first commit

utils/hashCode.ts

@@ -0,0 +1,7 @@
+export const hashCode = function(s: string) {
+    var h = 0, l = s.length, i = 0;
+    if ( l > 0 )
+      while (i < l)
+        h = (h << 5) - h + s.charCodeAt(i++) | 0;
+    return h;
+};