.map() in pdf make docDefinition

i'm using pdfMake (http://pdfmake.org/#/) and to make the model to export for in pdf i use that code:

  function createPDF(events, date){
   let docDefinition = {
      content: [
        {
          style: 'tableExample',
          table: {
            headerRows: 1,
            body: [
              [{text: 'Horário', style: 'tableHeader1'}, {text: 'Nome', style: 'tableHeader1'}, {text: 'Descrição', style: 'tableHeader'}],
              events.map((value, index)=>{
                return(
                  [value.hora_inicio, value.title, value.description]
                )
              })  
            ]
          },
          layout: 'lightHorizontalLines'
        },
      ],
        styles: {
        header: {
          fontSize: 18,
          bold: true,
          margin: [0, 0, 0, 10]
        },
        tableHeader: {
          bold: true,
          fontSize: 16,
          color: 'black',
          margin: [0,0,100,10]
        },
        tableHeader1: {
          bold: true,
          fontSize: 16,
          color: 'black',
          margin: [0,0,50,10]
        }
      }

    }
    pdfMake.createPdf(docDefinition).open();
  }

but the .map() doesnt work, if i use any string instead of the map, it works, I dont find anything about that in documentaion and already find a question about that: PDFMake - make PDF from dynamical content (an array)

but if i use only the .map() to show data it works, and if i use some data to create the table and only use the .map to create the rows, when i export, this create the pdf without any data.

already tried to make a console.log(events) to see the data, and it's right