diff --git a/.eslintrc b/.eslintrc
index 14fbc039a0..790803cb1e 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -58,6 +58,7 @@ rules:
   comma-spacing: 2
   eol-last: 2
   indent: [2, 2, {SwitchCase: 1}]
+  key-spacing: [2, {mode: "minimum"}]
   keyword-spacing: 2
   max-len: [2, 80, 2]
   new-parens: 2
diff --git a/lib/_http_server.js b/lib/_http_server.js
index 117202fd3e..d0f0fbe5d5 100644
--- a/lib/_http_server.js
+++ b/lib/_http_server.js
@@ -15,68 +15,68 @@ const httpSocketSetup = common.httpSocketSetup;
 const OutgoingMessage = require('_http_outgoing').OutgoingMessage;
 
 const STATUS_CODES = exports.STATUS_CODES = {
-  100 : 'Continue',
-  101 : 'Switching Protocols',
-  102 : 'Processing',                 // RFC 2518, obsoleted by RFC 4918
-  200 : 'OK',
-  201 : 'Created',
-  202 : 'Accepted',
-  203 : 'Non-Authoritative Information',
-  204 : 'No Content',
-  205 : 'Reset Content',
-  206 : 'Partial Content',
-  207 : 'Multi-Status',               // RFC 4918
-  208 : 'Already Reported',
-  226 : 'IM Used',
-  300 : 'Multiple Choices',
-  301 : 'Moved Permanently',
-  302 : 'Found',
-  303 : 'See Other',
-  304 : 'Not Modified',
-  305 : 'Use Proxy',
-  307 : 'Temporary Redirect',
-  308 : 'Permanent Redirect',         // RFC 7238
-  400 : 'Bad Request',
-  401 : 'Unauthorized',
-  402 : 'Payment Required',
-  403 : 'Forbidden',
-  404 : 'Not Found',
-  405 : 'Method Not Allowed',
-  406 : 'Not Acceptable',
-  407 : 'Proxy Authentication Required',
-  408 : 'Request Timeout',
-  409 : 'Conflict',
-  410 : 'Gone',
-  411 : 'Length Required',
-  412 : 'Precondition Failed',
-  413 : 'Payload Too Large',
-  414 : 'URI Too Long',
-  415 : 'Unsupported Media Type',
-  416 : 'Range Not Satisfiable',
-  417 : 'Expectation Failed',
-  418 : 'I\'m a teapot',              // RFC 2324
-  421 : 'Misdirected Request',
-  422 : 'Unprocessable Entity',       // RFC 4918
-  423 : 'Locked',                     // RFC 4918
-  424 : 'Failed Dependency',          // RFC 4918
-  425 : 'Unordered Collection',       // RFC 4918
-  426 : 'Upgrade Required',           // RFC 2817
-  428 : 'Precondition Required',      // RFC 6585
-  429 : 'Too Many Requests',          // RFC 6585
-  431 : 'Request Header Fields Too Large', // RFC 6585
-  451 : 'Unavailable For Legal Reasons',
-  500 : 'Internal Server Error',
-  501 : 'Not Implemented',
-  502 : 'Bad Gateway',
-  503 : 'Service Unavailable',
-  504 : 'Gateway Timeout',
-  505 : 'HTTP Version Not Supported',
-  506 : 'Variant Also Negotiates',    // RFC 2295
-  507 : 'Insufficient Storage',       // RFC 4918
-  508 : 'Loop Detected',
-  509 : 'Bandwidth Limit Exceeded',
-  510 : 'Not Extended',               // RFC 2774
-  511 : 'Network Authentication Required' // RFC 6585
+  100: 'Continue',
+  101: 'Switching Protocols',
+  102: 'Processing',                 // RFC 2518, obsoleted by RFC 4918
+  200: 'OK',
+  201: 'Created',
+  202: 'Accepted',
+  203: 'Non-Authoritative Information',
+  204: 'No Content',
+  205: 'Reset Content',
+  206: 'Partial Content',
+  207: 'Multi-Status',               // RFC 4918
+  208: 'Already Reported',
+  226: 'IM Used',
+  300: 'Multiple Choices',
+  301: 'Moved Permanently',
+  302: 'Found',
+  303: 'See Other',
+  304: 'Not Modified',
+  305: 'Use Proxy',
+  307: 'Temporary Redirect',
+  308: 'Permanent Redirect',         // RFC 7238
+  400: 'Bad Request',
+  401: 'Unauthorized',
+  402: 'Payment Required',
+  403: 'Forbidden',
+  404: 'Not Found',
+  405: 'Method Not Allowed',
+  406: 'Not Acceptable',
+  407: 'Proxy Authentication Required',
+  408: 'Request Timeout',
+  409: 'Conflict',
+  410: 'Gone',
+  411: 'Length Required',
+  412: 'Precondition Failed',
+  413: 'Payload Too Large',
+  414: 'URI Too Long',
+  415: 'Unsupported Media Type',
+  416: 'Range Not Satisfiable',
+  417: 'Expectation Failed',
+  418: 'I\'m a teapot',              // RFC 2324
+  421: 'Misdirected Request',
+  422: 'Unprocessable Entity',       // RFC 4918
+  423: 'Locked',                     // RFC 4918
+  424: 'Failed Dependency',          // RFC 4918
+  425: 'Unordered Collection',       // RFC 4918
+  426: 'Upgrade Required',           // RFC 2817
+  428: 'Precondition Required',      // RFC 6585
+  429: 'Too Many Requests',          // RFC 6585
+  431: 'Request Header Fields Too Large', // RFC 6585
+  451: 'Unavailable For Legal Reasons',
+  500: 'Internal Server Error',
+  501: 'Not Implemented',
+  502: 'Bad Gateway',
+  503: 'Service Unavailable',
+  504: 'Gateway Timeout',
+  505: 'HTTP Version Not Supported',
+  506: 'Variant Also Negotiates',    // RFC 2295
+  507: 'Insufficient Storage',       // RFC 4918
+  508: 'Loop Detected',
+  509: 'Bandwidth Limit Exceeded',
+  510: 'Not Extended',               // RFC 2774
+  511: 'Network Authentication Required' // RFC 6585
 };
 
