feat: support javascript prototype-attached fns (#495)

Author: emmanueltouzery

queries/javascript/aerial.scm

@@ -63,3 +63,13 @@
     (string
       (string_fragment) @name @string))?
   (#set! "kind" "Function")) @symbol
+
+; PageElementWriter.prototype.alignCanvas = function (node) {
+(assignment_expression
+  left: (member_expression
+    object: (member_expression
+      property: (property_identifier) @target
+      (#any-of? @target "prototype"))
+    ) @name
+  right: (function_expression)
+  (#set! "kind" "Method")) @symbol

tests/symbols/js_test.json

@@ -289,5 +289,20 @@
       "end_lnum": 26,
       "lnum": 26
     }
+  },
+  {
+    "col": 0,
+    "end_col": 1,
+    "end_lnum": 30,
+    "kind": "Method",
+    "level": 0,
+    "lnum": 28,
+    "name": "PageElementWriter.prototype.alignCanvas",
+    "selection_range": {
+      "col": 0,
+      "end_col": 39,
+      "end_lnum": 28,
+      "lnum": 28
+    }
   }
 ]

tests/treesitter/js_test.js

@@ -24,3 +24,7 @@ const fn_3 = function () {};
 
 function* g() {}
 const g_1 = function* () {};
+
+PageElementWriter.prototype.alignCanvas = function (node) {
+  this.writer.alignCanvas(node);
+};