# Intro # system - mariadb # dev ```bash $ npm install @apollo/server graphql mariadb reflect-metadata sequelize sequelize-typescript $ npm install @types/node @types/validator typescript ``` # tsconfig ```json { "compilerOptions": { "target": "es2020", "lib": ["es2020"], "module": "esnext", "moduleResolution": "node", "rootDirs": ["src"], "types": ["node"], "outDir": "dist", "esModuleInterop": true, "forceConsistentCasingInFileNames": true, "strict": true, "skipLibCheck": true } } ```