 const kOnExecute = HTTPParser.kOnExecute | 0;
diff --git a/lib/util.js b/lib/util.js
index aa592eb41f..7601bf791f 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -151,19 +151,19 @@ exports.inspect = inspect;
 
 // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
 inspect.colors = {
-  'bold' : [1, 22],
-  'italic' : [3, 23],
-  'underline' : [4, 24],
-  'inverse' : [7, 27],
-  'white' : [37, 39],
-  'grey' : [90, 39],
-  'black' : [30, 39],
-  'blue' : [34, 39],
-  'cyan' : [36, 39],
-  'green' : [32, 39],
-  'magenta' : [35, 39],
-  'red' : [31, 39],
-  'yellow' : [33, 39]
+  'bold': [1, 22],
+  'italic': [3, 23],
+  'underline': [4, 24],
+  'inverse': [7, 27],
+  'white': [37, 39],
+  'grey': [90, 39],
+  'black': [30, 39],
+  'blue': [34, 39],
+  'cyan': [36, 39],
+  'green': [32, 39],
+  'magenta': [35, 39],
+  'red': [31, 39],
+  'yellow': [33, 39]
 };
 
 // Don't use 'blue' not visible on cmd.exe
diff --git a/test/doctool/test-doctool-json.js b/test/doctool/test-doctool-json.js
index f57fcd9475..79cf4ce3c3 100644
--- a/test/doctool/test-doctool-json.js
+++ b/test/doctool/test-doctool-json.js
@@ -17,7 +17,7 @@ var testData = [
       'source': 'foo',
       'modules': [ { 'textRaw': 'Sample Markdown',
         'name': 'sample_markdown',
-        'modules': [ { 'textRaw':'Seussian Rhymes',
+        'modules': [ { 'textRaw': 'Seussian Rhymes',
           'name': 'seussian_rhymes',
           'desc': '<ol>\n<li>fish</li>\n<li><p>fish</p>\n</li>\n<li>' +
                   '<p>Red fish</p>\n</li>\n<li>Blue fish</li>\n</ol>\n',
@@ -32,7 +32,7 @@ var testData = [
   {
     'file': common.fixturesDir + '/order_of_end_tags_5873.md',
     'json': {
-      'source':'foo',
+      'source': 'foo',
       'modules': [ {
         'textRaw': 'Title',
         'name': 'title',
@@ -41,8 +41,8 @@ var testData = [
           'name': 'subsection',
           'classMethods': [ {
             'textRaw': 'Class Method: Buffer.from(array)',
-            'type':'classMethod',
-            'name':'from',
+            'type': 'classMethod',
+            'name': 'from',
             'signatures': [ {
               'params': [ {
                 'textRaw': '`array` {Array} ',
@@ -51,7 +51,7 @@ var testData = [
               } ]
             },
               {
-                'params' : [ {
+                'params': [ {
                   'name': 'array'
                 } ]
               }
diff --git a/test/parallel/test-console.js b/test/parallel/test-console.js
index bacf0c1afb..7fe637aa96 100644
--- a/test/parallel/test-console.js
+++ b/test/parallel/test-console.js
@@ -41,8 +41,8 @@ console.log(custom_inspect);
 // test console.dir()
 console.dir(custom_inspect);
 console.dir(custom_inspect, { showHidden: false });
-console.dir({ foo : { bar : { baz : true } } }, { depth: 0 });
-console.dir({ foo : { bar : { baz : true } } }, { depth: 1 });
+console.dir({ foo: { bar: { baz: true } } }, { depth: 0 });
+console.dir({ foo: { bar: { baz: true } } }, { depth: 1 });
 
