Type fixes (@types/react is not installed)

mitodl · Feb 3, 2025 · f5c56b7 · f5c56b7
1 parent 7ea725c
commit f5c56b7
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/src/utils/composeRefs.test.tsx b/src/utils/composeRefs.test.tsx
@@ -4,8 +4,8 @@ import { render, screen } from "@testing-library/react"
 
 describe("composeRefs", () => {
   test("Composing object + fn ref", () => {
-    const objRef1: React.RefObject<HTMLDivElement> = { current: null }
-    const objRef2: React.RefObject<HTMLDivElement> = { current: null }
+    const objRef1 = React.createRef<HTMLDivElement>()
+    const objRef2 = React.createRef<HTMLDivElement>()
     const fnRef1 = jest.fn()
     const fnRef2 = jest.fn()
 

diff --git a/src/utils/useInterval.ts b/src/utils/useInterval.ts
@@ -6,7 +6,7 @@ import { useRef, useEffect } from "react"
  * Based on https://overreacted.io/making-setinterval-declarative-with-react-hooks/
  */
 const useInterval = (callback: () => void, delay: number | null) => {
-  const savedCallback = useRef<() => void>()
+  const savedCallback = useRef<() => void>(() => {})
 
   useEffect(() => {
     savedCallback.current = callback