diff --git a/lib/internal/bootstrap/node.js b/lib/internal/bootstrap/node.js
index 5d509e4e37b..96d07331985 100644
--- a/lib/internal/bootstrap/node.js
+++ b/lib/internal/bootstrap/node.js
@@ -26,7 +26,7 @@
 
     setupProcessObject();
 
-    // do this good and early, since it handles errors.
+    // Do this good and early, since it handles errors.
     setupProcessFatal();
 
     setupV8();
@@ -108,7 +108,7 @@
     });
     process.argv[0] = process.execPath;
 
-    // Handle `--debug*` deprecation and invalidation
+    // Handle `--debug*` deprecation and invalidation.
     if (process._invalidDebug) {
       process.emitWarning(
         '`node --debug` and `node --debug-brk` are invalid. ' +
@@ -177,7 +177,7 @@
           'DeprecationWarning', 'DEP0068');
       }
 
-      // Start the debugger agent
+      // Start the debugger agent.
       process.nextTick(function() {
         NativeModule.require('internal/deps/node-inspect/lib/_inspect').start();
       });
@@ -186,7 +186,7 @@
       NativeModule.require('internal/v8_prof_processor');
 
     } else {
-      // There is user code to be run
+      // There is user code to be run.
 
       // If this is a worker in cluster mode, start up the communication
       // channel. This needs to be done before any user code gets executed
@@ -204,7 +204,7 @@
         perf.markMilestone(NODE_PERFORMANCE_MILESTONE_MODULE_LOAD_START);
         perf.markMilestone(NODE_PERFORMANCE_MILESTONE_MODULE_LOAD_END);
         // User passed '-e' or '--eval' arguments to Node without '-i' or
-        // '--interactive'
+        // '--interactive'.
 
         perf.markMilestone(
           NODE_PERFORMANCE_MILESTONE_PRELOAD_MODULE_LOAD_START);
@@ -218,7 +218,7 @@
         evalScript('[eval]');
       } else if (process.argv[1] && process.argv[1] !== '-') {
         perf.markMilestone(NODE_PERFORMANCE_MILESTONE_MODULE_LOAD_START);
-        // make process.argv[1] into a full path
+        // Make process.argv[1] into a full path.
         const path = NativeModule.require('path');
         process.argv[1] = path.resolve(process.argv[1]);
 
@@ -230,10 +230,10 @@
         preloadModules();
         perf.markMilestone(
           NODE_PERFORMANCE_MILESTONE_PRELOAD_MODULE_LOAD_END);
-        // check if user passed `-c` or `--check` arguments to Node.
+        // Check if user passed `-c` or `--check` arguments to Node.
         if (process._syntax_check_only != null) {
           const fs = NativeModule.require('fs');
-          // read the source
+          // Read the source.
           const filename = CJSModule._resolveFilename(process.argv[1]);
           const source = fs.readFileSync(filename, 'utf-8');
           checkScriptSyntax(source, filename);
@@ -365,7 +365,7 @@
   function setupGlobalConsole() {
     const originalConsole = global.console;
     const CJSModule = NativeModule.require('internal/modules/cjs/loader');
-    // Setup Node.js global.console
+    // Setup Node.js global.console.
     const wrappedConsole = NativeModule.require('console');
     Object.defineProperty(global, 'console', {
       configurable: true,
@@ -399,7 +399,7 @@
       return;
     }
     const { addCommandLineAPI, consoleCall } = process.binding('inspector');
-    // Setup inspector command line API
+    // Setup inspector command line API.
     const { makeRequireFunction } =
       NativeModule.require('internal/modules/cjs/helpers');
     const path = NativeModule.require('path');
@@ -449,14 +449,14 @@
         exceptionHandlerState.captureFn(er);
       } else if (!process.emit('uncaughtException', er)) {
         // If someone handled it, then great.  otherwise, die in C++ land
-        // since that means that we'll exit the process, emit the 'exit' event
+        // since that means that we'll exit the process, emit the 'exit' event.
         try {
           if (!process._exiting) {
             process._exiting = true;
             process.emit('exit', 1);
           }
-        } catch (er) {
-          // nothing to be done about it at this point.
+        } catch {
+          // Nothing to be done about it at this point.
         }
         try {
           const { kExpandStackSymbol } = NativeModule.require('internal/util');
@@ -467,7 +467,7 @@
       }
 
       // If we handled an error, then make sure any ticks get processed
-      // by ensuring that the next Immediate cycle isn't empty
+      // by ensuring that the next Immediate cycle isn't empty.
       NativeModule.require('timers').setImmediate(noop);
 
       // Emit the after() hooks now that the exception has been handled.
@@ -560,7 +560,7 @@
     process._tickCallback();
   }
 
-  // Load preload modules
+  // Load preload modules.
   function preloadModules() {
     if (process._preload_modules) {
       const {
@@ -577,13 +577,13 @@
       stripShebang, stripBOM
     } = NativeModule.require('internal/modules/cjs/helpers');
 
-    // remove Shebang
+    // Remove Shebang.
     source = stripShebang(source);
-    // remove BOM
+    // Remove BOM.
     source = stripBOM(source);
-    // wrap it
+    // Wrap it.
     source = CJSModule.wrap(source);
-    // compile the script, this will throw if it fails
+    // Compile the script, this will throw if it fails.
     new vm.Script(source, { displayErrors: true, filename });
   }