 // test console.trace()
 console.trace('This is a %j %d', { formatted: 'trace' }, 10, 'foo');
diff --git a/test/parallel/test-crypto-binary-default.js b/test/parallel/test-crypto-binary-default.js
index 921f236e90..7245f24079 100644
--- a/test/parallel/test-crypto-binary-default.js
+++ b/test/parallel/test-crypto-binary-default.js
@@ -30,19 +30,19 @@ var rsaKeyPem = fs.readFileSync(common.fixturesDir + '/test_rsa_privkey.pem',
 
 // PFX tests
 assert.doesNotThrow(function() {
-  tls.createSecureContext({pfx:certPfx, passphrase:'sample'});
+  tls.createSecureContext({pfx: certPfx, passphrase: 'sample'});
 });
 
 assert.throws(function() {
-  tls.createSecureContext({pfx:certPfx});
+  tls.createSecureContext({pfx: certPfx});
 }, 'mac verify failure');
 
 assert.throws(function() {
-  tls.createSecureContext({pfx:certPfx, passphrase:'test'});
+  tls.createSecureContext({pfx: certPfx, passphrase: 'test'});
 }, 'mac verify failure');
 
 assert.throws(function() {
-  tls.createSecureContext({pfx:'sample', passphrase:'test'});
+  tls.createSecureContext({pfx: 'sample', passphrase: 'test'});
 }, 'not enough data');
 
 // Test HMAC
diff --git a/test/parallel/test-crypto.js b/test/parallel/test-crypto.js
index f0e9242c0e..7941484dcd 100644
--- a/test/parallel/test-crypto.js
+++ b/test/parallel/test-crypto.js
@@ -32,19 +32,19 @@ assert.throws(function() {
 
 // PFX tests
 assert.doesNotThrow(function() {
-  tls.createSecureContext({pfx:certPfx, passphrase:'sample'});
+  tls.createSecureContext({pfx: certPfx, passphrase: 'sample'});
 });
 
 assert.throws(function() {
-  tls.createSecureContext({pfx:certPfx});
+  tls.createSecureContext({pfx: certPfx});
 }, 'mac verify failure');
 
 assert.throws(function() {
-  tls.createSecureContext({pfx:certPfx, passphrase:'test'});
+  tls.createSecureContext({pfx: certPfx, passphrase: 'test'});
 }, 'mac verify failure');
 
 assert.throws(function() {
-  tls.createSecureContext({pfx:'sample', passphrase:'test'});
+  tls.createSecureContext({pfx: 'sample', passphrase: 'test'});
 }, 'not enough data');
 
 
diff --git a/test/parallel/test-domain-http-server.js b/test/parallel/test-domain-http-server.js
index 37dbc30f42..594c34aae8 100644
--- a/test/parallel/test-domain-http-server.js
+++ b/test/parallel/test-domain-http-server.js
@@ -20,7 +20,7 @@ var server = http.createServer(function(req, res) {
     serverCaught++;
     console.log('horray! got a server error', er);
     // try to send a 500.  If that fails, oh well.
-    res.writeHead(500, {'content-type':'text/plain'});
+    res.writeHead(500, {'content-type': 'text/plain'});
     res.end(er.stack || er.message || 'Unknown error');
   });
 
diff --git a/test/parallel/test-domain-top-level-error-handler-throw.js b/test/parallel/test-domain-top-level-error-handler-throw.js
index 4bde30d17c..7933c5d052 100644
--- a/test/parallel/test-domain-top-level-error-handler-throw.js
+++ b/test/parallel/test-domain-top-level-error-handler-throw.js
@@ -29,7 +29,7 @@ if (process.argv[2] === 'child') {
   var fork = require('child_process').fork;
   var assert = require('assert');
 
