angular-rust-compiler

The Angular Rust Compiler is a native implementation of the Angular Ahead-of-Time (AOT) compiler, built in Rust. It provides a faster, more memory-efficient alternative to the standard TypeScript-based compiler (NGTSC) by statically compiling Angular templates, components, and directives into optimized JavaScript. This project aims to improve build performance for large Angular applications while maintaining full compatibility with Angular's Ivy compilation pipeline.

Key Features

• High-Performance Compilation — Delivers ~1.3x faster build times and lower memory usage compared to NGTSC by leveraging Rust's native execution.
• Full Angular Template Support — Parses and compiles modern Angular template syntax including @for, @if, @switch, property/event binding, and two-way binding.
• Signal Integration — Supports Angular's reactive signal APIs including input(), output(), signal(), and computed().
• Component & Directive Compilation — Handles @Component and @Directive decorators, metadata extraction, and emits standard ɵcmp/ɵdir definitions.
• Template Pipeline & Optimization — Implements a multi-phase IR generation and optimization pipeline for efficient code output.
• CSS Scoping & Style Handling — Processes inline styles, external stylesheets, and applies Angular's emulated view encapsulation.

Philosophy

The compiler is designed to be a drop-in replacement for the official Angular compiler, prioritizing performance and deterministic output while maintaining exact parity with NGTSC's generated code structure and behavior.