grammars/source.js.json in github-linguist-grammars-4.6.0 vs grammars/source.js.json in github-linguist-grammars-4.6.3

@@ -443,10 +443,43 @@
           "include": "#function-params"
         }
       ]
     },
     {
+      "comment": "match stuff like: Sound.play = (a,b) => { … }",
+      "name": "meta.function.arrow.js",
+      "begin": "([a-zA-Z_?$]*)\\.([a-zA-Z_?$][\\w?$]*)\\s*(=)\\s*(\\()(?=(?:[^\\(\\)]*)?\\)\\s*=>)",
+      "beginCaptures": {
+        "1": {
+          "name": "support.class.js"
+        },
+        "2": {
+          "name": "entity.name.function.js"
+        },
+        "3": {
+          "name": "keyword.operator.js"
+        },
+        "4": {
+          "name": "punctuation.definition.parameters.begin.js"
+        }
+      },
+      "end": "(\\))(\\s*=>)",
+      "endCaptures": {
+        "1": {
+          "name": "punctuation.definition.parameters.end.js"
+        },
+        "2": {
+          "name": "storage.type.arrow.js"
+        }
+      },
+      "patterns": [
+        {
+          "include": "#function-params"
+        }
+      ]
+    },
+    {
       "captures": {
         "1": {
           "name": "keyword.operator.new.js"
         },
         "2": {
@@ -459,12 +492,19 @@
     {
       "match": "\\b(console)\\b",
       "name": "entity.name.type.object.js.console"
     },
     {
-      "match": "\\.(warn|info|log|error|time|timeEnd|assert)\\b",
-      "name": "support.function.js.console"
+      "match": "\\b(\\.)(assert|clear|debug|error|info|log|profile|profileEnd|time|timeEnd|warn)(?=\\()",
+      "captures": {
+        "1": {
+          "name": "meta.delimiter.method.period.js"
+        },
+        "2": {
+          "name": "support.function.js.console"
+        }
+      }
     },
     {
       "include": "#numbers"
     },
     {
@@ -645,10 +685,10 @@
     {
       "match": "\\b(Infinity|NaN|undefined)\\b",
       "name": "constant.language.js"
     },
     {
-      "begin": "(?<=[\\[=(:+,!]|^|return|&&|\\|\\|)\\s*(/)(?![/*+{}?])(?=.*/)",
+      "begin": "(?<=[\\[=(?:+,!]|^|return|&&|\\|\\|)\\s*(/)(?![/*+{}?])(?=.*/)",
       "beginCaptures": {
         "1": {
           "name": "punctuation.definition.string.begin.js"
         }
       },
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