base64ToPDF.js

const doDownloadPDF = () => async dispatch => {

    let filename_attachment = '1';
    let ext = '.pdf';
    let base64Str = res.base64();
    let pdfLocation = DocumentDir + '/' + filename_attachment + ext;
    await RNFetchBlob.fs.writeFile(pdfLocation, base64Str, 'base64').then((res) => {
        // eslint-disable-next-line no-console
        console.log(res)
    }, (err) => {
        // eslint-disable-next-line no-console
        console.log(err)
    })


};