docs: when can't import binary, info user to enable filter

src/pages/Importer/useImportBinary.ts

@@ -26,7 +26,7 @@ export function useImportBinary(newWorkspace: IWikiWorkspace | undefined) {
       });
       setImportSuccess(true);
     } catch (error) {
-      setError(`Failed to import binary tiddlers: ${(error as Error).message} ${(error as Error).stack ?? ''}`);
+      setError(`Failed to import binary tiddlers, maybe you forget to enable custom filter in Tiddlywiki?: ${(error as Error).message} ${(error as Error).stack ?? ''}`);
     } finally {
       setImportingBinary(false);
     }

src/services/ImportService/ExpoReadStream.ts

@@ -28,8 +28,9 @@ export class ExpoReadStream extends Readable {
       const fileInfo = await fs.getInfoAsync(this.fileUri, { size: true });
       if (fileInfo.exists) {
         this.fileSize = fileInfo.size ?? 0;
-      } else {
-        this.fileSize = 0;
+      }
+      if (this.fileSize === 0) {
+        this.emit('error', new Error('File size is 0'));
       }
     } catch (error) {
       this.emit('error', error);
@@ -43,7 +44,6 @@ export class ExpoReadStream extends Readable {
       length: this.chunkSize,
     } satisfies fs.ReadingOptions;
     fs.readAsStringAsync(this.fileUri, readingOptions).then(chunk => {
-
       if (chunk.length === 0) {
         // End of the stream
         this.emit('progress', 1);

src/services/ImportService/index.ts

@@ -246,8 +246,9 @@ export class ImportService {
     const JSON_READ_LENGTH = 512 * 1024;
     // get content length use first pass
     let dataCount = 0;
+    const binaryFileListPath = getWikiBinaryTiddlersListCachePath(workspace);
     try {
-      const readStream = createReadStream(getWikiBinaryTiddlersListCachePath(workspace), { length: JSON_READ_LENGTH * 2 });
+      const readStream = createReadStream(binaryFileListPath, { length: JSON_READ_LENGTH * 2 });
       readStream.on('progress', (progress: number) => {
         setProgress.setReadListProgress(progress);
       });
@@ -275,13 +276,13 @@ export class ImportService {
         });
       });
     } catch (error) {
-      throw new Error(`loadBinaryTiddlersAsFilesFromServer() Failed to read tiddler text store, ${(error as Error).message}`);
+      throw new Error(`loadBinaryTiddlersAsFilesFromServer() Failed to read tiddler text store ${binaryFileListPath}, ${(error as Error).message}`);
     }
     // reset progress, start really processing data.
     setProgress.setReadListProgress(0);
     let batchedBinaryTiddlerFieldsStream: Chain;
     try {
-      const readStream = createReadStream(getWikiBinaryTiddlersListCachePath(workspace), { length: JSON_READ_LENGTH });
+      const readStream = createReadStream(binaryFileListPath, { length: JSON_READ_LENGTH });
       readStream.on('progress', (progress: number) => {
         setProgress.setReadListProgress(progress);
       });