Helper to define has-one / has-many relation fields

[Quramy]

Something like this:

UserFactory.create({
  posts: {
    create: [await PostFactory.buildCreateInput()]
  }
})

tsc never emits diagnostics for the above code , but the runtime error occurs because the object resolved by buildCreateInput includes { author: { ... } } property.

Solution

Model Factory 's .create() methods screens the input data before passing to Prisma client's raw .crate function.
The screening procedure should the following:

expect(screen({
  id: "",
  name: "",
  posts: {
    create: [{ id: "", author: { ... } }],
    connect: [{ id: "" }],
  }
}).toEqual({
  id: "",
  name: "",
  posts: {
    create: [{ id: "" }], // The author property is removed
    connect: [[ id: "" }],
  }
})