fix: map core types in succinct method return types

Succinct methods (eg. `Delete(Req) => (ok: bool)`) emitted raw RIDL
type names like `bool` instead of mapped TypeScript types like
`boolean`. The templates used `{{(index $method.Outputs 0).Type}}`
which renders via Go's Stringer, bypassing the $typeMap.

Fix: use `{{template "type" ...}}` (which resolves through $typeMap)
for succinct output types in clientInterface, client, and
serverInterface templates. Also handle the void case (no outputs)
for succinct methods in clientInterface and serverInterface.

Author: klaidliadon

client.go.tmpl

@@ -46,7 +46,12 @@ export class {{$service.Name}} implements {{$service.Name}}Client {
   {{- $methodRespName := "" -}}
   {{- if $method.Succinct -}}
     {{- $methodReqName = (index $method.Inputs 0).Type -}}
-    {{- $methodRespName = (index $method.Outputs 0).Type -}}
+    {{- if gt (len $method.Outputs) 0 -}}
+      {{- $methodRespName = (index $method.Outputs 0).Type -}}
+      {{- if isCoreType (index $method.Outputs 0).Type -}}
+        {{- $methodRespName = get $typeMap (index $method.Outputs 0).Type -}}
+      {{- end -}}
+    {{- end -}}
   {{- else -}}
     {{- if $opts.compat -}}
       {{- $methodReqName = printf "%sArgs" $method.Name -}}
@@ -56,7 +61,7 @@ export class {{$service.Name}} implements {{$service.Name}}Client {
       {{- $methodRespName = printf "%sResponse" $method.Name -}}
     {{- end -}}
   {{- end}}
-  {{firstLetterToLower .Name}} = ({{template "methodInputs" dict "Method" . "Opts" $opts "TypeMap" $typeMap}}): {{if $method.StreamOutput}}WebrpcStreamController{{else}}{{if $method.Succinct}}Promise<{{(index $method.Outputs 0).Type}}>{{else}}Promise<{{$method.Name}}{{if $opts.compat}}Return{{else}}Response{{end}}>{{end}}{{end}} => {
+  {{firstLetterToLower .Name}} = ({{template "methodInputs" dict "Method" . "Opts" $opts "TypeMap" $typeMap}}): {{if $method.StreamOutput}}WebrpcStreamController{{else}}{{if and $method.Succinct (gt (len $method.Outputs) 0)}}Promise<{{template "type" dict "Type" (index $method.Outputs 0).Type "TypeMap" $typeMap}}>{{else if $method.Succinct}}Promise<void>{{else}}Promise<{{$method.Name}}{{if $opts.compat}}Return{{else}}Response{{end}}>{{end}}{{end}} => {
   {{- if $method.StreamOutput }}
     const abortController = new AbortController()
     const abortSignal = abortController.signal

clientInterface.go.tmpl

@@ -28,7 +28,7 @@ export interface {{$service.Name}}Client {
    * @deprecated {{ $deprecated.Value }}
    */
   {{- end }}
-  {{firstLetterToLower $method.Name}}({{template "methodInputs" dict "Method" $method "TypeMap" $typeMap "Opts" $opts}}): {{if $method.StreamOutput}}WebrpcStreamController{{else}}{{if $method.Succinct}}Promise<{{(index $method.Outputs 0).Type}}>{{else}}Promise<{{$method.Name}}{{if $opts.compat}}Return{{else}}Response{{end}}>{{end}}{{end}}
+  {{firstLetterToLower $method.Name}}({{template "methodInputs" dict "Method" $method "TypeMap" $typeMap "Opts" $opts}}): {{if $method.StreamOutput}}WebrpcStreamController{{else}}{{if and $method.Succinct (gt (len $method.Outputs) 0)}}Promise<{{template "type" dict "Type" (index $method.Outputs 0).Type "TypeMap" $typeMap}}>{{else if $method.Succinct}}Promise<void>{{else}}Promise<{{$method.Name}}{{if $opts.compat}}Return{{else}}Response{{end}}>{{end}}{{end}}
   {{- if lt (add $i 1) (len $service.Methods)}}{{"\n"}}{{end}}
 {{- end}}
 }

serverInterface.go.tmpl

@@ -13,7 +13,7 @@
 export interface {{$service.Name}}Server<Context = unknown> {
   {{- range $_, $method := $service.Methods}}
   {{- if $method.Succinct }}
-  {{firstLetterToLower $method.Name}}(ctx: Context, req: {{(index $method.Inputs 0).Type}}): Promise<{{(index $method.Outputs 0).Type}}>
+  {{firstLetterToLower $method.Name}}(ctx: Context, req: {{(index $method.Inputs 0).Type}}): Promise<{{if gt (len $method.Outputs) 0}}{{template "type" dict "Type" (index $method.Outputs 0).Type "TypeMap" $typeMap}}{{else}}void{{end}}>
   {{- else}}
   {{- if $opts.compat }}
   {{firstLetterToLower $method.Name}}(ctx: Context, req: {{$method.Name}}Args): Promise<{{$method.Name}}Return>