Faker.js: Generate array of N items

generator.js

// generator
const generator = (schema, min = 1, max) => {
  max = max || min;
  return Array.from({
    length: faker.random.number({
      min,
      max,
    }),
  }).map(() => {
    const innerGen = (anySchema) => Object.keys(anySchema).reduce((entity, key) => {
        if (
          Object.prototype.toString.call(anySchema[key]) === '[object Object]'
        ) {
          entity[key] = innerGen(anySchema[key]);
          return entity;
        }
        entity[key] = faker.fake(anySchema[key]);
        return entity;
      }, {});

    return innerGen(schema);
  });
};

// your schema
const clientsSchema = {
  id: '{{random.number}}',
  name: '{{company.companyName}} {{company.companySuffix}}',
  contact: {
    address: '{{address.streetAddress}}',
    phone: '{{phone.phoneNumber}}',
    email: '{{internet.email}}',
  },
};

// generate random clients between 2 and 5 units, based on client schema defined above
const data = generator(clientsSchema, 2, 5);

// data looks like this:
[
  {
    id: '92447',
    name: 'Wintheiser Group Group',
    contact: {
      address: '566 Leonardo Loop',
      phone: '025.415.9443 x5894',
      email: 'Esta36@gmail.com',
    },
  },
  {
    id: '42354',
    name: 'Larson Inc and Sons',
    contact: {
      address: '3089 Waelchi Keys',
      phone: '711.874.8437 x58199',
      email: 'Lloyd_Shanahan73@hotmail.com}',
    },
  },

  ...
];

This is brilliant!

Couple of things:

1. faker.random.number is deprecated in favor of faker.datatype.number

• this matters on line 5 and line 27

2. How can return integers instead of a string containing them?

• I'd like 500 instead of '500', for example

foo() {
   
   return faker.random.word().split('').map(() => ({
      id: faker.datatype.uuid(),
      type: faker.helpers.arrayElement(['bla', 'ble', 'bli']),
      name: faker.random.word(),
      position: {
         x: faker.random.numeric(3),
         y: faker.random.numeric(3)
      }
   }))
	
}

this way I'm faking an random array of object that I define inside map return. faker.random.word().split('') generates a random array :D

@brunoandradebr is this a different solution to the same problem or a refinement or something else?

Different solution with less code.

Thanks man!