app.get('/pdfs', function (req, res) {
let json = require ('./posts.json')
let posts = []
json.forEach(function (value, key, listObj)
{
    posts.push(
        {
            userId: value.userId,
            id : value.id,
            title: value.title,
            body: value.body
        }
        )
} );

conteudoPDF = {
    content: [

        {text: 'Teste usando JSONPlaceholder', style: 'Header'},
        'Tabela cotendo todos os posts do site JSON Placeholder',
        {
            table:{
                body:[
                    [['Usuário'], ['Post'], ['Título'], ['Texto']],
                    [
                        posts.forEach(function (posts, err, results) {
                            [[posts.userId], [posts.id],
                             [posts.title], [posts.body]]
                                if(err){
                                    res.json(err)
                                }
                                else{
                                    res.json(results)
                                }
                         },
                         posts.push()
                        )
                    ]
                ],
            }
        }
    ]
}
let pdfDoc = printer.createPdfKitDocument(conteudoPDF);
pdfDoc.pipe(fs.createWriteStream('../pdfs/testeJson.pdf'));
console.log('Imprimiu!!');
pdfDoc.end();