How to extend inputObjectType in new inputObjectType

[singhnivedita95]

const FirstDataInput = inputObjectType({
name: 'FirstDataInput',
definition(t) {
t.nonNull.string('f_name')
t.nonNull.string('l_name')
},
})

const SecondDataInput = inputObjectType({
name: 'SecondDataInput',
definition(t) {
// here want f_name and l_name as well from FirstDataInput
t.nonNull.string('email')
t.nonNull.string('phone')
},
})