Update runtime files.
diff --git a/runtime/compiler/dart2js.vim b/runtime/compiler/dart2js.vim
new file mode 100644
index 0000000..b6a4e4d
--- /dev/null
+++ b/runtime/compiler/dart2js.vim
@@ -0,0 +1,28 @@
+" Vim compiler file
+" Compiler: Dart to JavaScript Compiler
+" Maintainer: Doug Kearns <dougkearns@gmail.com>
+" Last Change: 2019 May 08
+
+if exists("current_compiler")
+ finish
+endif
+let current_compiler = "dart2js"
+
+if exists(":CompilerSet") != 2 " older Vim always used :setlocal
+ command -nargs=* CompilerSet setlocal <args>
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+CompilerSet makeprg=dart2js
+CompilerSet errorformat=%E%f:%l:%c:,
+ \%-GError:\ Compilation\ failed.,
+ \%CError:\ %m,
+ \%Z\ %#^%\\+,
+ \%C%.%#,
+ \%trror:\ %m,
+ \%-G%.%#
+
+let &cpo = s:cpo_save
+unlet s:cpo_save