Implement @since and @unstable attributes #94

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1. ctaggart commented on Nov 30, 2024

   

   ctaggart

   on Nov 30, 2024

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   A lot of the standard WIT definitions have @since added, so wac targets does not currently work with them.

   They have been added for at least 6 months:
   https://github.com/WebAssembly/wasi-cli/blame/main/wit/command.wit

   example error:

   ~/ms/StarlingMonkey15/typescript> wac targets --world typescript-system --wit wit ../typescript-system/target/wasm32-wasip1/debug/typescript_system.wasm
   error: failed to parse dependency directory: wit/deps
   
   Caused by:
       0: failed to parse package: wit/deps/wasi-cli-0.2.2
       1: expected `world`, `interface` or `use`, found `@`
               --> wit/deps/wasi-cli-0.2.2/package.wit:3:1
                |
              3 | @since(version = 0.2.0)
                | ^