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CSV columns repeat in v3+ when optional columns prop not included #411

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joerichards121 opened this issue Apr 25, 2024 · 0 comments

joerichards121 commented Apr 25, 2024

/*
 *  Let data be a long array of objects containing the same keys 
 */
let data = [
   { k1: v1, k2: v2 }, 
   { k1: v3, k2: v4 }, 
   { k1: v5, k2: v6 }, 
   ...
]
 
/* 
 *  Let CsvDownloader be initialized as so 
 */
<CsvDownloader filename='fileName' datas={data}>
  <Button>Download</Button>
</CsvDownloader>

Upon upgrading react-csv-downloader to v3, we noticed the created .csv file contains repeated columns when opened in excel. For example,

k1 | k2 | k1 | k2 | k1 ..
v1   v2   v1   v2   v1 ..
v3   v4   v3   v4   v3 ..
v5   v6   v5   v6   v5 ..
..   ..   ..   ..   ..

This bug is not present in version 2.9. It appears that supplying columns prop fixes the bug.

The text was updated successfully, but these errors were encountered:

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