Add "debugger" as reserved keyword.

This closes: #164

Author: josteink

typescript-mode.el

@@ -266,7 +266,7 @@ Match group 1 is MUMBLE.")
 (defconst typescript--keyword-re
   (typescript--regexp-opt-symbol
    '("abstract" "any" "as" "async" "await" "boolean" "bigint" "break" "case" "catch" "class" "const"
-     "constructor" "continue" "declare" "default" "delete" "do" "else"
+     "constructor" "continue" "debugger" "declare" "default" "delete" "do" "else"
      "enum" "export" "extends" "extern" "false" "finally" "for"
      "function" "from" "get" "goto" "if" "implements" "import" "in" "instanceof"
      "interface" "keyof" "let" "module" "namespace" "never" "new" "null" "number" "object" "of"