Error on vCard.saveToFile('./eric-nesser.vcf') --- Error : fs.writeFileSync is not a function

[vishakhacreativewebo]

please suggest me... everything i tested but come error fs.writeFileSync is not a function when i savetofile. but fs.writeFileSync is inbuild when i install vcard package

[Rouvo]

are you running it on client side or server side? error sounds like you are not in a node.js environment