typescript-ts-mode: Add a rule for function_signature

* lisp/progmodes/typescript-ts-mode.el
(typescript-ts-mode--font-lock-settings):
Add a rule for function_signature (bug#63867)

1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/progmodes/typescript-ts-mode.el b/lisp/progmodes/typescript-ts-mode.el
index e30eb880266..09e04f0cd0e 100644
--- a/lisp/progmodes/typescript-ts-mode.el
+++ b/lisp/progmodes/typescript-ts-mode.el
@@ -173,9 +173,10 @@ Argument LANGUAGE is either `typescript' or `tsx'."
    :feature 'declaration
    `((function
       name: (identifier) @font-lock-function-name-face)
-
      (function_declaration
       name: (identifier) @font-lock-function-name-face)
+     (function_signature
+      name: (identifier) @font-lock-function-name-face)
 
      (method_definition
       name: (property_identifier) @font-lock-function-name-face)