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Technology choices and architectural constraints for AG Grid. Use when choosing technologies, adding dependencies, or understanding zero-dependency requirements.

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Technology Stack

This document outlines the technology choices and constraints for the AG Grid codebase.

Core Principles

Zero Runtime Dependencies

The main AG Grid libraries (ag-grid-community, ag-grid-enterprise) must have ZERO third-party runtime dependencies. This ensures:

  • Minimal bundle size for end users
  • No dependency conflicts
  • Complete control over behaviour
  • Predictable performance characteristics

Framework Agnostic Core

The core grid logic is framework-agnostic. Framework-specific wrappers (ag-grid-react, ag-grid-angular, ag-grid-vue3) provide integrations while the core remains pure TypeScript.

Build System

  • Nx: Monorepo orchestration and build caching
  • Yarn: Package management (v1.x)
  • TypeScript: Strict mode enabled across all packages
  • ESBuild/Rollup: Bundle generation

Runtime Technologies

Rendering

  • Virtual DOM: Custom high-performance rendering engine
  • CSS-in-JS: Avoided - use CSS modules and traditional stylesheets
  • Canvas: Used only for specific features (e.g., sparklines)

State Management

  • Custom internal state management - no external libraries

Testing Technologies

  • Vitest: Unit, integration, and behavioural testing (testing/angular-tests still uses Jest)
  • Playwright: E2E testing, and the default engine for behavioural benchmarks (./benches.sh)
  • jsdom: DOM simulation for unit tests

Code Style

  • ESLint: Linting with custom rules
  • Prettier: Code formatting (via yarn nx format --sort-root-tsconfig-paths=false)
  • TypeScript Strict Mode: Enforced across all packages

Browser Support

  • Modern browsers only (ES2020 target)
  • No IE11 support
  • See browserslist configuration for specifics

Documentation

  • Astro: Static site generation for documentation
  • MDX/Markdoc: Documentation content format