# facet-types
[](https://github.com/fasterthanlime/facet)
[](https://github.com/fasterthanlime/free-of-syn)
[](https://crates.io/crates/facet-types)
[](https://docs.rs/facet-types)
[](./LICENSE)
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Defines the core types used throughout the facet ecosystem for runtime reflection:
* `Shape`: The central type that describes the memory layout and capabilities of a type
* Various vtables that define how to manipulate types at runtime
* The `Def` tree, which describes type definitions (structs, enums, etc.)
This crate is foundational to facet's reflection capabilities, providing the type system that enables safe runtime type manipulation.
### Key Components
* Memory layout information (size, alignment, etc.)
* Type definition hierarchies
* Runtime type manipulation vtables
* Safe type erasure primitives
## License
Licensed under either of:
- Apache License, Version 2.0 ([LICENSE-APACHE](https://github.com/facet-rs/facet/blob/main/LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT license ([LICENSE-MIT](https://github.com/facet-rs/facet/blob/main/LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
at your option.