  throw new ERR_OUT_OF_RANGE(name, 'a finite number', number);
+});
+
+// 1. Returns def for number when it's undefined or NaN
+// 2. Returns number for finite numbers >= lower and <= upper
+// 3. Throws ERR_INVALID_ARG_TYPE for non-numbers
+// 4. Throws ERR_OUT_OF_RANGE for infinite numbers or numbers > upper or < lower
+const checkRangesOrGetDefault = hideStackFrames(
+  (number, name, lower, upper, def) => {
+    if (!validateFiniteNumber(number, name)) {
+      return def;
+    }
+    if (number < lower || number > upper) {
+      throw new ERR_OUT_OF_RANGE(name, `>= ${lower} and <= ${upper}`, number);
+    }
+    return number;
+  },
+);
+
 module.exports = {
   isInt32,
   isUint32,
@@ -601,4 +642,6 @@ module.exports = {
   validateAbortSignal,
   validateLinkHeaderValue,
   validateInternalField,
+  validateFiniteNumber,
+  checkRangesOrGetDefault,
 };
diff --git a/lib/zlib.js b/lib/zlib.js
index 1a00ea59b484a6..a2c092f1037261 100644
--- a/lib/zlib.js
+++ b/lib/zlib.js
@@ -28,7 +28,6 @@ const {
   ArrayPrototypePush,
   FunctionPrototypeBind,
   MathMaxApply,
-  NumberIsFinite,
   NumberIsNaN,
   ObjectDefineProperties,
   ObjectDefineProperty,
@@ -51,7 +50,6 @@ const {
     ERR_ZLIB_INITIALIZATION_FAILED,
   },
   genericNodeError,
-  hideStackFrames,
 } = require('internal/errors');
 const { Transform, finished } = require('stream');
 const {
@@ -71,9 +69,10 @@ const {
 } = require('buffer');
 const { owner_symbol } = require('internal/async_hooks').symbols;
 const {
+  checkRangesOrGetDefault,
   validateFunction,
-  validateNumber,
   validateUint32,
+  validateFiniteNumber,
 } = require('internal/validators');
 
 const kFlushFlag = Symbol('kFlushFlag');
@@ -195,47 +194,6 @@ function zlibOnError(message, errno, code) {
   self[kError] = error;
 }
 
-// 1. Returns false for undefined and NaN
-// 2. Returns true for finite numbers
-// 3. Throws ERR_INVALID_ARG_TYPE for non-numbers
-// 4. Throws ERR_OUT_OF_RANGE for infinite numbers
-const checkFiniteNumber = hideStackFrames((number, name) => {
-  // Common case
-  if (number === undefined) {
-    return false;
-  }
-
-  if (NumberIsFinite(number)) {
-    return true; // Is a valid number
-  }
-
-  if (NumberIsNaN(number)) {
-    return false;
-  }
-
-  validateNumber.withoutStackTrace(number, name);
-
-  // Infinite numbers
-  throw new ERR_OUT_OF_RANGE.HideStackFramesError(name, 'a finite number', number);
-});
-
-// 1. Returns def for number when it's undefined or NaN
-// 2. Returns number for finite numbers >= lower and <= upper
-// 3. Throws ERR_INVALID_ARG_TYPE for non-numbers
-// 4. Throws ERR_OUT_OF_RANGE for infinite numbers or numbers > upper or < lower
-const checkRangesOrGetDefault = hideStackFrames(
-  (number, name, lower, upper, def) => {
-    if (!checkFiniteNumber.withoutStackTrace(number, name)) {
-      return def;
-    }
-    if (number < lower || number > upper) {
-      throw new ERR_OUT_OF_RANGE.HideStackFramesError(name,
-                                                      `>= ${lower} and <= ${upper}`, number);
-    }
-    return number;
-  },
-);
-
 const FLUSH_BOUND = [
   [ Z_NO_FLUSH, Z_BLOCK ],
   [ BROTLI_OPERATION_PROCESS, BROTLI_OPERATION_EMIT_METADATA ],
@@ -261,7 +219,7 @@ function ZlibBase(opts, mode, handle, { flush, finishFlush, fullFlush }) {
 
   if (opts) {
     chunkSize = opts.chunkSize;
-    if (!checkFiniteNumber(chunkSize, 'options.chunkSize')) {
+    if (!validateFiniteNumber(chunkSize, 'options.chunkSize')) {
       chunkSize = Z_DEFAULT_CHUNK;
     } else if (chunkSize < Z_MIN_CHUNK) {
       throw new ERR_OUT_OF_RANGE('options.chunkSize',