Add a first cut at an express-based backend

express/run.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# XXX should we default to strict or non-strict here?
+
+set -eu
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+run_dir="$DIR"
+
+source "$run_dir"/../framework/shims/common
+source "$run_dir"/../framework/shims/node.common
+
+strict_arg="${1:---no-strict}"
+
+if [[ "$strict_arg" = "--strict" ]] ; then
+    strict="yes"
+else
+    strict="no"
+fi
+
+cmd="tsx"
+if [[ "strict" = "yes" ]] ; then
+    cmd="ts-node"
+fi
+
+cd "$run_dir"
+
+"$run_dir"/check.sh
+#echo checked
+# $ROOT/cmd "$cmd" $run_dir/app.ts
+../cmd node "$run_dir"/out/app.js