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fix: Cloud files throwing error on upload #685

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fix: Cloud files throwing error on upload #685

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fix: Cloud files throwing error on upload
divyeshagrawal Nov 30, 2025
23d4fbb
fix: Update type of cacheFiles function and mock arrayBuffer properly
divyeshagrawal Nov 30, 2025
13ffe37
fix: Update mock of arrayBuffer
divyeshagrawal Nov 30, 2025
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24 changes: 22 additions & 2 deletions src/AjaxUploader.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -170,8 +170,28 @@ class AjaxUploader extends Component<UploadProps> {
}
}

uploadFiles = (files: File[]) => {
const originFiles = [...files] as RcFile[];
cacheFiles = async (files: File[]): Promise<RcFile[]> => {
if (files?.length) {
const filesArray = [...files];

const cachedFiles = await Promise.all(
filesArray.map(async file => {
const buffer = await file.arrayBuffer();
return new File([buffer], file.name, {
type: file.type,
lastModified: file.lastModified,
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@afc163 afc163 Dec 12, 2025

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Other file attributes would be lost.

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@divyeshagrawal divyeshagrawal Dec 13, 2025 •
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Screenshot from 2025-12-13 19-54-43

I’ve attached a screenshot after printing the original and cloned File objects, and I don’t see any difference in their attributes. Please let me know if I’m missing something.

});
}),
);

return cachedFiles as RcFile[];
}

return [];
};

uploadFiles = async (files: File[]) => {
const originFiles = await this.cacheFiles(files);
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@gemini-code-assist gemini-code-assist bot Nov 30, 2025

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medium

The cacheFiles function is declared to return a Promise<RcFile[]>, but the File objects created inside do not have a uid property, so they are not RcFiles. Casting cachedFiles as RcFile[] on line 187 is type-unsafe. The function should promise File[] instead. The casting can be moved to uploadFiles.

Also, filesArray on line 175 is a redundant copy of the files array and can be removed.

  cacheFiles = async (files: File[]): Promise<File[]> => {
    if (files?.length) {
      const cachedFiles = await Promise.all(
        files.map(async file => {
          const buffer = await file.arrayBuffer();
          return new File([buffer], file.name, {
            type: file.type,
            lastModified: file.lastModified,
          });
        }),
      );

      return cachedFiles;
    }

    return [];
  };

  uploadFiles = async (files: File[]) => {
    const originFiles = (await this.cacheFiles(files)) as RcFile[];

const postFiles = originFiles.map((file: RcFile & { uid?: string }) => {
// eslint-disable-next-line no-param-reassign
file.uid = getUid();
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