Blitz.js is a full-stack React framework built on Next.js, designed to accelerate web application development. It provides a seamless, zero-API data layer and includes everything you need to build scalable, production-ready applications with React.

Pros

• Zero-API data layer, eliminating the need for manual API creation and management
• Built-in authentication and authorization system
• Automatic code splitting and optimized performance
• Strong conventions and best practices for scalable application architecture

Cons

• Steeper learning curve compared to plain React or Next.js
• Less flexibility in some areas due to opinionated structure
• Smaller community and ecosystem compared to more established frameworks
• May be overkill for simple projects or static websites

Code Examples

1. Defining a model and query:

// app/products/queries/getProduct.ts
import { resolver } from "blitz"
import db from "db"

export default resolver.pipe(
  resolver.zod(z.object({ id: z.number() })),
  async ({ id }) => {
    const product = await db.product.findFirst({ where: { id } })
    return product
  }
)

2. Using the query in a React component:

// app/products/pages/[id].tsx
import { useQuery, useParam } from "blitz"
import getProduct from "app/products/queries/getProduct"

export default function Product() {
  const id = useParam("id", "number")
  const [product] = useQuery(getProduct, { id })

  return (
    <div>
      <h1>{product.name}</h1>
      <p>{product.description}</p>
    </div>
  )
}

3. Defining and using a mutation:

// app/products/mutations/createProduct.ts
import { resolver } from "blitz"
import db from "db"

export default resolver.pipe(
  resolver.zod(z.object({ name: z.string(), price: z.number() })),
  async (input) => {
    const product = await db.product.create({ data: input })
    return product
  }
)

// Using the mutation in a component
import { useMutation } from "blitz"
import createProduct from "app/products/mutations/createProduct"

export default function CreateProductForm() {
  const [createProductMutation] = useMutation(createProduct)

  return (
    <form
      onSubmit={async (event) => {
        event.preventDefault()
        const product = await createProductMutation({ name: "New Product", price: 9.99 })
        console.log(product)
      }}
    >
      {/* Form fields */}
    </form>
  )
}

Getting Started

To create a new Blitz.js project, run the following commands:

npm install -g blitz
blitz new my-blitz-app
cd my-blitz-app
blitz dev

This will create a new Blitz.js project and start the development server. You can then open your browser and navigate to http://localhost:3000 to see your new Blitz.js application running.