Chore: improve typing

src/Logic/UIEventSource.ts

@@ -37,8 +37,10 @@ export class Stores {
      */
     public static FromPromise<T>(promise: Promise<T>): Store<T | undefined> {
         const src = new UIEventSource<T>(undefined)
-        promise?.then((d) => src.setData(d))
-        promise?.catch((err) => console.warn("Promise failed:", err))
+        promise?.catch((err): undefined => {
+            console.warn("Promise failed:", err)
+            return undefined
+        })?.then((d) => src.setData(d))
         return src
     }
 
@@ -108,7 +110,6 @@ export class Stores {
 
     public static fromArray<T>(sources: ReadonlyArray<UIEventSource<T>>): UIEventSource<T[]> {
         const src = new UIEventSource<T[]>(sources.map(s => s.data))
-
         for (let i = 0; i < sources.length; i++) {
             sources[i].addCallback(content => {
                 src.data[i] = content
@@ -120,7 +121,17 @@ export class Stores {
                 sources[i].setData(contents[i])
             }
         })
+        return src
+    }
 
+    public static fromStoresArray<T>(sources: ReadonlyArray<Store<T>>): Store<T[]> {
+        const src = new UIEventSource<T[]>(sources.map(s => s.data))
+        for (let i = 0; i < sources.length; i++) {
+            sources[i].addCallback(content => {
+                src.data[i] = content
+                src.ping()
+            })
+        }
         return src
     }
 }
@@ -388,7 +399,8 @@ export class ImmutableStore<T> extends Store<T> {
         this.data = data
     }
 
-    private static readonly pass: () => void = () => {}
+    private static readonly pass: () => void = () => {
+    }
 
     addCallback(_: (data: T) => void): () => void {
         // pass: data will never change
@@ -666,7 +678,8 @@ class MappedStore<TIn, T> extends Store<T> {
 }
 
 export class UIEventSource<T> extends Store<T> implements Writable<T> {
-    private static readonly pass: () => void = () => {}
+    private static readonly pass: () => void = () => {
+    }
     public data: T
     _callbacks: ListenerTracker<T> = new ListenerTracker<T>()