feat(sismember): adds validation

nileshmali · Aug 9, 2017 · b747fbb · b747fbb
1 parent dd9449d
commit b747fbb
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/commands/sismember.ts b/src/commands/sismember.ts
@@ -1,4 +1,7 @@
 export function sismember(key: string, value: any) {
   const set = this.data.get(key) || new Set();
+  if (!(set instanceof Set)) {
+    throw new Error(`Key ${key} does not contain a set`);
+  }
   return set.has(value) ? 1 : 0;
 }