-  var child = fork(process.argv[1], ['child'], {silent:true});
+  var child = fork(process.argv[1], ['child'], {silent: true});
   var stderrOutput = '';
   if (child) {
     child.stderr.on('data', function onStderrData(data) {
diff --git a/test/parallel/test-http-chunk-problem.js b/test/parallel/test-http-chunk-problem.js
index 6a5710e38e..0342a9501c 100644
--- a/test/parallel/test-http-chunk-problem.js
+++ b/test/parallel/test-http-chunk-problem.js
@@ -11,7 +11,7 @@ if (process.argv[2] === 'request') {
   const http = require('http');
   const options = {
     port: common.PORT,
-    path : '/'
+    path: '/'
   };
 
   http.get(options, (res) => {
diff --git a/test/parallel/test-http-client-pipe-end.js b/test/parallel/test-http-client-pipe-end.js
index 715f8ccf79..5b2db49435 100644
--- a/test/parallel/test-http-client-pipe-end.js
+++ b/test/parallel/test-http-client-pipe-end.js
@@ -18,7 +18,7 @@ common.refreshTmpDir();
 server.listen(common.PIPE, function() {
   var req = http.request({
     socketPath: common.PIPE,
-    headers: {'Content-Length':'1'},
+    headers: {'Content-Length': '1'},
     method: 'POST',
     path: '/'
   });
diff --git a/test/parallel/test-http-client-reject-chunked-with-content-length.js b/test/parallel/test-http-client-reject-chunked-with-content-length.js
index a6639c9069..400a1d0ddb 100644
--- a/test/parallel/test-http-client-reject-chunked-with-content-length.js
+++ b/test/parallel/test-http-client-reject-chunked-with-content-length.js
@@ -17,7 +17,7 @@ server.listen(common.PORT, () => {
   // The callback should not be called because the server is sending
   // both a Content-Length header and a Transfer-Encoding: chunked
   // header, which is a violation of the HTTP spec.
-  const req = http.get({port:common.PORT}, (res) => {
+  const req = http.get({port: common.PORT}, (res) => {
     assert.fail(null, null, 'callback should not be called');
   });
   req.on('error', common.mustCall((err) => {
diff --git a/test/parallel/test-http-client-reject-cr-no-lf.js b/test/parallel/test-http-client-reject-cr-no-lf.js
index b60220cbb6..350d7f40e9 100644
--- a/test/parallel/test-http-client-reject-cr-no-lf.js
+++ b/test/parallel/test-http-client-reject-cr-no-lf.js
@@ -16,7 +16,7 @@ const server = net.createServer((socket) => {
 server.listen(common.PORT, () => {
   // The callback should not be called because the server is sending a
   // header field that ends only in \r with no following \n
-  const req = http.get({port:common.PORT}, (res) => {
+  const req = http.get({port: common.PORT}, (res) => {
     assert.fail(null, null, 'callback should not be called');
   });
   req.on('error', common.mustCall((err) => {
diff --git a/test/parallel/test-http-client-response-domain.js b/test/parallel/test-http-client-response-domain.js
index 59b9514486..3034b1087e 100644
--- a/test/parallel/test-http-client-response-domain.js
+++ b/test/parallel/test-http-client-response-domain.js
@@ -34,7 +34,7 @@ function test() {
 
   var req = http.get({
     socketPath: common.PIPE,
-    headers: {'Content-Length':'1'},
+    headers: {'Content-Length': '1'},
     method: 'POST',
     path: '/'
   });
diff --git a/test/parallel/test-http-client-timeout-with-data.js b/test/parallel/test-http-client-timeout-with-data.js
index 673908fe6d..2fff91227d 100644
--- a/test/parallel/test-http-client-timeout-with-data.js
+++ b/test/parallel/test-http-client-timeout-with-data.js
@@ -19,7 +19,7 @@ const options = {
 };
 
 const server = http.createServer(function(req, res) {
-  res.writeHead(200, {'Content-Length':'2'});
+  res.writeHead(200, {'Content-Length': '2'});
   res.write('*');
   setTimeout(function() { res.end('*'); }, common.platformTimeout(100));
 });
diff --git a/test/parallel/test-http-expect-continue.js b/test/parallel/test-http-expect-continue.js
index 84c7d473ef..247346a9ec 100644
--- a/test/parallel/test-http-expect-continue.js
+++ b/test/parallel/test-http-expect-continue.js
@@ -13,8 +13,8 @@ function handler(req, res) {
   assert.equal(sent_continue, true, 'Full response sent before 100 Continue');
   console.error('Server sending full response...');
   res.writeHead(200, {
-    'Content-Type' : 'text/plain',
-    'ABCD' : '1'
+    'Content-Type': 'text/plain',
+    'ABCD': '1'
   });
   res.end(test_res_body);
 }
diff --git a/test/parallel/test-http-remove-header-stays-removed.js b/test/parallel/test-http-remove-header-stays-removed.js
index 844814bf03..20390ffb20 100644
--- a/test/parallel/test-http-remove-header-stays-removed.js
+++ b/test/parallel/test-http-remove-header-stays-removed.js
@@ -30,7 +30,7 @@ process.on('exit', function() {
 server.listen(common.PORT, function() {
   http.get({ port: common.PORT }, function(res) {
     assert.equal(200, res.statusCode);
-    assert.deepStrictEqual(res.headers, { date : 'coffee o clock' });
+    assert.deepStrictEqual(res.headers, { date: 'coffee o clock' });
 
