GQLBTypeScript-First GraphQL Query Builder

Build type-safe GraphQL queries with full IntelliSense support and zero runtime overhead

🛡️ Full Type Safety

Every query, mutation, and subscription is fully typed with TypeScript, ensuring compile-time safety and excellent developer experience.

⚡ Zero Runtime Cost

GQLB generates pure TypeScript interfaces with no runtime overhead. Your queries compile to standard GraphQL documents.

🎯 Schema-First

Generate type-safe builders directly from your GraphQL schema. Supports introspection, SDL files, and programmatic schemas.

🧩 Fragment Support

Create reusable fragments with full type checking. Both inline fragments and defined fragments are supported with proper typing.

🔄 Variables & Arguments

Type-safe variable definitions and field arguments. The compiler ensures your variables match your schema requirements.

📝 IntelliSense Ready

Rich autocompletion, hover documentation, and error highlighting. See field descriptions and deprecation warnings inline.

Quick Example

typescript

import { b } from './generated'

// Fully typed query with variables
const USER_QUERY = b.query('GetUser', { id: 'ID!' }, (b, v) => [
  b.user({ id: v.id }, b => [
    b.id(),
    b.name(),
    b.email(),
    b.posts(b => [
      b.id(),
      b.title(),
      b.publishedAt(),
    ])
  ])
])

// Type-safe output
type UserData = OutputOf<typeof USER_QUERY>
// Result:
// {
//   readonly user: {
//     readonly id: string
//     readonly name: string | null
//     readonly email: string
//     readonly posts: readonly {
//       readonly id: string
//       readonly title: string
//       readonly publishedAt: string | null
//     }[]
//   } | null
// }