console: colorize console error and warn

prints console error in red and warn in yellow

Author: MrJithil

lib/internal/console/constructor.js

@@ -273,7 +273,7 @@ ObjectDefineProperties(Console.prototype, {
   [kWriteToConsole]: {
     __proto__: null,
     ...consolePropAttributes,
-    value: function(streamSymbol, string) {
+    value: function(streamSymbol, string, color) {
       const ignoreErrors = this._ignoreErrors;
       const groupIndent = this[kGroupIndent];
 
@@ -288,6 +288,11 @@ ObjectDefineProperties(Console.prototype, {
         }
         string = groupIndent + string;
       }
+
+      if (color && lazyUtilColors().hasColors) {
+        string = `${color}${string}`;
+      }
+
       string += '\n';
 
       if (ignoreErrors === false) return stream.write(string);
@@ -381,9 +386,12 @@ const consoleMethods = {
 
 
   warn(...args) {
-    this[kWriteToConsole](kUseStderr, this[kFormatForStderr](args));
+    this[kWriteToConsole](kUseStderr, this[kFormatForStderr](args), lazyUtilColors().yellow);
   },
 
+  error(...args) {
+    this[kWriteToConsole](kUseStderr, this[kFormatForStderr](args), lazyUtilColors().red);
+  },
 
   dir(object, options) {
     this[kWriteToConsole](kUseStdout, inspect(object, {
@@ -689,7 +697,6 @@ for (const method of ReflectOwnKeys(consoleMethods))
 Console.prototype.debug = Console.prototype.log;
 Console.prototype.info = Console.prototype.log;
 Console.prototype.dirxml = Console.prototype.log;
-Console.prototype.error = Console.prototype.warn;
 Console.prototype.groupCollapsed = Console.prototype.group;
 
 function initializeGlobalConsole(globalConsole) {

test/parallel/test-repl.js

@@ -770,6 +770,7 @@ const errorTests = [
       'Object [console] {',
       '  log: [Function: log],',
       '  warn: [Function: warn],',
+      '  error: [Function: error],',
       '  dir: [Function: dir],',
       '  time: [Function: time],',
       '  timeEnd: [Function: timeEnd],',
@@ -785,7 +786,6 @@ const errorTests = [
       / {2}debug: \[Function: (debug|log)],/,
       / {2}info: \[Function: (info|log)],/,
       / {2}dirxml: \[Function: (dirxml|log)],/,
-      / {2}error: \[Function: (error|warn)],/,
       / {2}groupCollapsed: \[Function: (groupCollapsed|group)],/,
       / {2}Console: \[Function: Console],?/,
       ...process.features.inspector ? [