diff --git a/doc/api/assert.md b/doc/api/assert.md
index 55dd99ec23..2ab93c8de0 100644
--- a/doc/api/assert.md
+++ b/doc/api/assert.md
@@ -63,18 +63,18 @@ are evaluated also:
 const assert = require('assert');
 
 const obj1 = {
-  a : {
-    b : 1
+  a: {
+    b: 1
   }
 };
 const obj2 = {
-  a : {
-    b : 2
+  a: {
+    b: 2
   }
 };
 const obj3 = {
-  a : {
-    b : 1
+  a: {
+    b: 1
   }
 };
 const obj4 = Object.create(obj1);
@@ -322,18 +322,18 @@ Tests for any deep inequality. Opposite of [`assert.deepEqual()`][].
 const assert = require('assert');
 
 const obj1 = {
-  a : {
-    b : 1
+  a: {
+    b: 1
   }
 };
 const obj2 = {
-  a : {
-    b : 2
+  a: {
+    b: 2
   }
 };
 const obj3 = {
-  a : {
-    b : 1
+  a: {
+    b: 1
   }
 };
 const obj4 = Object.create(obj1);
@@ -368,10 +368,10 @@ Tests for deep strict inequality. Opposite of [`assert.deepStrictEqual()`][].
 ```js
 const assert = require('assert');
 
-assert.notDeepEqual({a:1}, {a:'1'});
+assert.notDeepEqual({a: 1}, {a: '1'});
 // AssertionError: { a: 1 } notDeepEqual { a: '1' }
 
-assert.notDeepStrictEqual({a:1}, {a:'1'});
+assert.notDeepStrictEqual({a: 1}, {a: '1'});
 // OK
 ```
 
@@ -542,7 +542,7 @@ assert.throws(
     throw new Error('Wrong value');
   },
   function(err) {
-    if ( (err instanceof Error) && /value/.test(err) ) {
+    if ((err instanceof Error) && /value/.test(err)) {
       return true;
     }
   },
diff --git a/doc/api/buffer.md b/doc/api/buffer.md
index d9a48eebbc..d28d8e5071 100644
--- a/doc/api/buffer.md
+++ b/doc/api/buffer.md
@@ -959,7 +959,7 @@ Example: Copy an ASCII string into a `Buffer`, one byte at a time
 const str = 'Node.js';
 const buf = Buffer.allocUnsafe(str.length);
 
-for (let i = 0; i < str.length ; i++) {
+for (let i = 0; i < str.length; i++) {
   buf[i] = str.charCodeAt(i);
 }
 
@@ -1087,7 +1087,7 @@ byte 16 through byte 19 into `buf2`, starting at the 8th byte in `buf2`
 const buf1 = Buffer.allocUnsafe(26);
 const buf2 = Buffer.allocUnsafe(26).fill('!');
 
-for (let i = 0 ; i < 26 ; i++) {
+for (let i = 0; i < 26; i++) {
   // 97 is the decimal ASCII value for 'a'
   buf1[i] = i + 97;
 }
@@ -1104,7 +1104,7 @@ overlapping region within the same `Buffer`
 ```js
 const buf = Buffer.allocUnsafe(26);
 
-for (let i = 0 ; i < 26 ; i++) {
+for (let i = 0; i < 26; i++) {
   // 97 is the decimal ASCII value for 'a'
   buf[i] = i + 97;
 }
@@ -1871,7 +1871,7 @@ one byte from the original `Buffer`
 ```js
 const buf1 = Buffer.allocUnsafe(26);
 
-for (let i = 0 ; i < 26 ; i++) {
+for (let i = 0; i < 26; i++) {
   // 97 is the decimal ASCII value for 'a'
   buf1[i] = i + 97;
 }
@@ -2021,9 +2021,9 @@ const json = JSON.stringify(buf);
 console.log(json);
 
 const copy = JSON.parse(json, (key, value) => {
-  return value && value.type === 'Buffer'
-    ? Buffer.from(value.data)
-    : value;
+  return value && value.type === 'Buffer' ?
+    Buffer.from(value.data) :
+    value;
 });
 
