Expose manifest params JSON

routes/index.mjs

@@ -1,6 +1,7 @@
 import generateManifest from '../controllers/manifest.mjs';
 import generateCanvas from '../controllers/canvas.mjs';
 import generateSequence from '../controllers/sequence.mjs';
+import exposeParams from '../controllers/params.mjs';
 import express from 'express';
 
 let router = express.Router();
@@ -26,5 +27,9 @@ router.get('/iiif/:manifestid/sequence/:name', async function(req, res) {
 	res.json(sequence);
 });
 
+/* GET possible params for manifest responses */
+router.get('/params', async function(req, res) {
+	res.json(await exposeParams());
+});
 
-export default router;
+export default router;