lib: refine keyCheck mode condition for strict comparisons

Author: miguelmarcondesf

lib/assert.js

@@ -313,7 +313,10 @@ Assert.prototype.deepStrictEqual = function deepStrictEqual(actual, expected, me
     throw new ERR_MISSING_ARGS('actual', 'expected');
   }
   if (isDeepEqual === undefined) lazyLoadComparison();
-  if (!isDeepStrictEqual(actual, expected, { __proto__: null, skipPrototypeComparison: this?.[kOptions]?.skipPrototypeComparison })) {
+  if (!isDeepStrictEqual(actual, expected, {
+    __proto__: null,
+    skipPrototypeComparison: this?.[kOptions]?.skipPrototypeComparison,
+  })) {
     innerFail({
       actual,
       expected,
@@ -339,7 +342,10 @@ function notDeepStrictEqual(actual, expected, message) {
     throw new ERR_MISSING_ARGS('actual', 'expected');
   }
   if (isDeepEqual === undefined) lazyLoadComparison();
-  if (isDeepStrictEqual(actual, expected, { __proto__: null, skipPrototypeComparison: this?.[kOptions]?.skipPrototypeComparison })) {
+  if (isDeepStrictEqual(actual, expected, {
+    __proto__: null,
+    skipPrototypeComparison: this?.[kOptions]?.skipPrototypeComparison,
+  })) {
     innerFail({
       actual,
       expected,

lib/internal/util/comparisons.js

@@ -459,7 +459,7 @@ function keyCheck(val1, val2, mode, memos, iterationType, keys2) {
       }
     } else if (keys2.length !== (keys1 = ObjectKeys(val1)).length) {
       return false;
-    } else if (mode >= kStrict) {
+    } else if (mode === kStrict || mode === kStrictWithoutPrototypes) {
       const symbolKeysA = getOwnSymbols(val1);
       if (symbolKeysA.length !== 0) {
         let count = 0;