     res.setEncoding('ascii');
     res.on('data', function(chunk) {
diff --git a/test/parallel/test-http-response-multi-content-length.js b/test/parallel/test-http-response-multi-content-length.js
index 4b0f2c11e3..8c03332fb2 100644
--- a/test/parallel/test-http-response-multi-content-length.js
+++ b/test/parallel/test-http-response-multi-content-length.js
@@ -33,7 +33,7 @@ server.listen(common.PORT, common.mustCall(() => {
     // case, the error handler must be called because the client
     // is not allowed to accept multiple content-length headers.
     http.get(
-      {port:common.PORT, headers:{'x-num': n}},
+      {port: common.PORT, headers: {'x-num': n}},
       (res) => {
         assert(false, 'client allowed multiple content-length headers.');
       }
diff --git a/test/parallel/test-http-response-multiheaders.js b/test/parallel/test-http-response-multiheaders.js
index 46265053ad..3b268f2784 100644
--- a/test/parallel/test-http-response-multiheaders.js
+++ b/test/parallel/test-http-response-multiheaders.js
@@ -56,7 +56,7 @@ server.listen(common.PORT, common.mustCall(function() {
     // value should be reported for the header fields listed
     // in the norepeat array.
     http.get(
-      {port:common.PORT, headers:{'x-num': n}},
+      {port: common.PORT, headers: {'x-num': n}},
       common.mustCall(function(res) {
         if (++count === 2) server.close();
         for (const name of norepeat) {
diff --git a/test/parallel/test-http-response-splitting.js b/test/parallel/test-http-response-splitting.js
index 4c954bf90a..3675f8182d 100644
--- a/test/parallel/test-http-response-splitting.js
+++ b/test/parallel/test-http-response-splitting.js
@@ -29,12 +29,12 @@ const server = http.createServer((req, res) => {
       break;
     case 1:
       assert.throws(common.mustCall(() => {
-        res.writeHead(200, {'foo' : x});
+        res.writeHead(200, {'foo': x});
       }));
       break;
     case 2:
       assert.throws(common.mustCall(() => {
-        res.writeHead(200, {'foo' : y});
+        res.writeHead(200, {'foo': y});
       }));
       break;
     default:
diff --git a/test/parallel/test-http-server-multiheaders.js b/test/parallel/test-http-server-multiheaders.js
index 99d7298847..132f3fc1ea 100644
--- a/test/parallel/test-http-server-multiheaders.js
+++ b/test/parallel/test-http-server-multiheaders.js
@@ -18,7 +18,7 @@ var srv = http.createServer(function(req, res) {
   assert.equal(req.headers['sec-websocket-extensions'], 'foo; 1, bar; 2, baz');
   assert.equal(req.headers['constructor'], 'foo, bar, baz');
 
-  res.writeHead(200, {'Content-Type' : 'text/plain'});
+  res.writeHead(200, {'Content-Type': 'text/plain'});
   res.end('EOF');
 
   srv.close();
diff --git a/test/parallel/test-http-server-multiheaders2.js b/test/parallel/test-http-server-multiheaders2.js
index bf54af3465..80cc3416d6 100644
--- a/test/parallel/test-http-server-multiheaders2.js
+++ b/test/parallel/test-http-server-multiheaders2.js
@@ -58,7 +58,7 @@ var srv = http.createServer(function(req, res) {
                  'foo, bar', 'header parsed incorrectly: ' + header);
   });
 
