Nevermind, they do exist

The atom console is outdated

Author: icecream17

grammars/tree-sitter-javascript.cson

@@ -216,6 +216,9 @@ scopes:
   '"|="': 'keyword.operator.js'
   '"^="': 'keyword.operator.js'
   '"&="': 'keyword.operator.js'
+  '"??="': 'keyword.operator.js'
+  '"||="': 'keyword.operator.js'
+  '"&&="': 'keyword.operator.js'
   '"-="': 'keyword.operator.js'
   '"+="': 'keyword.operator.js'
   '"%="': 'keyword.operator.js'