[Web API type definition issue] Wasm64 Support #2485

Summary

WebAssembly.AddressValue should be number | bigint instead of number

Expected vs. Actual Behavior

There are a bunch of APIs relying on the type definition of WebAssembly.AddressValue:

• WebAssembly.Memory.grow()
• WebAssembly.Table.*
• `WebAssembly.MemoryDescriptor.*
• WebAssembly.TableDescriptor.*

With Wasm64 memory and tables can be 64-bit, requiring some of the parameters and properties to be bigint instead of number. Currently AddressValue is defines as number, but it should be number | bigint instead.

Maybe the API could be further improved with a separate table or memory type, in which the constructor with the help of WebAssembly.MemoryDescriptor or WebAssembly.TableDescriptor can determine which type we are dealing with.

Playground Link

No response

Browser Support

• This API is supported in at least two major browser engines (not two Chromium-based browsers).

Have Tried The Latest Releases

• This issue applies to the latest release of TypeScript.
• This issue applies to the latest release of @types/web.

Additional Context

This has been explicitly overwritten internally here.