fix: Missing type

Author: CGNonofr

src/extensions.ts

@@ -4,7 +4,7 @@ import {
   ServerCapabilities, DocumentSelector, MonacoLanguageClient, Services,
   TextDocumentSyncOptions, TextDocument, DidSaveTextDocumentNotification, Emitter, DisposableCollection
 } from 'monaco-languageclient'
-import { StaticFeature, FeatureState } from 'vscode-languageclient'
+import { StaticFeature, FeatureState, ProtocolRequestType } from 'vscode-languageclient'
 import { updateFile, willShutdownNotificationType, WillShutdownParams } from './customRequests'
 import { Infrastructure } from './infrastructure'
 import { LanguageClient, LanguageClientManager } from './languageClient'
@@ -57,6 +57,7 @@ export class InitializeTextDocumentFeature implements StaticFeature {
   }
 }
 
+export const ResolveCobolSubroutineRequestType = new ProtocolRequestType<string, string, never, void, void>('cobol/resolveSubroutine')
 class CobolResolveSubroutineFeature implements StaticFeature {
   private onRequestDisposable: Disposable | undefined
   constructor (private languageClient: MonacoLanguageClient) {
@@ -65,7 +66,7 @@ class CobolResolveSubroutineFeature implements StaticFeature {
   fillClientCapabilities (): void {}
 
   initialize (capabilities: ServerCapabilities, documentSelector: DocumentSelector): void {
-    this.onRequestDisposable = this.languageClient.onRequest('cobol/resolveSubroutine', (routineName: string) => {
+    this.onRequestDisposable = this.languageClient.onRequest(ResolveCobolSubroutineRequestType, (routineName: string) => {
       const constantRoutinePaths: Partial<Record<string, string>> = {
         'assert-equals': `${Services.get().workspace.rootUri ?? 'file:/tmp/project'}/deps/assert-equals.cbl`
       }