 // Prints: <Buffer 01 02 03 04 05>
@@ -2049,7 +2049,7 @@ Examples:
 ```js
 const buf1 = Buffer.allocUnsafe(26);
 
-for (let i = 0 ; i < 26 ; i++) {
+for (let i = 0; i < 26; i++) {
   // 97 is the decimal ASCII value for 'a'
   buf1[i] = i + 97;
 }
diff --git a/doc/api/child_process.md b/doc/api/child_process.md
index d004147c77..80203c1b89 100644
--- a/doc/api/child_process.md
+++ b/doc/api/child_process.md
@@ -200,7 +200,7 @@ the process is spawned. The default options are:
 const defaults = {
   encoding: 'utf8',
   timeout: 0,
-  maxBuffer: 200*1024,
+  maxBuffer: 200 * 1024,
   killSignal: 'SIGTERM',
   cwd: null,
   env: null
@@ -933,13 +933,17 @@ as in this example:
 'use strict';
 const spawn = require('child_process').spawn;
 
-const child = spawn('sh', ['-c',
-  `node -e "setInterval(() => {
+const child = spawn(
+  'sh',
+  [
+    '-c',
+    `node -e "setInterval(() => {
       console.log(process.pid, 'is alive')
     }, 500);"`
   ], {
     stdio: ['inherit', 'inherit', 'inherit']
-  });
+  }
+);
 
 setTimeout(() => {
   child.kill(); // does not terminate the node process in the shell
diff --git a/doc/api/cluster.md b/doc/api/cluster.md
index 0774938766..069f9f2003 100644
--- a/doc/api/cluster.md
+++ b/doc/api/cluster.md
@@ -523,11 +523,14 @@ When any of the workers die the cluster module will emit the `'exit'` event.
 This can be used to restart the worker by calling `.fork()` again.
 
 ```js
-cluster.on('exit', (worker, code, signal) => {
-  console.log('worker %d died (%s). restarting...',
-    worker.process.pid, signal || code);
-  cluster.fork();
-});
+cluster.on(
+  'exit',
+  (worker, code, signal) => {
+    console.log('worker %d died (%s). restarting...',
+                worker.process.pid, signal || code);
+    cluster.fork();
+  }
+);
 ```
 
 See [child_process event: 'exit'][].
diff --git a/doc/api/console.md b/doc/api/console.md
index a368e17913..900a7aa9c1 100644
--- a/doc/api/console.md
+++ b/doc/api/console.md
@@ -142,7 +142,7 @@ the default behavior of `console` in Node.js.
 // new impl for assert without monkey-patching.
 const myConsole = Object.create(console, {
   assert: {
-    value: function assert(assertion, message, ...args) {
+    value(assertion, message, ...args) {
       try {
         console.assert(assertion, message, ...args);
       } catch (err) {
@@ -276,9 +276,7 @@ prints the result to `stdout`:
 
 ```js
 console.time('100-elements');
-for (let i = 0; i < 100; i++) {
-  ;
-}
+for (let i = 0; i < 100; i++) ;
 console.timeEnd('100-elements');
 // prints 100-elements: 225.438ms
 ```
diff --git a/doc/api/crypto.md b/doc/api/crypto.md
index 5e39d51fd6..6392491f3a 100644
--- a/doc/api/crypto.md
+++ b/doc/api/crypto.md
@@ -288,7 +288,8 @@ decipher.on('end', () => {
   // Prints: some clear text data
 });
 
-const encrypted = 'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
+const encrypted =
+  'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
 decipher.write(encrypted, 'hex');
 decipher.end();
 ```
@@ -312,7 +313,8 @@ Example: Using the [`decipher.update()`][] and [`decipher.final()`][] methods:
 const crypto = require('crypto');
 const decipher = crypto.createDecipher('aes192', 'a password');
 
-const encrypted = 'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
+const encrypted =
+  'ca981be48e90867604588e75d04feabb63cc007a8f8ad89b10616ed84d815504';
 let decrypted = decipher.update(encrypted, 'hex', 'utf8');
 decrypted += decipher.final('utf8');
 console.log(decrypted);
diff --git a/doc/api/domain.md b/doc/api/domain.md
index 00cb149bbd..eb04987f08 100644
--- a/doc/api/domain.md
+++ b/doc/api/domain.md
@@ -162,7 +162,7 @@ function handleRequest(req, res) {
       setTimeout(() => {
         // Whoops!
         flerb.bark();
-      });
+      }, timeout);
       break;
     default:
       res.end('ok');
diff --git a/doc/api/http.md b/doc/api/http.md
index e8a8770bb1..3cf80923dd 100644
--- a/doc/api/http.md
+++ b/doc/api/http.md
@@ -309,7 +309,7 @@ const net = require('net');
 const url = require('url');
 
