Fix issue with isBehavior return true for arrays

funkia · Sep 4, 2021 · a96b01c · a96b01c
1 parent 96a3bf2
commit a96b01c
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/behavior.ts b/src/behavior.ts
@@ -139,7 +139,7 @@ function refresh<A>(b: Behavior<A>, t: number) {
 
 export function isBehavior<A>(b: unknown): b is Behavior<A> {
   return (
-    (typeof b === "object" && "at" in b && !isPlaceholder(b)) ||
+    (typeof b === "object" && "at" in b && "pull" in b && !isPlaceholder(b)) ||
     (isPlaceholder(b) && (b.source === undefined || isBehavior(b.source)))
   );
 }

diff --git a/src/common.ts b/src/common.ts
@@ -5,7 +5,7 @@ import { tick } from "./clock";
 export type Time = number;
 
 function isBehavior(b: unknown): b is Behavior<unknown> {
-  return typeof b === "object" && "at" in b;
+  return typeof b === "object" && "at" in b && "pull" in b;
 }
 
 export type PullHandler = (pull: (t?: number) => void) => () => void;