jotai migration (#221)

frontend/src/atoms/downloads.ts

@@ -1,22 +1,13 @@
 import * as O from 'fp-ts/Option'
 import { pipe } from 'fp-ts/lib/function'
-import { atom, selector } from 'recoil'
 import { RPCResult } from '../types'
+import { atom } from 'jotai'
 
-export const downloadsState = atom<O.Option<RPCResult[]>>({
-  key: 'downloadsState',
-  default: O.none
-})
+export const downloadsState = atom<O.Option<RPCResult[]>>(O.none)
 
-export const loadingDownloadsState = selector<boolean>({
-  key: 'loadingDownloadsState',
-  get: ({ get }) => O.isNone(get(downloadsState))
-})
+export const loadingDownloadsState = atom<boolean>((get) => O.isNone(get(downloadsState)))
 
-export const activeDownloadsState = selector<RPCResult[]>({
-  key: 'activeDownloadsState',
-  get: ({ get }) => pipe(
-    get(downloadsState),
-    O.getOrElse(() => new Array<RPCResult>())
-  )
-})
+export const activeDownloadsState = atom<RPCResult[]>((get) => pipe(
+  get(downloadsState),
+  O.getOrElse(() => new Array<RPCResult>())
+))