{
  "name": "nest-typescript-starter",
  "version": "1.0.0",
  "description": "Nest TypeScript starter repository",
  "license": "MIT",
  "scripts": {
    "build": "tsc -p tsconfig.build.json",
    "start": "ts-node src/main",
    "prestart:prod": "npm run build",
    "start:prod": "node dist/main.js"
  },
  "dependencies": {
    "@nestjs/common": "6.0.1",
    "@nestjs/core": "6.0.1",
    "@nestjs/platform-express": "6.0.1",
    "mysql2": "1.6.5",
    "reflect-metadata": "0.1.13",
    "rxjs": "6.4.0",
    "sequelize": "4.43.0",
    "sequelize-typescript": "0.6.8",
    "typescript": "3.3.3333"
  },
  "devDependencies": {
    "@types/node": "10.14.1",
    "@types/sequelize": "4.27.44",
    "ts-node": "8.0.3",
    "tslint": "5.14.0"
  }
}

{
  "name": "nest-typescript-starter",
  "version": "1.0.0",
  "description": "Nest TypeScript starter repository",
  "license": "MIT",
  "scripts": {
    "build": "tsc -p tsconfig.build.json",
    "start": "ts-node src/main",
    "prestart:prod": "npm run build",
    "start:prod": "node dist/main.js"
  },
  "dependencies": {
    "@nestjs/common": "6.0.1",
    "@nestjs/core": "6.0.1",
    "@nestjs/platform-express": "6.0.1",
    "mysql2": "1.6.5",
    "reflect-metadata": "0.1.13",
    "rxjs": "6.4.0",
    "sequelize": "5.1.0",
    "sequelize-typescript": "0.6.8",
    "typescript": "3.3.3333"
  },
  "devDependencies": {
    "@types/node": "10.14.1",
    "@types/sequelize": "4.27.44",
    "ts-node": "8.0.3",
    "tslint": "5.14.0"
  }
}

Update dependency sequelize to v5
Update dependency sequelize to v5