[Vuejs]-Dynamic column in PDFMAKE

Wouldn’t setting a variable outside the document definition suffice?, I believe a piece of code will do the trick.

      var columns = [];
      var var1; // Defaults to undefined
      var var2; // Defaults to undefined
      
      var1 ="";
      
      // If we have a value we add the column
      if (var1 !== undefined) {
        columns.push({ text: "var1" });
      }
      
      if (var2 !== undefined) {
        columns.push({ text: "var2" });
      }
      
      // PDFMake document definition
      var dd = {
        content: [
            {
                alignment: 'justify',
                columns: columns
            },

        ]
        ...
    }