Adding keys request

src/database/query.ts

@@ -74,6 +74,19 @@ export default class Query {
       });
    }
 
+   async keys() {
+      const lock = await this.database.locks.lock(this.path);
+      try {
+         let obj = await this.getField(this.path);
+         if (!obj)
+            return [];
+         let fields = await this.getFields(this.path);
+         return fields.map(field => field.split("/").filter(e => e !== "")).filter(path => path.length === this.path.length + 1).map(path => path.pop());
+      } finally {
+         lock()
+      }
+   }
+
    async get() {
       const lock = await this.database.locks.lock(this.path);
       try {
@@ -243,6 +256,7 @@ export default class Query {
                if (type === ChangeTypes.PUSH) {
                   send({
                      id: change.path[change.path.length - 1],
+                     path: change.path,
                      data: await new Query(this.database, change.path).get()
                   })
                } else {