It is not mapping parameters that are string without assign default values in it.

[rushisharma]

Is it necessary to assign blank values in the string parameter of class?

Because it is not mapping parameters that are string without assign default values in it.

for example,

not mapping when class is,

class destination {
id : string,
name :string,
address :string
}

we need to assign default values like,

class destination {
id : string='',
name :string='',
address :string=''
}

Any solution so that we don't need to assign default values?