Some cleanup

- Use whateverEmitter.event for the onWhatever methods.
- Add readonly to a bunch of things.
- Remove some redundancy in types.
- Move initializations out of the constructor and into the declarations
  where it was reasonable to do so.
- Disable a few no-any violations.

packages/server/src/vscode/sharedProcess.ts

@@ -26,20 +26,16 @@ export class SharedProcess {
 	private _state: SharedProcessState = SharedProcessState.Stopped;
 	private activeProcess: ChildProcess | undefined;
 	private ipcHandler: StdioIpcHandler | undefined;
-	private readonly onStateEmitter: Emitter<SharedProcessEvent>;
+	private readonly onStateEmitter = new Emitter<SharedProcessEvent>();
+	public readonly onState = this.onStateEmitter.event;
 
 	public constructor(
 		private readonly userDataDir: string,
 		private readonly builtInExtensionsDir: string,
 	) {
-		this.onStateEmitter = new Emitter();
 		this.restart();
 	}
 
-	public get onState(): Event<SharedProcessEvent> {
-		return this.onStateEmitter.event;
-	}
-
 	public get state(): SharedProcessState {
 		return this._state;
 	}