diff --git a/src/js/Constants.ts b/src/js/Constants.ts
new file mode 100644
index 00000000..d8e9a9c8
--- /dev/null
+++ b/src/js/Constants.ts
@@ -0,0 +1 @@
+export const JSONP_PROXY = "https://alaskybis.cds.unistra.fr/cgi/JSONProxy";