diff --git a/benchmark/_http-benchmarkers.js b/benchmark/_http-benchmarkers.js
index baa50f72cde906..f66c36ab1d3d19 100644
--- a/benchmark/_http-benchmarkers.js
+++ b/benchmark/_http-benchmarkers.js
@@ -35,7 +35,7 @@ class AutocannonBenchmarker {
     let result;
     try {
       result = JSON.parse(output);
-    } catch (err) {
+    } catch {
       return undefined;
     }
     if (!result || !result.requests || !result.requests.average) {
@@ -106,7 +106,7 @@ class TestDoubleBenchmarker {
     let result;
     try {
       result = JSON.parse(output);
-    } catch (err) {
+    } catch {
       return undefined;
     }
     return result.throughput;
diff --git a/benchmark/child_process/child-process-exec-stdout.js b/benchmark/child_process/child-process-exec-stdout.js
index a891026b86971f..88c02533f605c2 100644
--- a/benchmark/child_process/child-process-exec-stdout.js
+++ b/benchmark/child_process/child-process-exec-stdout.js
@@ -30,7 +30,7 @@ function childProcessExecStdout({ dur, len }) {
       // Sometimes there's a yes.exe process left hanging around on Windows.
       try {
         execSync(`taskkill /f /t /pid ${child.pid}`);
-      } catch (_) {
+      } catch {
         // this is a best effort kill. stderr is piped to parent for tracing.
       }
     } else {
diff --git a/benchmark/fs/read-stream-throughput.js b/benchmark/fs/read-stream-throughput.js
index 3af80132725ec0..7f290a310b592c 100644
--- a/benchmark/fs/read-stream-throughput.js
+++ b/benchmark/fs/read-stream-throughput.js
@@ -55,7 +55,7 @@ function runTest() {
   });
 
   rs.on('end', function() {
-    try { fs.unlinkSync(filename); } catch (e) {}
+    try { fs.unlinkSync(filename); } catch {}
     // MB/sec
     bench.end(bytes / (1024 * 1024));
   });
@@ -74,7 +74,7 @@ function makeFile() {
     buf.fill('x');
   }
 
-  try { fs.unlinkSync(filename); } catch (e) {}
+  try { fs.unlinkSync(filename); } catch {}
   var w = 1024;
   const ws = fs.createWriteStream(filename);
   ws.on('close', runTest);
diff --git a/benchmark/fs/readfile-partitioned.js b/benchmark/fs/readfile-partitioned.js
index be3b7fd057bbe0..6e355c158da850 100644
--- a/benchmark/fs/readfile-partitioned.js
+++ b/benchmark/fs/readfile-partitioned.js
@@ -24,7 +24,7 @@ const bench = common.createBenchmark(main, {
 
 function main(conf) {
   const len = +conf.len;
-  try { fs.unlinkSync(filename); } catch (e) {}
+  try { fs.unlinkSync(filename); } catch {}
   var data = Buffer.alloc(len, 'x');
   fs.writeFileSync(filename, data);
   data = null;
@@ -39,7 +39,7 @@ function main(conf) {
     const totalOps = reads + zips;
     benchEnded = true;
     bench.end(totalOps);
-    try { fs.unlinkSync(filename); } catch (e) {}
+    try { fs.unlinkSync(filename); } catch {}
   }, +conf.dur * 1000);
 
   function read() {
diff --git a/benchmark/fs/readfile.js b/benchmark/fs/readfile.js
index 282b4ac7621340..36439bdf909f1d 100644
--- a/benchmark/fs/readfile.js
+++ b/benchmark/fs/readfile.js
@@ -17,7 +17,7 @@ const bench = common.createBenchmark(main, {
 });
 
 function main({ len, dur, concurrent }) {
-  try { fs.unlinkSync(filename); } catch (e) {}
+  try { fs.unlinkSync(filename); } catch {}
   var data = Buffer.alloc(len, 'x');
   fs.writeFileSync(filename, data);
   data = null;
@@ -28,7 +28,7 @@ function main({ len, dur, concurrent }) {
   setTimeout(function() {
     benchEnded = true;
     bench.end(reads);
-    try { fs.unlinkSync(filename); } catch (e) {}
+    try { fs.unlinkSync(filename); } catch {}
     process.exit(0);
   }, dur * 1000);
 
