refactor: type abstract-chunk-store and idb-chunk-store

src/react-app-env.d.ts

@@ -145,3 +145,64 @@ consumes the data in `encryptedStream` and returns a plaintext version.
    */
   export function encryptedSize(plaintextSize: number): number
 }
+
+declare module 'abstract-chunk-store' {
+  type GetCallback = (err: Error | null, buffer: Buffer) => void
+
+  export interface ChunkStore {
+    /**
+     * Create a new chunk store. Chunks must have a length of `chunkLength`.
+     */
+    constructor(chunkLength: number)
+
+    /**
+     * Add a new chunk to the storage. `index` should be an integer.
+     */
+    put(
+      index: number,
+      chunkBuffer: Buffer,
+      cb: (err: Error | null) => void
+    ): void
+
+    /**
+     * Retrieve a chunk stored. `index` should be an integer.
+     */
+    get(index: number, cb: GetCallback): void
+    get(
+      index: number,
+      options: { offset?: number; length?: number },
+      cb: GetCallback
+    ): void
+
+    /**
+     * Close the underlying resource, e.g. if the store is backed by a file, this would close the file descriptor.
+     */
+    close(cb: (err: Error | null) => void)
+
+    /**
+     * Destroy the file data, e.g. if the store is backed by a file, this would delete the file from the filesystem.
+     */
+    destroy(cb: (err: Error | null) => void)
+
+    /**
+     * Expose the chunk length from the constructor so that code that receives a chunk store can know what size of chunks to write.
+     */
+    chunkLength: number
+  }
+}
+
+declare module 'idb-chunk-store' {
+  import { TorrentOptions } from 'webtorrent'
+  import { ChunkStore } from 'abstract-chunk-store'
+
+  export default function idbChunkStore(
+    chunkLength: number,
+    opts?: Partial<{
+      /**
+       * A name to separate the contents of different stores
+       */
+      name: string
+    }> &
+      TorrentOptions.store
+  ): ChunkStore
+}

src/services/FileTransfer/FileTransfer.ts

@@ -1,7 +1,6 @@
 import WebTorrent, { Torrent, TorrentFile } from 'webtorrent'
 import streamSaver from 'streamsaver'
 import { Keychain, plaintextSize, encryptedSize } from 'wormhole-crypto'
-// @ts-ignore
 import idbChunkStore from 'idb-chunk-store'
 import { detectIncognito } from 'detectincognitojs'