feat: add empty session store

Author: tyler-johnson

Makefile

@@ -20,6 +20,9 @@ couch-store.js: src/couch-store.js $(SRC)
 memory-store.js: src/memory-store.js $(SRC)
 	$(BIN)/rollup $< -c -f cjs > $@
 
+empty-store.js: src/empty-store.js $(SRC)
+	$(BIN)/rollup $< -c -f cjs > $@
+
 test.js: test/index.js index.js couch-store.js memory-store.js $(TEST)
 	$(BIN)/rollup $< -c -f cjs > $@
 

src/empty-store.js

@@ -0,0 +1,15 @@
+class EmptyStore {
+  constructor() {
+    if (process.env.NODE_ENV === "production") {
+      console.warn(`Please don't use the empty session store in a production environment since it is very insecure.`);
+    }
+  }
+
+  add() {}
+  exists() { return true; }
+  remove() {}
+}
+
+export default function createEmptyStore() {
+  return new EmptyStore();
+}

src/index.js

@@ -31,6 +31,8 @@ export default function createApp(opts={}) {
   let createSessionStore;
   if (storeType === 'couch') {
     createSessionStore = require('./couch-store');
+  } else if (storeType === 'empty') {
+    createSessionStore = require('./empty-store');
   } else if (storeType === 'memory' || typeof storeType === 'undefined') {
     createSessionStore = require('./memory-store');
   } else if (typeof storeType === "string") {