 // Create an HTTP tunneling proxy
-const proxy = http.createServer( (req, res) => {
+const proxy = http.createServer((req, res) => {
   res.writeHead(200, {'Content-Type': 'text/plain'});
   res.end('okay');
 });
@@ -405,7 +405,7 @@ A client server pair demonstrating how to listen for the `'upgrade'` event.
 const http = require('http');
 
 // Create an HTTP server
-const srv = http.createServer( (req, res) => {
+const srv = http.createServer((req, res) => {
   res.writeHead(200, {'Content-Type': 'text/plain'});
   res.end('okay');
 });
@@ -1570,10 +1570,10 @@ http.get('http://nodejs.org/dist/index.json', (res) => {
 
   let error;
   if (statusCode !== 200) {
-    error = new Error(`Request Failed.\n` +
+    error = new Error('Request Failed.\n' +
                       `Status Code: ${statusCode}`);
   } else if (!/^application\/json/.test(contentType)) {
-    error = new Error(`Invalid content-type.\n` +
+    error = new Error('Invalid content-type.\n' +
                       `Expected application/json but received ${contentType}`);
   }
   if (error) {
diff --git a/doc/api/modules.md b/doc/api/modules.md
index d40f25d0a9..48a4d1f3cf 100644
--- a/doc/api/modules.md
+++ b/doc/api/modules.md
@@ -70,7 +70,7 @@ When a file is run directly from Node.js, `require.main` is set to its
 directly by testing
 
 ```js
-require.main === module
+require.main === module;
 ```
 
 For a file `foo.js`, this will be `true` if run via `node foo.js`, but
@@ -441,7 +441,7 @@ Before a module's code is executed, Node.js will wrap it with a function
 wrapper that looks like the following:
 
 ```js
-(function (exports, require, module, __filename, __dirname) {
+(function(exports, require, module, __filename, __dirname) {
 // Your module code actually lives in here
 });
 ```
diff --git a/doc/api/path.md b/doc/api/path.md
index a6f1701261..d9452b00db 100644
--- a/doc/api/path.md
+++ b/doc/api/path.md
@@ -74,10 +74,10 @@ the Unix `basename` command. Trailing directory separators are ignored, see
 For example:
 
 ```js
-path.basename('/foo/bar/baz/asdf/quux.html')
+path.basename('/foo/bar/baz/asdf/quux.html');
 // Returns: 'quux.html'
 
-path.basename('/foo/bar/baz/asdf/quux.html', '.html')
+path.basename('/foo/bar/baz/asdf/quux.html', '.html');
 // Returns: 'quux'
 ```
 
@@ -99,21 +99,21 @@ Provides the platform-specific path delimiter:
 For example, on POSIX:
 
 ```js
-console.log(process.env.PATH)
+console.log(process.env.PATH);
 // Prints: '/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin'
 
-process.env.PATH.split(path.delimiter)
+process.env.PATH.split(path.delimiter);
 // Returns: ['/usr/bin', '/bin', '/usr/sbin', '/sbin', '/usr/local/bin']
 ```
 
 On Windows:
 
 ```js
-console.log(process.env.PATH)
+console.log(process.env.PATH);
 // Prints: 'C:\Windows\system32;C:\Windows;C:\Program Files\node\'
 
-process.env.PATH.split(path.delimiter)
-// Returns: ['C:\\Windows\\system32', 'C:\\Windows', 'C:\\Program Files\\node\\']
+process.env.PATH.split(path.delimiter);
+// Returns ['C:\\Windows\\system32', 'C:\\Windows', 'C:\\Program Files\\node\\']
 ```
 
 ## path.dirname(path)
@@ -135,7 +135,7 @@ the Unix `dirname` command. Trailing directory separators are ignored, see
 For example:
 
 ```js
-path.dirname('/foo/bar/baz/asdf/quux')
+path.dirname('/foo/bar/baz/asdf/quux');
 // Returns: '/foo/bar/baz/asdf'
 ```
 
