Add javascript-repl

AUTHORS.txt

@@ -305,3 +305,4 @@ Contributors:
 - Jonathan Sharpe <mail@jonrshar.pe>
 - Michael Rush <michaelrush@gmail.com>
 - Florian Bezdeka <florian@bezdeka.de>
+- Marat Nagayev <nagaevmt@yandex.ru>

CHANGES.md

@@ -8,6 +8,7 @@ Parser:
 New Languages:
 
 - Added Chapel grammar to SUPPORTED_LANGUAGES (#2806) [Brad Chamberlain][]
+- enh(javascript) Added `javascript-repl` for Javascript NodeJS REPL sessions
 
 Language Improvements:
 

src/languages/javascript-repl.js

@@ -0,0 +1,30 @@
+/*
+Language: JavaScript REPL
+Requires: javascript.js
+Author: Marat Nagayev <nagaevmt@yandex.ru>
+Category: common
+*/
+
+export default function(hljs) {
+    return {
+      name: 'JavaScript REPL',
+      contains: [
+        {
+          className: 'meta',
+          starts: {
+            // a space separates the REPL prefix from the actual code
+            // this is purely for cleaner HTML output
+            end: / |$/,
+            starts: {
+              end: '$', subLanguage: 'javascript'
+            }
+          },
+          variants: [
+            { begin: /^>(?=[ ]|$)/ },
+            { begin: /^\.\.\.(?=[ ]|$)/ }
+          ]
+        },
+      ]
+    }
+  }
+

test/detect/javascript-repl/default.txt

@@ -0,0 +1,4 @@
+> a = "1"
+'1'
+> function b(){
+... return 1+2;

test/markup/javascript-repl/sample.expect.txt

@@ -0,0 +1,10 @@
+<span class="hljs-meta">&gt;</span> <span class="javascript"><span class="hljs-keyword">for</span>(<span class="hljs-keyword">let</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">5</span>;i++){</span>
+<span class="hljs-meta">...</span> <span class="javascript"><span class="hljs-built_in">console</span>.log(i);</span>
+<span class="hljs-meta">...</span> <span class="javascript">}</span>
+0
+1
+2
+3
+4
+undefined
+<span class="hljs-meta">&gt;</span> 

test/markup/javascript-repl/sample.txt

@@ -0,0 +1,10 @@
+> for(let i=0;i<5;i++){
+... console.log(i);
+... }
+0
+1
+2
+3
+4
+undefined
+>