Work class and interface snip after export in TypeScript

`export default class SomeClass { ... }` is valid TypeScript code, and it is an useful idiom.
So I think the snippet should work after `export` keyword.

Author: pocke

neosnippets/typescript.snip

@@ -7,7 +7,7 @@ options     head
 
 snippet     class
 abbr        class NAME {...}
-options     head
+options     word
   class ${1:#:NAME} {
     constructor(${2:#:Args}) {
       ${3:#:TARGET}
@@ -41,7 +41,7 @@ options     head
 
 snippet     interface
 abbr        interface NAME {...}
-options     head
+options     word
   interface ${1:#:NAME} {
     ${0:#:TARGET}
   }