-  res.writeHead(200, {'Content-Type' : 'text/plain'});
+  res.writeHead(200, {'Content-Type': 'text/plain'});
   res.end('EOF');
 
   srv.close();
diff --git a/test/parallel/test-http-server-reject-cr-no-lf.js b/test/parallel/test-http-server-reject-cr-no-lf.js
index fbb89f0ff3..9245dc2de5 100644
--- a/test/parallel/test-http-server-reject-cr-no-lf.js
+++ b/test/parallel/test-http-server-reject-cr-no-lf.js
@@ -20,7 +20,7 @@ server.on('clientError', common.mustCall((err) => {
   server.close();
 }));
 server.listen(common.PORT, () => {
-  const client = net.connect({port:common.PORT}, () => {
+  const client = net.connect({port: common.PORT}, () => {
     client.on('data', (chunk) => {
       assert.fail(null, null, 'this should not be called');
     });
diff --git a/test/parallel/test-listen-fd-ebadf.js b/test/parallel/test-listen-fd-ebadf.js
index 51e09a7907..452eb7e140 100644
--- a/test/parallel/test-listen-fd-ebadf.js
+++ b/test/parallel/test-listen-fd-ebadf.js
@@ -9,8 +9,8 @@ process.on('exit', function() {
   assert.equal(gotError, 2);
 });
 
-net.createServer(common.fail).listen({fd:2}).on('error', onError);
-net.createServer(common.fail).listen({fd:42}).on('error', onError);
+net.createServer(common.fail).listen({fd: 2}).on('error', onError);
+net.createServer(common.fail).listen({fd: 42}).on('error', onError);
 
 function onError(ex) {
   assert.equal(ex.code, 'EINVAL');
diff --git a/test/parallel/test-net-listen-fd0.js b/test/parallel/test-net-listen-fd0.js
index 1a6c4716eb..b484c6306f 100644
--- a/test/parallel/test-net-listen-fd0.js
+++ b/test/parallel/test-net-listen-fd0.js
@@ -10,7 +10,7 @@ process.on('exit', function() {
 });
 
 // this should fail with an async EINVAL error, not throw an exception
-net.createServer(common.fail).listen({fd:0}).on('error', function(e) {
+net.createServer(common.fail).listen({fd: 0}).on('error', function(e) {
   switch (e.code) {
     case 'EINVAL':
     case 'ENOTSOCK':
diff --git a/test/parallel/test-stream-transform-split-objectmode.js b/test/parallel/test-stream-transform-split-objectmode.js
index 9636230224..9db2fa51d8 100644
--- a/test/parallel/test-stream-transform-split-objectmode.js
+++ b/test/parallel/test-stream-transform-split-objectmode.js
@@ -4,7 +4,7 @@ var assert = require('assert');
 
 var Transform = require('stream').Transform;
 
-var parser = new Transform({ readableObjectMode : true });
+var parser = new Transform({ readableObjectMode: true });
 
 assert(parser._readableState.objectMode);
 assert(!parser._writableState.objectMode);
@@ -12,7 +12,7 @@ assert(parser._readableState.highWaterMark === 16);
 assert(parser._writableState.highWaterMark === (16 * 1024));
 
 parser._transform = function(chunk, enc, callback) {
-  callback(null, { val : chunk[0] });
+  callback(null, { val: chunk[0] });
 };
 
 var parsed;
@@ -28,7 +28,7 @@ process.on('exit', function() {
 });
 
 
-var serializer = new Transform({ writableObjectMode : true });
+var serializer = new Transform({ writableObjectMode: true });
 
 assert(!serializer._readableState.objectMode);
 assert(serializer._writableState.objectMode);
@@ -45,7 +45,7 @@ serializer.on('data', function(chunk) {
   serialized = chunk;
 });
 
-serializer.write({ val : 42 });
+serializer.write({ val: 42 });
 
