Reduced token size

src/build/core/NewFunction.go

@@ -10,7 +10,7 @@ import (
 )
 
 // NewFunction creates a new function.
-func NewFunction(name string, file *fs.File, body token.List) *Function {
+func NewFunction(name string, file *fs.File, body []token.Token) *Function {
 	return &Function{
 		Name: name,
 		File: file,