understanding-stability-inference

What problem does it solve?

Explain why the Compose compiler classifies a class or composable parameter as stable, runtime, unknown, or unstable. It covers the 12-phase inference algorithm, the five stability types (Certain, Runtime, Unknown, Parameter, Combined), the bitmask encoding, and how runtime checks via the $stable field work across modules.

Core Features & Use Cases

• Explain the 12-phase stability inference algorithm and how each phase impacts the verdict.
• Decode the Known Stable Constructs registry (e.g., ImmutableList, Pair, Lazy) and bitmask semantics.
• Diagnose cross-module stability with @StabilityInferred and runtime checks, including how to read $stable.
• Provide guidance on common patterns that trigger Unknown, Runtime, or Combined classifications, and how to communicate results to developers.

Quick Start

Explain why a given type is classified as stable, runtime, unknown, or unstable by the Compose stability inference algorithm.