How to generate unique numbers in Faker js?

Question

Node.js

I tried a lot, I can’t generate random id and unique from 1 to 2

For example
1 1
1 2
2 1
2 2

Git Sample

faker.random.number({ min: 1, max: 7 })
faker.unique(faker.datatype.number)

import { PrismaClient, Prisma } from '@prisma/client';

const prisma = new PrismaClient();

//import faker from 'faker';
const faker = require('faker');

async function main() {
  console.log(`Start seeding ...`);
  for (let i = 0; i < 7; i++) {
    const user = await prisma.user.create({
      data: {
        email: faker.unique(faker.internet.email),
        firstName: faker.name.firstName(),
        lastName: faker.name.lastName(),
        avatar: faker.image.avatar(),
        posts: {
          create: [
            {
              title: faker.name.title(),
              content: faker.lorem.text(),
            },
          ],
        },
        images: {
          create: [
            {
              imagePuth: faker.image.image(),
              postId: faker.datatype.number({ min: 1, max: 7 }), //error Foreign key constraint failed on the field: `postId`
             postId: 1,3,2,5,6,7,4
            },
          ],
        },
      },
    });
    console.log(`Created user with id: ${user.id}`);
  }
  console.log(`Seeding finished.`);
}

main()
  .catch((e) => {
    console.error(e);
    process.exit(1);
  })
  .finally(async () => {
    await prisma.$disconnect();
  });

Constant error

import faker from 'faker';  //Ошибка
const faker = require('faker'); //Если так то автокомплит в ts не работает 

"@types/faker": "^5.5.9",
"faker": "^5.5.3",

"devDependencies": {
    "@nestjs/cli": "^8.0.0",
    "@nestjs/schematics": "^8.0.0",
    "@nestjs/testing": "^8.0.0",
    "@types/express": "^4.17.13",
    "@types/faker": "^5.5.9",
    "@types/jest": "^27.0.1",
    "@types/node": "^16.0.0",
    "@types/supertest": "^2.0.11",
    "@typescript-eslint/eslint-plugin": "^4.28.2",
    "@typescript-eslint/parser": "^4.28.2",
    "eslint": "^7.30.0",
    "eslint-config-prettier": "^8.3.0",
    "eslint-plugin-prettier": "^3.4.0",
    "faker": "^5.5.3",
    "jest": "^27.0.6",
    "prettier": "^2.3.2",
    "prisma": "^3.3.0",
    "supertest": "^6.1.3",
    "ts-jest": "^27.0.3",
    "ts-loader": "^9.2.3",
    "ts-node": "^10.0.0",
    "tsconfig-paths": "^3.10.1",
    "typescript": "^4.3.5"
  },

An error occured while running the seed command:
Error: Command failed with exit code 1: ts-node prisma/seed.ts
PS Z:\spa\app> npx prisma db seed
Environment variables loaded from .env
Running seed command `ts-node prisma/seed.ts` ...
Start seeding ...
TypeError: Cannot read property 'unique' of undefined
    at main (Z:\spa\app\prisma\seed.ts:121:22)
    at Object.<anonymous> (Z:\spa\app\prisma\seed.ts:142:1)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Module.m._compile (Z:\spa\app\node_modules\ts-node\src\index.ts:1371:23)
    at Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Object.require.extensions.<computed> [as .ts] (Z:\spa\app\node_modules\ts-node\src\index.ts:1374:12)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:12)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)
    at main (Z:\spa\app\node_modules\ts-node\src\bin.ts:331:12)

An error occured while running the seed command:
Error: Command failed with exit code 1: ts-node prisma/seed.ts