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Don't crash on empty CSV export

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Fixes #3820
This commit is contained in:
rijkvanzanten
2021-01-27 15:36:30 -05:00
parent c89b83a76a
commit 55951a6f68
1 changed files with 11 additions and 5 deletions
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16
api/src/middleware/respond.ts
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@@ -55,11 +55,17 @@ export const respond: RequestHandler = asyncHandler(async (req, res) => {
res.attachment(`${filename}.csv`);
res.set('Content-Type', 'text/csv');
const stream = new PassThrough();
stream.end(Buffer.from(JSON.stringify(res.locals.payload.data), 'utf-8'));
const json2csv = new Transform({
transforms: [transforms.flatten({ separator: '.' })],
});
return stream.pipe(json2csv).pipe(res);
if (!res.locals.payload?.data || res.locals.payload.data.length === 0) {
stream.end(Buffer.from(''));
return stream.pipe(res);
} else {
stream.end(Buffer.from(JSON.stringify(res.locals.payload.data), 'utf-8'));
const json2csv = new Transform({
transforms: [transforms.flatten({ separator: '.' })],
});
return stream.pipe(json2csv).pipe(res);
}
}
}