server.createList() and server.create() creates duplicate values with dynamic factory definition

In my server I defined a factory

    factories: {
      story: Factory.extend<UserStory>({
        get userStory() {
          return faker.name.jobDescriptor();
        },
        get name() {
          return faker.name.title();
        },
        get link() {
          return faker.internet.url();
        },
        get status(): StoryStatus {
          const num = getRandomInt(1, 4) as 1 | 2 | 3; //ranom
          if (num === 1) {
            return "Construction";
          } else if (num === 2) {
            return "Design";
          } else {
            return "Release";
          }
        },
        get proxy() {
          return faker.name.firstName();
        },
      }),
    },

But when I call createList in my seeds function I am just getting a duplicate object for each of the 20 values

  seeds(server) {
      server.createList("story", 20);
    }

I even tried just doing

  seeds(server) {
      server.create("story");
      server.create("story");
      server.create("story");
    }

and each server.create() give me the same value.

I want it so I am give a unique object with different properties for each value, but it doesnt seem to be working.

[bkdexter]

Here’s a REPL that shows it: https://miragejs.com/repl/v2/3d7683e08a It uses the ‘getter’ concept in extending the factory as described above and also showcased in the miragejs typescript example: https://github.com/miragejs/examples/blob/master/react-typescript/src/mirage/index.ts

Based on the published typescript example my expectation would be that the getters defined in the factory would be called over and over, but they are only called once.

FYI - removing the ‘get’ from the property definitions does work as desired: https://miragejs.com/repl/v2/a1982958aa

[mansur-gabidullin]

I got duplicate entries in another scenario too. https://miragejs.com/repl/v2/bcc8e81470

Can you please tell me if my scenario is related to this issue?