diff --git a/lib/repl.js b/lib/repl.js
index d9efb8c5ece523..bdc3909709a632 100644
--- a/lib/repl.js
+++ b/lib/repl.js
@@ -1142,15 +1142,14 @@ function complete(line, callback) {
       paths = module.paths.concat(CJSModule.globalPaths);
     }
 
-    for (let i = 0; i < paths.length; i++) {
-      dir = path.resolve(paths[i], subdir);
+    for (const pathEntry of paths) {
+      dir = path.resolve(pathEntry, subdir);
       try {
         files = fs.readdirSync(dir);
       } catch {
         continue;
       }
-      for (let f = 0; f < files.length; f++) {
-        const name = files[f];
+      for (const name of files) {
         const ext = path.extname(name);
         const base = name.slice(0, -ext.length);
         if (versionedFileNamesRe.test(base) || name === '.npm') {
@@ -1170,8 +1169,8 @@ function complete(line, callback) {
           } catch {
             continue;
           }
-          for (let s = 0; s < subfiles.length; s++) {
-            if (indexRe.test(subfiles[s])) {
+          for (const subfile of subfiles) {
+            if (indexRe.test(subfile)) {
               group.push(subdir + name);
             }
           }
@@ -1295,9 +1294,9 @@ function complete(line, callback) {
       }
 
       if (memberGroups.length) {
-        for (let i = 0; i < memberGroups.length; i++) {
+        for (const memberGroup of memberGroups) {
           completionGroups.push(
-            memberGroups[i].map((member) => `${expr}.${member}`));
+            memberGroup.map((member) => `${expr}.${member}`));
         }
         if (filter) {
           filter = `${expr}.${filter}`;
@@ -1316,8 +1315,8 @@ function complete(line, callback) {
     // Filter, sort (within each group), uniq and merge the completion groups.
     if (completionGroups.length && filter) {
       const newCompletionGroups = [];
-      for (let i = 0; i < completionGroups.length; i++) {
-        group = completionGroups[i]
+      for (const completionGroup of completionGroups) {
+        group = completionGroup
           .filter((elem) => elem.indexOf(filter) === 0);
         if (group.length) {
           newCompletionGroups.push(group);
@@ -1516,8 +1515,7 @@ function defineDefaultCommands(repl) {
         (max, name) => MathMax(max, name.length),
         0
       );
-      for (let n = 0; n < names.length; n++) {
-        const name = names[n];
+      for (const name of names) {
         const cmd = this.commands[name];
         const spaces = ' '.repeat(longestNameLength - name.length + 3);
         const line = `.${name}${cmd.help ? spaces + cmd.help : ''}\n`;