@@ -162,19 +162,19 @@ an empty string is returned.
 For example:
 
 ```js
-path.extname('index.html')
+path.extname('index.html');
 // Returns: '.html'
 
-path.extname('index.coffee.md')
+path.extname('index.coffee.md');
 // Returns: '.md'
 
-path.extname('index.')
+path.extname('index.');
 // Returns: '.'
 
-path.extname('index')
+path.extname('index');
 // Returns: ''
 
-path.extname('.index')
+path.extname('.index');
 // Returns: ''
 ```
 
@@ -259,22 +259,22 @@ If the given `path` is a zero-length string, `false` will be returned.
 For example on POSIX:
 
 ```js
-path.isAbsolute('/foo/bar') // true
-path.isAbsolute('/baz/..')  // true
-path.isAbsolute('qux/')     // false
-path.isAbsolute('.')        // false
+path.isAbsolute('/foo/bar'); // true
+path.isAbsolute('/baz/..');  // true
+path.isAbsolute('qux/');     // false
+path.isAbsolute('.');        // false
 ```
 
 On Windows:
 
 ```js
-path.isAbsolute('//server')    // true
-path.isAbsolute('\\\\server')  // true
-path.isAbsolute('C:/foo/..')   // true
-path.isAbsolute('C:\\foo\\..') // true
-path.isAbsolute('bar\\baz')    // false
-path.isAbsolute('bar/baz')     // false
-path.isAbsolute('.')           // false
+path.isAbsolute('//server');    // true
+path.isAbsolute('\\\\server');  // true
+path.isAbsolute('C:/foo/..');   // true
+path.isAbsolute('C:\\foo\\..'); // true
+path.isAbsolute('bar\\baz');    // false
+path.isAbsolute('bar/baz');     // false
+path.isAbsolute('.');           // false
 ```
 
 A [`TypeError`][] is thrown if `path` is not a string.
@@ -297,10 +297,10 @@ working directory.
 For example:
 
 ```js
-path.join('/foo', 'bar', 'baz/asdf', 'quux', '..')
+path.join('/foo', 'bar', 'baz/asdf', 'quux', '..');
 // Returns: '/foo/bar/baz/asdf'
 
-path.join('foo', {}, 'bar')
+path.join('foo', {}, 'bar');
 // throws 'TypeError: Path must be a string. Received {}'
 ```
 
@@ -327,14 +327,14 @@ current working directory.
 For example on POSIX:
 
 ```js
-path.normalize('/foo/bar//baz/asdf/quux/..')
+path.normalize('/foo/bar//baz/asdf/quux/..');
 // Returns: '/foo/bar/baz/asdf'
 ```
 
 On Windows:
 
 ```js
-path.normalize('C:\\temp\\\\foo\\bar\\..\\')
+path.normalize('C:\\temp\\\\foo\\bar\\..\\');
 // Returns: 'C:\\temp\\foo\\'
 ```
 
@@ -363,7 +363,7 @@ The returned object will have the following properties:
 For example on POSIX:
 
 ```js
-path.parse('/home/user/dir/file.txt')
+path.parse('/home/user/dir/file.txt');
 // Returns:
 // { root: '/',
 //   dir: '/home/user/dir',
@@ -385,7 +385,7 @@ path.parse('/home/user/dir/file.txt')
 On Windows:
 
 ```js
-path.parse('C:\\path\\dir\\file.txt')
+path.parse('C:\\path\\dir\\file.txt');
 // Returns:
 // { root: 'C:\\',
 //   dir: 'C:\\path\\dir',
@@ -440,14 +440,14 @@ directory will be used instead of the zero-length strings.
 For example on POSIX:
 
 ```js
-path.relative('/data/orandea/test/aaa', '/data/orandea/impl/bbb')
+path.relative('/data/orandea/test/aaa', '/data/orandea/impl/bbb');
 // Returns: '../../impl/bbb'
 ```
 
 On Windows:
 
 ```js
-path.relative('C:\\orandea\\test\\aaa', 'C:\\orandea\\impl\\bbb')
+path.relative('C:\\orandea\\test\\aaa', 'C:\\orandea\\impl\\bbb');
 // Returns: '..\\..\\impl\\bbb'
 ```
 
