1 files changed, 69 insertions, 0 deletions
diff --git a/runtime/queries/javascript/locals.scm b/runtime/queries/javascript/locals.scm
new file mode 100644
index 000000000..6d6846fc7
--- /dev/null
+++ b/runtime/queries/javascript/locals.scm
@@ -0,0 +1,69 @@
+; inherits: ecma,jsx
+
+; Both properties are matched here.
+;
+;   class Foo {
+;     this.#bar = "baz";
+;     this.quuz = "qux";
+;   }
+(field_definition
+  property: [
+    (property_identifier)
+    (private_property_identifier)
+  ] @local.definition.var)
+
+; this.foo = "bar"
+(assignment_expression
+  left: (member_expression
+    object: (this)
+    property: (property_identifier) @local.definition.var))
+
+(formal_parameters
+  (identifier) @local.definition.parameter)
+
+; function(arg = []) {
+(formal_parameters
+  (assignment_pattern
+    left: (identifier) @local.definition.parameter))
+
+; x => x
+(arrow_function
+  parameter: (identifier) @local.definition.parameter)
+
+; ({ a }) => null
+(formal_parameters
+  (object_pattern
+    (shorthand_property_identifier_pattern) @local.definition.parameter))
+
+; ({ a: b }) => null
+(formal_parameters
+  (object_pattern
+    (pair_pattern
+      value: (identifier) @local.definition.parameter)))
+
+; ([ a ]) => null
+(formal_parameters
+  (array_pattern
+    (identifier) @local.definition.parameter))
+
+(formal_parameters
+  (rest_pattern
+    (identifier) @local.definition.parameter))
+
+; Both methods are matched here.
+;
+;   class Foo {
+;     #bar(x) { x }
+;     baz(y) { y }
+;   }
+(method_definition
+  [
+    (property_identifier)
+    (private_property_identifier)
+  ] @local.definition.function
+  (#set! definition.var.scope parent))
+
+; this.foo()
+(member_expression
+  object: (this)
+  property: (property_identifier) @local.reference)