lib: update isDeepStrictEqual to support options and enhance strictness checks

Author: miguelmarcondesf

lib/internal/util/comparisons.js

@@ -127,9 +127,10 @@ const {
   getOwnNonIndexProperties,
 } = internalBinding('util');
 
-const kStrict = 1;
+const kStrict = 2;
+const kStrictWithoutPrototypes = 3;
 const kLoose = 0;
-const kPartial = 2;
+const kPartial = 1;
 
 const kNoIterator = 0;
 const kIsArray = 1;
@@ -458,7 +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) {
       const symbolKeysA = getOwnSymbols(val1);
       if (symbolKeysA.length !== 0) {
         let count = 0;
@@ -1027,7 +1028,10 @@ module.exports = {
   isDeepEqual(val1, val2) {
     return detectCycles(val1, val2, kLoose);
   },
-  isDeepStrictEqual(val1, val2) {
+  isDeepStrictEqual(val1, val2, options) {
+    if (options?.skipPrototypeComparison) {
+      return detectCycles(val1, val2, kStrictWithoutPrototypes);
+    }
     return detectCycles(val1, val2, kStrict);
   },
   isPartialStrictEqual(val1, val2) {

lib/util.js

@@ -487,12 +487,14 @@ module.exports = {
   isArray: deprecate(ArrayIsArray,
                      'The `util.isArray` API is deprecated. Please use `Array.isArray()` instead.',
                      'DEP0044'),
-  isDeepStrictEqual(a, b) {
+  isDeepStrictEqual(a, b, options) {
+    if (options !== undefined) {
+      return require('internal/util/comparisons').isDeepStrictEqual(a, b, options);
+    }
     if (internalDeepEqual === undefined) {
-      internalDeepEqual = require('internal/util/comparisons')
-        .isDeepStrictEqual;
+      internalDeepEqual = require('internal/util/comparisons').isDeepStrictEqual;
     }
-    return internalDeepEqual(a, b);
+    return internalDeepEqual(a, b, options);
   },
   promisify,
   stripVTControlCharacters,