@@ -483,13 +483,13 @@ of the current working directory.
 For example:
 
 ```js
-path.resolve('/foo/bar', './baz')
+path.resolve('/foo/bar', './baz');
 // Returns: '/foo/bar/baz'
 
-path.resolve('/foo/bar', '/tmp/file/')
+path.resolve('/foo/bar', '/tmp/file/');
 // Returns: '/tmp/file'
 
-path.resolve('wwwroot', 'static_files/png/', '../gif/image.gif')
+path.resolve('wwwroot', 'static_files/png/', '../gif/image.gif');
 // if the current working directory is /home/myself/node,
 // this returns '/home/myself/node/wwwroot/static_files/gif/image.gif'
 ```
@@ -511,14 +511,14 @@ Provides the platform-specific path segment separator:
 For example on POSIX:
 
 ```js
-'foo/bar/baz'.split(path.sep)
+'foo/bar/baz'.split(path.sep);
 // Returns: ['foo', 'bar', 'baz']
 ```
 
 On Windows:
 
 ```js
-'foo\\bar\\baz'.split(path.sep)
+'foo\\bar\\baz'.split(path.sep);
 // Returns: ['foo', 'bar', 'baz']
 ```
 
diff --git a/doc/api/process.md b/doc/api/process.md
index 0e8b46d403..3f7c6d4e5a 100644
--- a/doc/api/process.md
+++ b/doc/api/process.md
@@ -509,8 +509,7 @@ console.log(`Starting directory: ${process.cwd()}`);
 try {
   process.chdir('/tmp');
   console.log(`New directory: ${process.cwd()}`);
-}
-catch (err) {
+} catch (err) {
   console.error(`chdir: ${err}`);
 }
 ```
@@ -1398,8 +1397,7 @@ if (process.getegid && process.setegid) {
   try {
     process.setegid(501);
     console.log(`New gid: ${process.getegid()}`);
-  }
-  catch (err) {
+  } catch (err) {
     console.log(`Failed to set gid: ${err}`);
   }
 }
@@ -1427,8 +1425,7 @@ if (process.geteuid && process.seteuid) {
   try {
     process.seteuid(501);
     console.log(`New uid: ${process.geteuid()}`);
-  }
-  catch (err) {
+  } catch (err) {
     console.log(`Failed to set uid: ${err}`);
   }
 }
@@ -1455,8 +1452,7 @@ if (process.getgid && process.setgid) {
   try {
     process.setgid(501);
     console.log(`New gid: ${process.getgid()}`);
-  }
-  catch (err) {
+  } catch (err) {
     console.log(`Failed to set gid: ${err}`);
   }
 }
@@ -1497,8 +1493,7 @@ if (process.getuid && process.setuid) {
   try {
     process.setuid(501);
     console.log(`New uid: ${process.getuid()}`);
-  }
-  catch (err) {
+  } catch (err) {
     console.log(`Failed to set uid: ${err}`);
   }
 }
diff --git a/doc/api/querystring.md b/doc/api/querystring.md
index 27778627eb..d82bf645e4 100644
--- a/doc/api/querystring.md
+++ b/doc/api/querystring.md
@@ -80,7 +80,7 @@ in the following example:
 // Assuming gbkDecodeURIComponent function already exists...
 
 querystring.parse('w=%D6%D0%CE%C4&foo=bar', null, null,
-  { decodeURIComponent: gbkDecodeURIComponent })
+  { decodeURIComponent: gbkDecodeURIComponent });
 ```
 
 ## querystring.stringify(obj[, sep[, eq[, options]]])
@@ -108,10 +108,10 @@ Any other input values will be coerced to empty strings.
 For example:
 
 ```js
-querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' })
+querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' });
 // returns 'foo=bar&baz=qux&baz=quux&corge='
 
-querystring.stringify({ foo: 'bar', baz: 'qux' }, ';', ':')
+querystring.stringify({ foo: 'bar', baz: 'qux' }, ';', ':');
 // returns 'foo:bar;baz:qux'
 ```
 
