feat(typert): propagate Remote cancellation

packages/typert/registry/src/service.ts

@@ -562,6 +562,9 @@ function validateInvocation(descriptor: InvocationDescriptor): void {
     }
     validateCodec(parameter.codec, `${descriptor.id} parameter ${parameter.name}`)
   }
+  if (descriptor.cancellation !== undefined && descriptor.cancellation.parameter !== 'signal') {
+    throw new Error(`typert: invocation "${descriptor.id}" cancellation parameter must be "signal"`)
+  }
   if (descriptor.scope !== undefined) {
     if (descriptor.invocation.kind !== 'direct') {
       throw new Error(`typert: invocation "${descriptor.id}" Context receiver cannot declare a direct scope projection`)

packages/typert/registry/tests/typert.spec.ts

@@ -411,6 +411,7 @@ describe('TypertRegistry', () => {
       ...invocation('@fixture/remote#strict'),
       implementation: 'remoteExportCreate',
       parameters: [{ name: 'request', wire: 'request', source: 'json', codec: strict }],
+      cancellation: { parameter: 'signal' },
       result: strict,
     }
     const dispose = ctx.typert.remotes.register({ package: '@fixture/strict', descriptors: [strictInvocation] })
@@ -420,6 +421,10 @@ describe('TypertRegistry', () => {
       [{ ...invocation(), id: '' }, 'invocation id'],
       [{ ...invocation(), namespace: 'bad/name' }, 'namespace'],
       [{ ...invocation(), implementation: 'bad/name' }, 'implementation method'],
+      [{
+        ...invocation(),
+        cancellation: { parameter: 'abort' } as unknown as { readonly parameter: 'signal' },
+      }, 'cancellation parameter'],
       [{
         ...invocation(),
         parameters: [