Demo for query storing

Change-Id: I947bcac841992c3f6cfd01ab337c265b0d01cb70
diff --git a/node_modules/base64-js/index.d.ts b/node_modules/base64-js/index.d.ts
new file mode 100644
index 0000000..7d9fa1d
--- /dev/null
+++ b/node_modules/base64-js/index.d.ts
@@ -0,0 +1,3 @@
+export function byteLength(b64: string): number;
+export function toByteArray(b64: string): Uint8Array;
+export function fromByteArray(uint8: Uint8Array): string;