chore: convert various JS to TS (#2062)

1 files changed, 29 insertions, 0 deletions

diff --git a/src/stores/lib/Reaction.ts b/src/stores/lib/Reaction.ts
new file mode 100644
index 000000000..0ca24a6fa
--- /dev/null
+++ b/src/stores/lib/Reaction.ts
@@ -0,0 +1,29 @@
+import { autorun } from 'mobx';
+
+export default class Reaction {
+  reaction;
+
+  isRunning = false;
+
+  dispose;
+
+  constructor(reaction) {
+    this.reaction = reaction;
+  }
+
+  start() {
+    if (!this.isRunning) {
+      this.dispose = autorun(this.reaction);
+      this.isRunning = true;
+    }
+  }
+
+  stop() {
+    if (this.isRunning) {
+      this.dispose?.();
+      this.isRunning = false;
+    }
+  }
+}
+
+export const createReactions = reactions => reactions.map(r => new Reaction(r));