Class Factory Decorators

This package is aimed to testing and seeding at your projects. It's easy to implement and create your own class factory.

• Class Factory Decorators
  • Install through cli via command
  • Example code
  • Recommends
  • Caution

Install through cli via command

You might want to use this quick cli command to install the package.

npm i --save proposal-factory-decorator

Example code

In this example, we can see how the @Factory decorator works. It's quite simple and easy to duplicate.

import { Factory, CreateFactory } from "proposal-factory-decorator";

class User {
  @Factory(() => "name")
  field: string;

  @Factory(() => false)
  isTrue: boolean;
}

const userFact = new CreateFactory() < User > User;

(async () => {
  const user = await userFact.generate(); // Creates an User

  console.log(user); // { field: "name", isTrue: false }
})();

Recommends

It's highly recommended to use faker package. The faker package provides useful evaluations to our @Factory method.

npm i --save faker @types/faker

One simple example (extending the example above) to use faker lib

import { Factory, CreateFactory } from "proposal-factory-decorator";
import faker from "faker";

class User {
  @Factory(() => faker.name.findName())
  name: string;

  @Factory(() => faker.internet.email())
  email: boolean;
}

const userFact = new CreateFactory() < User > User;

(async () => {
  const user = await userFact.generate(); // Creates a faker User

  console.log(user); // { name: "Some random name", email: "[email protected]" }
})();

Caution

The @Factory decorator only works with the CreateFactory class. If you try to do something like

class DontWork {
  @Factory(() => somevalue)
  field: any;
}

console.log(new DontWork()); // it will print this empty value {}

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Happy coding you all 🖥️🙇!