diff --git a/benchmark/fs/write-stream-throughput.js b/benchmark/fs/write-stream-throughput.js
index 60ad47bc4eabe1..baf98f849fed07 100644
--- a/benchmark/fs/write-stream-throughput.js
+++ b/benchmark/fs/write-stream-throughput.js
@@ -33,7 +33,7 @@ function main({ dur, encodingType, size }) {
       throw new Error(`invalid encodingType: ${encodingType}`);
   }
 
-  try { fs.unlinkSync(filename); } catch (e) {}
+  try { fs.unlinkSync(filename); } catch {}
 
   var started = false;
   var ended = false;
@@ -45,7 +45,7 @@ function main({ dur, encodingType, size }) {
   f.on('finish', function() {
     ended = true;
     const written = fs.statSync(filename).size / 1024;
-    try { fs.unlinkSync(filename); } catch (e) {}
+    try { fs.unlinkSync(filename); } catch {}
     bench.end(written / 1024);
   });
 
diff --git a/benchmark/misc/punycode.js b/benchmark/misc/punycode.js
index a55660fbc07247..c9eef1f7096fac 100644
--- a/benchmark/misc/punycode.js
+++ b/benchmark/misc/punycode.js
@@ -4,7 +4,7 @@ const common = require('../common.js');
 let icu;
 try {
   icu = common.binding('icu');
-} catch (err) {}
+} catch {}
 const punycode = require('punycode');
 
 const bench = common.createBenchmark(main, {
diff --git a/benchmark/module/module-loader.js b/benchmark/module/module-loader.js
index c79e1a73d4f21a..e780d6376b5e8d 100644
--- a/benchmark/module/module-loader.js
+++ b/benchmark/module/module-loader.js
@@ -14,7 +14,7 @@ const bench = common.createBenchmark(main, {
 
 function main({ n, fullPath, useCache }) {
   tmpdir.refresh();
-  try { fs.mkdirSync(benchmarkDirectory); } catch (e) {}
+  try { fs.mkdirSync(benchmarkDirectory); } catch {}
   for (var i = 0; i <= n; i++) {
     fs.mkdirSync(`${benchmarkDirectory}${i}`);
     fs.writeFileSync(
diff --git a/benchmark/napi/function_args/index.js b/benchmark/napi/function_args/index.js
index 4beab531c17301..c41b5d78abadd9 100644
--- a/benchmark/napi/function_args/index.js
+++ b/benchmark/napi/function_args/index.js
@@ -11,14 +11,14 @@ let napi;
 
 try {
   v8 = require('./build/Release/binding');
-} catch (err) {
+} catch {
   console.error(`${__filename}: V8 Binding failed to load`);
   process.exit(0);
 }
 
 try {
   napi = require('./build/Release/napi_binding');
-} catch (err) {
+} catch {
   console.error(`${__filename}: NAPI-Binding failed to load`);
   process.exit(0);
 }
diff --git a/benchmark/napi/function_call/index.js b/benchmark/napi/function_call/index.js
index cbc512c9729137..272c41662d2830 100644
--- a/benchmark/napi/function_call/index.js
+++ b/benchmark/napi/function_call/index.js
@@ -13,7 +13,7 @@ const common = require('../../common.js');
 
 try {
   var binding = require('./build/Release/binding');
-} catch (er) {
+} catch {
   console.error('misc/function_call.js Binding failed to load');
   process.exit(0);
 }
@@ -22,7 +22,7 @@ const cxx = binding.hello;
 let napi_binding;
 try {
   napi_binding = require('./build/Release/napi_binding');
-} catch (er) {
+} catch {
   console.error('misc/function_call/index.js NAPI-Binding failed to load');
   process.exit(0);
 }