@@ -124,7 +124,7 @@ following example:
 // Assuming gbkEncodeURIComponent function already exists,
 
 querystring.stringify({ w: '中文', foo: 'bar' }, null, null,
-  { encodeURIComponent: gbkEncodeURIComponent })
+  { encodeURIComponent: gbkEncodeURIComponent });
 ```
 
 ## querystring.unescape(str)
diff --git a/doc/api/readline.md b/doc/api/readline.md
index acd052bb1a..b4c0df9f43 100644
--- a/doc/api/readline.md
+++ b/doc/api/readline.md
@@ -414,7 +414,7 @@ For instance: `[[substr1, substr2, ...], originalsubstring]`.
 ```js
 function completer(line) {
   const completions = '.help .error .exit .quit .q'.split(' ');
-  const hits = completions.filter((c) => { return c.indexOf(line) === 0 });
+  const hits = completions.filter((c) => { return c.indexOf(line) === 0; });
   // show all completions if none found
   return [hits.length ? hits : completions, line];
 }
@@ -492,7 +492,7 @@ const rl = readline.createInterface({
 rl.prompt();
 
 rl.on('line', (line) => {
-  switch(line.trim()) {
+  switch (line.trim()) {
     case 'hello':
       console.log('world!');
       break;
diff --git a/doc/api/stream.md b/doc/api/stream.md
index 29eb47cbe3..da6c51907a 100644
--- a/doc/api/stream.md
+++ b/doc/api/stream.md
@@ -112,7 +112,7 @@ that implements an HTTP server:
 ```js
 const http = require('http');
 
-const server = http.createServer( (req, res) => {
+const server = http.createServer((req, res) => {
   // req is an http.IncomingMessage, which is a Readable Stream
   // res is an http.ServerResponse, which is a Writable Stream
 
@@ -280,7 +280,7 @@ has been called, and all data has been flushed to the underlying system.
 
 ```js
 const writer = getWritableStreamSomehow();
-for (var i = 0; i < 100; i ++) {
+for (var i = 0; i < 100; i++) {
   writer.write(`hello, #${i}!\n`);
 }
 writer.end('This is the end\n');
@@ -483,18 +483,18 @@ possible to respect backpressure and avoid memory issues using the
 [`'drain'`][] event:
 
 ```js
-function write (data, cb) {
+function write(data, cb) {
   if (!stream.write(data)) {
-    stream.once('drain', cb)
+    stream.once('drain', cb);
   } else {
-    process.nextTick(cb)
+    process.nextTick(cb);
   }
 }
 
 // Wait for cb to be called before doing any other write.
 write('hello', () => {
-  console.log('write completed, do more writes now')
-})
+  console.log('write completed, do more writes now');
+});
 ```
 
 A Writable stream in object mode will always ignore the `encoding` argument.
@@ -749,13 +749,13 @@ Readable. This is used primarily by the mechanism that underlies the
 use this method directly.
 
 ```js
-const readable = new stream.Readable
+const readable = new stream.Readable();
 
-readable.isPaused() // === false
-readable.pause()
-readable.isPaused() // === true
-readable.resume()
-readable.isPaused() // === false
+readable.isPaused(); // === false
+readable.pause();
+readable.isPaused(); // === true
+readable.resume();
+readable.isPaused(); // === false
 ```
 
 ##### readable.pause()
@@ -1065,7 +1065,7 @@ For example:
 ```js
 const OldReader = require('./old-api-module.js').OldReader;
 const Readable = require('stream').Readable;
-const oreader = new OldReader;
+const oreader = new OldReader();
 const myReader = new Readable().wrap(oreader);
 
 myReader.on('readable', () => {
@@ -1906,12 +1906,12 @@ argument is passed to the `callback`, it will be forwarded on to the
 `readable.push()` method. In other words the following are equivalent:
 
 ```js
-transform.prototype._transform = function (data, encoding, callback) {
+transform.prototype._transform = function(data, encoding, callback) {
   this.push(data);
   callback();
 };
 
-transform.prototype._transform = function (data, encoding, callback) {
+transform.prototype._transform = function(data, encoding, callback) {
   callback(null, data);
 };
 ```
diff --git a/doc/api/url.md b/doc/api/url.md
index 14fcf267ce..7a0d56c01f 100644
--- a/doc/api/url.md
+++ b/doc/api/url.md
@@ -289,9 +289,9 @@ manner similar to that of a Web browser resolving an anchor tag HREF.
 For example:
 
