XLSX & Custom Data Formats

Custom File Loaders

HelloCSV supports integrating data formats different from standard CSV / TSV uploads by allowing developers to create a CustomFileLoader

interface CustomFileLoader {
  mimeType: string;
  label: string;
  convert: (
    loadEvent: ProgressEvent<FileReader>,
    file: File
  ) =>
    | {
        fileName: string;
        csvData: string;
      }
    | Promise<{
        fileName: string;
        csvData: string;
      }>;
}

A CustomFileLoader is responsible for parsing a file, of a target mimeType, and returning a csvData string, which then gets passed to the rest of the pipeline.

The convert function supports returning a promise for parsing files server-side if needed.

Usage

See customFileLoader prop.