Reports

Based on how memory allocation works, you need to add the index into an complex type. So you need a findex object:

findex = { value: 0 }

When you modify the value, it saves it on the object findex which remains at the same adress space

function Base64toPDFandSave (base64String, filename) {

    const fs = require('fs');
    const path = require('path');

    // Remove the prefix if it exists
    const base64Data = base64String.replace(/^data:application\/pdf;base64,/, "");

    // Define the path to save the PDF file on the user's desktop
    const desktopPath = path.join(require('os').homedir(), 'Desktop');
    const filePath = path.join(desktopPath, filename);

    // Write the PDF file
    fs.writeFile(filePath, base64Data, 'base64', (err) => {
    if (err) {
    console.error('Error saving the file:', err);
    } else {
    console.log('PDF file saved successfully at:', filePath);
    }
    });

}

function JsontoBase64 (jsonData, filename) {
    // Verifica se jsonData é um objeto
    if (typeof jsonData !== 'object' || jsonData === null) {
        throw new Error("Entrada inválida: deve ser um objeto JSON.");
    }

    // Função recursiva para percorrer o JSON e encontrar os campos "BytesBoleto"
    function procurarBytesBoleto(obj, fname, findex) {
        for (const key in obj) {
            console.log("......")
            console.log(key + "::" + findex.value);
            if (obj.hasOwnProperty(key)) {
                if (key === 'BytesBoleto' && typeof obj[key] === 'string') {
                    findex.value= findex.value+1;
                    console.log("BytesBoleto:"+findex.value);
                    Base64toPDFandSave(obj[key], fname+findex.value.toString()+'.pdf');
                } else if (typeof obj[key] === 'object') {
                    console.log("Recursiva:"+findex.value);
                    procurarBytesBoleto(obj[key], fname, findex); // Chama a função recursivamente
                }
            }
        }
    }
    const findex = { value: 0}
    procurarBytesBoleto(jsonData, filename, findex);    
}

JsontoBase64 (jsonobj, 'boleto');

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