 process.on('exit', function() {
   assert(serialized[0] === 42);
diff --git a/test/parallel/test-stream2-transform.js b/test/parallel/test-stream2-transform.js
index c52d09e9f6..e25cdc8e49 100644
--- a/test/parallel/test-stream2-transform.js
+++ b/test/parallel/test-stream2-transform.js
@@ -267,7 +267,7 @@ test('assymetric transform (compress)', function(t) {
 test('complex transform', function(t) {
   var count = 0;
   var saved = null;
-  var pt = new Transform({highWaterMark:3});
+  var pt = new Transform({highWaterMark: 3});
   pt._transform = function(c, e, cb) {
     if (count++ === 1)
       saved = c;
diff --git a/test/parallel/test-tls-alert.js b/test/parallel/test-tls-alert.js
index 4eedeaa785..d25f819d44 100644
--- a/test/parallel/test-tls-alert.js
+++ b/test/parallel/test-tls-alert.js
@@ -29,7 +29,7 @@ function loadPEM(n) {
 var server = tls.Server({
   secureProtocol: 'TLSv1_2_server_method',
   key: loadPEM('agent2-key'),
-  cert:loadPEM('agent2-cert')
+  cert: loadPEM('agent2-cert')
 }, null).listen(common.PORT, function() {
   var args = ['s_client', '-quiet', '-tls1_1',
               '-connect', '127.0.0.1:' + common.PORT];
diff --git a/test/parallel/test-tls-alpn-server-client.js b/test/parallel/test-tls-alpn-server-client.js
index 498db9b3c0..b0ce0dbcd4 100644
--- a/test/parallel/test-tls-alpn-server-client.js
+++ b/test/parallel/test-tls-alpn-server-client.js
@@ -284,7 +284,7 @@ function Test7() {
                               client: {ALPN: false, NPN: false}});
     // nothing is selected by ALPN
     checkResults(results[2],
-                 {server: {ALPN: false, NPN:  'first-priority-unsupported'},
+                 {server: {ALPN: false, NPN: 'first-priority-unsupported'},
                   client: {ALPN: false, NPN: false}});
     // execute next test
     Test8();
@@ -308,7 +308,7 @@ function Test8() {
                               client: {ALPN: false, NPN: false}});
     // nothing is selected by ALPN
     checkResults(results[2],
-                 {server: {ALPN: false, NPN:  'http/1.1'},
+                 {server: {ALPN: false, NPN: 'http/1.1'},
                   client: {ALPN: false, NPN: false}});
     // execute next test
     Test9();
diff --git a/test/parallel/test-url.js b/test/parallel/test-url.js
index 40e281038c..c5933b9c67 100644
--- a/test/parallel/test-url.js
+++ b/test/parallel/test-url.js
@@ -822,7 +822,7 @@ var parseTests = {
     query: '@c'
   },
 
-  'http://a\r" \t\n<\'b:b@c\r\nd/e?f':{
+  'http://a\r" \t\n<\'b:b@c\r\nd/e?f': {
     protocol: 'http:',
     slashes: true,
     auth: 'a\r" \t\n<\'b:b',
@@ -1129,7 +1129,7 @@ var formatTests = {
 
   // `#`,`?` in path
   '/path/to/%%23%3F+=&.txt?foo=theA1#bar': {
-    href : '/path/to/%%23%3F+=&.txt?foo=theA1#bar',
+    href: '/path/to/%%23%3F+=&.txt?foo=theA1#bar',
     pathname: '/path/to/%#?+=&.txt',
     query: {
       foo: 'theA1'
@@ -1139,7 +1139,7 @@ var formatTests = {
 
   // `#`,`?` in path + `#` in query
   '/path/to/%%23%3F+=&.txt?foo=the%231#bar': {
-    href : '/path/to/%%23%3F+=&.txt?foo=the%231#bar',
+    href: '/path/to/%%23%3F+=&.txt?foo=the%231#bar',
     pathname: '/path/to/%#?+=&.txt',
     query: {
       foo: 'the#1'
diff --git a/test/parallel/test-util.js b/test/parallel/test-util.js
index 453148bc65..09ce08331a 100644
--- a/test/parallel/test-util.js
+++ b/test/parallel/test-util.js
@@ -76,10 +76,10 @@ assert.equal(false, util.isBuffer('foo'));
 assert.equal(true, util.isBuffer(Buffer.from('foo')));
 
 // _extend
-assert.deepStrictEqual(util._extend({a:1}),             {a:1});
-assert.deepStrictEqual(util._extend({a:1}, []),         {a:1});
-assert.deepStrictEqual(util._extend({a:1}, null),       {a:1});
-assert.deepStrictEqual(util._extend({a:1}, true),       {a:1});
-assert.deepStrictEqual(util._extend({a:1}, false),      {a:1});
-assert.deepStrictEqual(util._extend({a:1}, {b:2}),      {a:1, b:2});
-assert.deepStrictEqual(util._extend({a:1, b:2}, {b:3}), {a:1, b:3});
+assert.deepStrictEqual(util._extend({a: 1}), {a: 1});
+assert.deepStrictEqual(util._extend({a: 1}, []), {a: 1});
+assert.deepStrictEqual(util._extend({a: 1}, null), {a: 1});
+assert.deepStrictEqual(util._extend({a: 1}, true), {a: 1});
+assert.deepStrictEqual(util._extend({a: 1}, false), {a: 1});
+assert.deepStrictEqual(util._extend({a: 1}, {b: 2}), {a: 1, b: 2});
+assert.deepStrictEqual(util._extend({a: 1, b: 2}, {b: 3}), {a: 1, b: 3});
diff --git a/test/parallel/test-vm-context.js b/test/parallel/test-vm-context.js
index 3fe3cf1b66..48bceb1459 100644
--- a/test/parallel/test-vm-context.js
+++ b/test/parallel/test-vm-context.js
@@ -52,7 +52,7 @@ console.error('test RegExp as argument to assert.throws');
 script = vm.createScript('var assert = require(\'assert\'); assert.throws(' +
                          'function() { throw "hello world"; }, /hello/);',
                          'some.js');
-script.runInNewContext({ require : require });
+script.runInNewContext({ require: require });
 
