WebAssembly Interface Types

The Squared IDL can be directly mapped to WebAssembly interface types, for the most part:

• Primitive types map directly to WIT primitive types.
• Collection types map to WIT lists:
  • A Rust Vec<T> or HashSet<T> maps to a WIT list<T>.
  • A Rust HashMap<K, V> maps to a WIT list<tuple<K, V>>.
• Public structs/enums are mapped to WIT records, variants, and enums as appropriate:
  • A struct is mapped to a WIT record.
  • Enums are mapped to WIT enums when possible, else WIT variants.
• Instances of the class pattern are mapped to WIT resource types:
  • The methods can be mapped directly.