diff --git a/lib/internal/test_runner/tap_lexer.js b/lib/internal/test_runner/tap_lexer.js
index 24743a1853a833..64ddafb4dba2da 100644
--- a/lib/internal/test_runner/tap_lexer.js
+++ b/lib/internal/test_runner/tap_lexer.js
@@ -1,6 +1,13 @@
 'use strict';
 
-const { SafeSet, MathMax, StringPrototypeIncludes } = primordials;
+const {
+  ArrayPrototypePop,
+  ArrayPrototypePush,
+  MathMax,
+  SafeSet,
+  StringPrototypeIncludes,
+  StringPrototypeTrim,
+} = primordials;
 const {
   codes: { ERR_TAP_LEXER_ERROR },
 } = require('internal/errors');
@@ -136,21 +143,21 @@ class TapLexer {
         this.#lastScannedToken = token;
       }
 
+      ArrayPrototypePush(chunk, token);
       if (token.kind === TokenKind.NEWLINE) {
         // Store the current chunk + NEWLINE token
-        tokens.push([...chunk, token]);
+        ArrayPrototypePush(tokens, chunk);
         chunk = [];
-      } else {
-        chunk.push(token);
       }
     }
 
     if (chunk.length > 0) {
-      tokens.push([...chunk, this.#scanEOL()]);
+      ArrayPrototypePush(chunk, this.#scanEOL());
+      ArrayPrototypePush(tokens, chunk);
     }
 
     // send EOF as a separate chunk
-    tokens.push([this.#scanEOF()]);
+    ArrayPrototypePush(tokens, [this.#scanEOF()]);
 
     return tokens;
   }
@@ -238,7 +245,7 @@ class TapLexer {
       this.#hasTheCurrentCharacterBeenEscaped() ||
       this.#source.peek(1) === TokenKind.WHITESPACE
     ) {
-      this.#escapeStack.pop();
+      ArrayPrototypePop(this.#escapeStack);
       return new Token({
         kind: TokenKind.LITERAL,
         value: char,
@@ -249,7 +256,7 @@ class TapLexer {
     // Otherwise, consume the escape symbol as an escape symbol that should be ignored by the parser
     // we also need to push the escape symbol to the escape stack
     // and consume the next character as a literal (done in the next turn)
-    this.#escapeStack.push(char);
+    ArrayPrototypePush(this.#escapeStack, char);
     return new Token({
       kind: TokenKind.ESCAPE,
       value: char,
@@ -326,7 +333,7 @@ class TapLexer {
     const charHasBeenEscaped = this.#hasTheCurrentCharacterBeenEscaped();
     if (this.#isComment || charHasBeenEscaped) {
       if (charHasBeenEscaped) {
-        this.#escapeStack.pop();
+        ArrayPrototypePop(this.#escapeStack);
       }
 
       return new Token({
@@ -355,7 +362,7 @@ class TapLexer {
       }
     }
 
-    word = word.trim();
+    word = StringPrototypeTrim(word);
 
     if (TapLexer.Keywords.has(word)) {
       const token = this.#scanTAPKeyword(word);
@@ -380,10 +387,9 @@ class TapLexer {
   }
 
   #scanTAPKeyword(word) {
-    const isLastScannedTokenEOLorNewLine = StringPrototypeIncludes(
-      [TokenKind.EOL, TokenKind.NEWLINE],
-      this.#lastScannedToken.kind
-    );
+    const isLastScannedTokenEOLorNewLine =
+      TokenKind.EOL === this.#lastScannedToken.kind ||
+      TokenKind.NEWLINE === this.#lastScannedToken.kind;
 
     if (word === 'TAP' && isLastScannedTokenEOLorNewLine) {
       return new Token({
@@ -479,7 +485,7 @@ class TapLexer {
     // We deliberately do not include "# \ + -"" in this list
     // these are used for comments/reasons explanations, pragma and escape characters
     // whitespace is not included because it is handled separately
-    return '!"$%&\'()*,./:;<=>?@[]^_`{|}~'.indexOf(char) > -1;
+    return StringPrototypeIncludes('!"$%&\'()*,./:;<=>?@[]^_`{|}~', char);
   }
 
   #isWhitespaceSymbol(char) {