I wanted to type a reactive object as follow:

const client = reactive<PublicClient>({})

but my linter complains:
Type '{}' is missing the following properties from type {...

so I add Partial

const client = reactive<Partial<PublicClient>>({})

but it has the annoying side effect that forces me later on to check every properties are indeed defined otherwise I get:
Cannot invoke an object which is possibly 'undefined'

the PublicClient type is rather complex and has many properties so it’s not practicle to create a default object to instantiate it like:

reactive<PublicClient>(defaultPublicClient)

what would be best solution to properly type my client object?