Darek

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@H-Plus-Time please run: `yarn run lint:ts:fix` on your PR and push the changes. Thx

1. Last time Excel support came up, the answer was: `.csv is good enough` 2. In your project you are using `exceljs` which is not maintained anymore

`py-polars` uses [calamine](https://github.com/tafia/calamine) as it's default Excel engine, hence it could be possible to add this on the Rust side.

@universalmind303 Can you please add a release tag for this version? Thx

Example above works fine using nodejs-polars `0.21.0` and bun `1.2.20` ``` [ { name: "John", "": "green", }, { name: "Anna", "": "red", } ] ```

Please pass a schema to get your expected results. Thx ``` const rows = [ { name: "John", color: "green", height: null }, { name: "Anna", color: "green", height: null...

@ad-si Does the above solution works for you? Can this be closed? Thx

So I think the issue is in [this](https://github.com/pola-rs/polars/blob/194b31ea6a47a103f4401554755ed904a7f2838e/crates/polars-core/src/frame/row/mod.rs#L119) line of code in core polars.

@akmalsoliev It's not happening, Polars was rejected from the enhancement list. If you need a different DF, use alternatives to GE, they support other DFs.

Please see the [comment](https://github.com/great-expectations/great_expectations/pull/5914#issuecomment-2276115959) on #5914