Error in method encrypt, userPassword not recognize

[ClauRuizR]

[GuoliangWang]

So do mine

[mateenkiani]

I am also getting same error.
By doing this:

pdfDoc
    .encrypt({
        password: '123',
        ownerPassword: '123',
        userProtectionFlag: 4
    })
    .endPDF();

error is gone but encryption is not working.

[mateenkiani]

As a workaround you can add ts-ignore.

pdfDoc
    .encrypt({
        //  @ts-ignore
        userPassword: '123',
        ownerPassword: '123',
        userProtectionFlag: 4
    })
    .endPDF();