tools: enable eslint strict key-spacing

PR-URL: https://github.com/nodejs/node/pull/18831
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matheus Marchini <matheus@sthima.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

.eslintrc.js

@@ -166,7 +166,7 @@ module.exports = {
       ObjectExpression: 'first',
       SwitchCase: 1,
     }],
-    'key-spacing': ['error', { mode: 'minimum' }],
+    'key-spacing': ['error', { mode: 'strict' }],
     'keyword-spacing': 'error',
     'linebreak-style': ['error', 'unix'],
     'max-len': ['error', {

benchmark/http/_chunky_http_client.js

@@ -5,8 +5,8 @@ const common = require('../common.js');
 const net = require('net');
 
 const bench = common.createBenchmark(main, {
-  len:  [1, 4, 8, 16, 32, 64, 128],
-  n:  [5, 50, 500, 2000],
+  len: [1, 4, 8, 16, 32, 64, 128],
+  n: [5, 50, 500, 2000],
   type: ['send'],
 });
 

test/parallel/test-eslint-require-buffer.js

@@ -36,14 +36,14 @@ ruleTester.run('require-buffer', rule, {
       output: useStrict + bufferModule + useBuffer,
     },
     {
-      code:  mockComment + useBuffer,
+      code: mockComment + useBuffer,
       errors: [{ message }],
-      output:  mockComment + bufferModule + useBuffer,
+      output: mockComment + bufferModule + useBuffer,
     },
     {
-      code:  mockComment + useStrict + useBuffer,
+      code: mockComment + useStrict + useBuffer,
       errors: [{ message }],
-      output:  mockComment + useStrict + bufferModule + useBuffer,
+      output: mockComment + useStrict + bufferModule + useBuffer,
     },
   ]
 });

test/parallel/test-https-agent-servername.js

@@ -10,7 +10,7 @@ const fixtures = require('../common/fixtures');
 const options = {
   key: fixtures.readKey('agent1-key.pem'),
   cert: fixtures.readKey('agent1-cert.pem'),
-  ca:  fixtures.readKey('ca1-cert.pem')
+  ca: fixtures.readKey('ca1-cert.pem')
 };