 // Issue GH-7529
 script = vm.createScript('delete b');
diff --git a/test/pummel/test-crypto-dh.js b/test/pummel/test-crypto-dh.js
index cabde6e16d..a2d41a5fa7 100644
--- a/test/pummel/test-crypto-dh.js
+++ b/test/pummel/test-crypto-dh.js
@@ -19,14 +19,14 @@ assert.throws(function() {
 });
 
 var hashes = {
-  modp1 : '630e9acd2cc63f7e80d8507624ba60ac0757201a',
-  modp2 : '18f7aa964484137f57bca64b21917a385b6a0b60',
-  modp5 : 'c0a8eec0c2c8a5ec2f9c26f9661eb339a010ec61',
-  modp14 : 'af5455606fe74cec49782bb374e4c63c9b1d132c',
-  modp15 : '7bdd39e5cdbb9748113933e5c2623b559c534e74',
-  modp16 : 'daea5277a7ad0116e734a8e0d2f297ef759d1161',
-  modp17 : '3b62aaf0142c2720f0bf26a9589b0432c00eadc1',
-  modp18 : 'a870b491bbbec9b131ae9878d07449d32e54f160'
+  modp1: '630e9acd2cc63f7e80d8507624ba60ac0757201a',
+  modp2: '18f7aa964484137f57bca64b21917a385b6a0b60',
+  modp5: 'c0a8eec0c2c8a5ec2f9c26f9661eb339a010ec61',
+  modp14: 'af5455606fe74cec49782bb374e4c63c9b1d132c',
+  modp15: '7bdd39e5cdbb9748113933e5c2623b559c534e74',
+  modp16: 'daea5277a7ad0116e734a8e0d2f297ef759d1161',
+  modp17: '3b62aaf0142c2720f0bf26a9589b0432c00eadc1',
+  modp18: 'a870b491bbbec9b131ae9878d07449d32e54f160'
 };
 
 for (const name in hashes) {
diff --git a/test/pummel/test-fs-watch-file-slow.js b/test/pummel/test-fs-watch-file-slow.js
index c21785f233..cb3bc5e579 100644
--- a/test/pummel/test-fs-watch-file-slow.js
+++ b/test/pummel/test-fs-watch-file-slow.js
@@ -16,7 +16,7 @@ catch (e) {
   // swallow
 }
 
-fs.watchFile(FILENAME, {interval:TIMEOUT - 250}, function(curr, prev) {
+fs.watchFile(FILENAME, {interval: TIMEOUT - 250}, function(curr, prev) {
   console.log([curr, prev]);
   switch (++nevents) {
     case 1:
diff --git a/test/sequential/test-fs-watch.js b/test/sequential/test-fs-watch.js
index 51d737ddbe..249164c7e4 100644
--- a/test/sequential/test-fs-watch.js
+++ b/test/sequential/test-fs-watch.js
@@ -119,7 +119,7 @@ assert.throws(function() {
 oldhandle.close(); // clean up
 
 assert.throws(function() {
-  var w = fs.watchFile(__filename, {persistent:false}, function() {});
+  var w = fs.watchFile(__filename, {persistent: false}, function() {});
   oldhandle = w._handle;
   w._handle = { stop: w._handle.stop };
   w.stop();
diff --git a/tools/doc/html.js b/tools/doc/html.js
index 27e9bee17b..5f349abe71 100644
--- a/tools/doc/html.js
+++ b/tools/doc/html.js
@@ -152,7 +152,7 @@ function parseLists(input) {
       if (tok.type === 'list_start') {
         state = 'LIST';
         if (depth === 0) {
-          output.push({ type:'html', text: '<div class="signature">' });
+          output.push({ type: 'html', text: '<div class="signature">' });
         }
         depth++;
         output.push(tok);
@@ -176,7 +176,7 @@ function parseLists(input) {
         output.push(tok);
         if (depth === 0) {
           state = null;
-          output.push({ type:'html', text: '</div>' });
+          output.push({ type: 'html', text: '</div>' });
         }
         return;
       }