 ```js
-url.resolve('/one/two/three', 'four')         // '/one/two/four'
-url.resolve('http://example.com/', '/one')    // 'http://example.com/one'
-url.resolve('http://example.com/one', '/two') // 'http://example.com/two'
+url.resolve('/one/two/three', 'four');         // '/one/two/four'
+url.resolve('http://example.com/', '/one');    // 'http://example.com/one'
+url.resolve('http://example.com/one', '/two'); // 'http://example.com/two'
 ```
 
 ## Escaped Characters
@@ -460,7 +460,7 @@ const myURL = new URL('https://example.org/foo');
 console.log(myURL.href);
   // Prints https://example.org/foo
 
-myURL.href = 'https://example.com/bar'
+myURL.href = 'https://example.com/bar';
   // Prints https://example.com/bar
 ```
 
diff --git a/doc/api/util.md b/doc/api/util.md
index 8dcc117938..612439bbea 100644
--- a/doc/api/util.md
+++ b/doc/api/util.md
@@ -328,7 +328,8 @@ class Box {
 
     // Five space padding because that's the size of "Box< ".
     const padding = ' '.repeat(5);
-    const inner = util.inspect(this.value, newOptions).replace(/\n/g, '\n' + padding);
+    const inner = util.inspect(this.value, newOptions)
+                      .replace(/\n/g, '\n' + padding);
     return options.stylize('Box', 'special') + '< ' + inner + ' >';
   }
 }
@@ -460,7 +461,7 @@ const util = require('util');
 
 util.isArray([]);
 // Returns: true
-util.isArray(new Array);
+util.isArray(new Array());
 // Returns: true
 util.isArray({});
 // Returns: false
@@ -696,7 +697,7 @@ util.isObject(null);
 // Returns: false
 util.isObject({});
 // Returns: true
-util.isObject(function(){});
+util.isObject(function() {});
 // Returns: false
 ```
 
diff --git a/doc/api/vm.md b/doc/api/vm.md
index b6fb90440a..60bde1d729 100644
--- a/doc/api/vm.md
+++ b/doc/api/vm.md
@@ -435,7 +435,7 @@ to the `http` module passed to it. For instance:
 'use strict';
 const vm = require('vm');
 
-let code =
+const code =
 `(function(require) {
 
    const http = require('http');
@@ -448,7 +448,7 @@ let code =
    console.log('Server running at http://127.0.0.1:8124/');
  })`;
 
- vm.runInThisContext(code)(require);
+vm.runInThisContext(code)(require);
  ```
 
 *Note*: The `require()` in the above case shares the state with the context it
diff --git a/doc/api/zlib.md b/doc/api/zlib.md
index 804324521a..73aa81ede9 100644
--- a/doc/api/zlib.md
+++ b/doc/api/zlib.md
@@ -65,9 +65,9 @@ const zlib = require('zlib');
 const http = require('http');
 const fs = require('fs');
 const request = http.get({ host: 'example.com',
-                         path: '/',
-                         port: 80,
-                         headers: { 'Accept-Encoding': 'gzip,deflate' } });
+                           path: '/',
+                           port: 80,
+                           headers: { 'Accept-Encoding': 'gzip,deflate' } });
 request.on('response', (response) => {
   var output = fs.createWriteStream('example.com_index.html');
 
@@ -125,15 +125,16 @@ method that is used to compressed the last chunk of input data:
 // This is a truncated version of the buffer from the above examples
 const buffer = Buffer.from('eJzT0yMA', 'base64');
 
-zlib.unzip(buffer,
-           {finishFlush: zlib.constants.Z_SYNC_FLUSH},
-           (err, buffer) => {
-  if (!err) {
-    console.log(buffer.toString());
-  } else {
-    // handle error
-  }
-});
+zlib.unzip(
+  buffer,
+  {finishFlush: zlib.constants.Z_SYNC_FLUSH},
+  (err, buffer) => {
+    if (!err) {
+      console.log(buffer.toString());
+    } else {
+      // handle error
+    }
+  });
 ```
 
 This will not change the behavior in other error-throwing situations, e.g.
@@ -151,7 +152,7 @@ From `zlib/zconf.h`, modified to node.js's usage:
 The memory requirements for deflate are (in bytes):
 
 ```js
-(1 << (windowBits+2)) +  (1 << (memLevel+9))
+(1 << (windowBits + 2)) + (1 << (memLevel + 9));
 ```
 
 That is: 128K for windowBits=15  +  128K for memLevel = 8
@@ -169,7 +170,7 @@ This will, however, generally degrade compression.
 The memory requirements for inflate are (in bytes)
 
 ```js
-1 << windowBits
+1 << windowBits;
 ```
 
 That is, 32K for windowBits=15 (default value) plus a few kilobytes