fix: do not create file when export

Author: subframe7536

src/io/common.ts

@@ -10,10 +10,10 @@ export async function check(code: Promisable<number>): Promise<void> {
 export function ignoredDataView(): DataView {
  return new DataView(new ArrayBuffer(4))
 }
-export async function getHandleFromPath(path: string): Promise<FileSystemFileHandle> {
+
+export async function getHandleFromPath(path: string, create?: boolean): Promise<FileSystemFileHandle> {
  const root = await navigator.storage.getDirectory()
- const handle = await root.getFileHandle(path, { create: true })
- return handle
+ return await root.getFileHandle(path, { create })
 }
 
 export function isOpfsVFS(vfs: FacadeVFS): boolean {

src/io/import.ts

@@ -124,7 +124,7 @@ async function importDatabaseToOpfs(
  path: string,
  source: ReadableStream<Uint8Array>,
 ): Promise<void> {
- const handle = await getHandleFromPath(path)
+ const handle = await getHandleFromPath(path, true)
  const [streamForVerify, streamData] = source.tee()
 
  await parseHeaderAndVerify(streamForVerify.getReader())