diff --git a/lib/internal/v8_prof_polyfill.js b/lib/internal/v8_prof_polyfill.js
index 5f5922c5386543..f266849628fbe8 100644
--- a/lib/internal/v8_prof_polyfill.js
+++ b/lib/internal/v8_prof_polyfill.js
@@ -120,8 +120,8 @@ function versionCheck(firstLine, expected) {
   // "v8-version,$major,$minor,$build,$patch[,$embedder],$candidate"
   // whereas process.versions.v8 is either "$major.$minor.$build-$embedder" or
   // "$major.$minor.$build.$patch-$embedder".
-  firstLine = firstLine.split(',');
-  const curVer = expected.split(/[.\-]/);
+  firstLine = StringPrototypeSplit(firstLine, ',');
+  const curVer = StringPrototypeSplit(expected, /[.\-]/);
   if (firstLine.length !== 6 && firstLine.length !== 7 ||
       firstLine[0] !== 'v8-version') {
     return 'Unable to read v8-version from log file.';
diff --git a/lib/v8.js b/lib/v8.js
index 2ecb4c06a1931e..4d26ddb85e1c4e 100644
--- a/lib/v8.js
+++ b/lib/v8.js
@@ -17,6 +17,8 @@
 const {
   Array,
   ArrayBuffer,
+  ArrayPrototypeForEach,
+  ArrayPrototypePush,
   DataView,
   Error,
   Float32Array,
@@ -198,13 +200,14 @@ const arrayBufferViewTypeToIndex = new SafeMap();
 
 {
   const dummy = new ArrayBuffer();
-  for (const [i, ctor] of arrayBufferViewTypes.entries()) {
+  ArrayPrototypeForEach(arrayBufferViewTypes, (ctor, i) => {
     const tag = ObjectPrototypeToString(new ctor(dummy));
     arrayBufferViewTypeToIndex.set(tag, i);
-  }
+  });
 }
 
-const bufferConstructorIndex = arrayBufferViewTypes.push(FastBuffer) - 1;
+const bufferConstructorIndex =
+  ArrayPrototypePush(arrayBufferViewTypes, FastBuffer) - 1;
 
 class DefaultSerializer extends Serializer {
   constructor() {