fix #4153 and #0004154

1 files changed, 68 insertions, 0 deletions

diff --git a/extension/lib/module-trampoline.js b/extension/lib/module-trampoline.js
new file mode 100644
index 000000000..4cdc9aab3
--- /dev/null
+++ b/extension/lib/module-trampoline.js
@@ -0,0 +1,68 @@
+/*
+ This file is part of TALER
+ (C) 2016 GNUnet e.V.
+
+ TALER is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+ */
+
+
+/**
+ * Boilerplate to initialize the module system and call main()
+ */
+
+"use strict";
+
+if (typeof System === "undefined") {
+  throw Error("system loader not present (must be included before the" +
+    " trampoline");
+}
+
+System.config({
+  defaultJSExtensions: true,
+});
+
+let me = window.location.protocol
+  + "//" + window.location.host
+  + window.location.pathname.replace(/[.]html$/, ".js");
+
+let domLoaded = false;
+
+document.addEventListener("DOMContentLoaded", function(event) {
+  domLoaded = true;
+});
+
+function execMain(m) {
+  if (m.main) {
+    console.log("executing module main");
+    m.main();
+  } else {
+    console.warn("module does not export a main() function");
+  }
+}
+
+console.log("loading", me);
+
+System.import(me)
+  .then((m) => {
+    console.log("module imported", me);
+    if (domLoaded) {
+      execMain(m);
+      return;
+    }
+    document.addEventListener("DOMContentLoaded", function(event) {
+      execMain(m);
+    });
+  })
+  .catch((e) => {
+    console.log("trampoline failed");
+    console.error(e.stack);
+  });
\ No newline at end of file