1 files changed, 0 insertions, 44 deletions
diff --git a/Timeline/ClientApp/src/app/common.ts b/Timeline/ClientApp/src/app/common.ts
deleted file mode 100644
index 0a2d345f..00000000
--- a/Timeline/ClientApp/src/app/common.ts
+++ /dev/null
@@ -1,44 +0,0 @@
-import React from "react";
-import { Observable, Subject } from "rxjs";
-
-// This error is thrown when ui goes wrong with bad logic.
-// Such as a variable should not be null, but it does.
-// This error should never occur. If it does, it indicates there is some logic bug in codes.
-export class UiLogicError extends Error {}
-
-export function useEventEmiiter(): [() => Observable<null>, () => void] {
-  const ref = React.useRef<Subject<null> | null>(null);
-
-  return React.useMemo(() => {
-    const getter = (): Subject<null> => {
-      if (ref.current == null) {
-        ref.current = new Subject<null>();
-      }
-      return ref.current;
-    };
-    const trigger = (): void => {
-      getter().next(null);
-    };
-    return [getter, trigger];
-  }, []);
-}
-
-export function useValueEventEmiiter<T>(): [
-  () => Observable<T>,
-  (value: T) => void
-] {
-  const ref = React.useRef<Subject<T> | null>(null);
-
-  return React.useMemo(() => {
-    const getter = (): Subject<T> => {
-      if (ref.current == null) {
-        ref.current = new Subject<T>();
-      }
-      return ref.current;
-    };
-    const trigger = (value: T): void => {
-      getter().next(value);
-    };
-    return [getter, trigger];
-  }, []);
-}