Add explicit index signature

#76442

src/vs/platform/state/node/stateService.ts

@@ -11,14 +11,16 @@ import { isUndefined, isUndefinedOrNull } from 'vs/base/common/types';
 import { IStateService } from 'vs/platform/state/common/state';
 import { ILogService } from 'vs/platform/log/common/log';
 
+type StorageDatebase = { [key: string]: any; };
+
 export class FileStorage {
 
-	private _database: object | null = null;
+	private _database: StorageDatebase | null = null;
 	private lastFlushedSerializedDatabase: string | null = null;
 
 	constructor(private dbPath: string, private onError: (error: Error) => void) { }
 
-	private get database(): object {
+	private get database(): StorageDatebase {
 		if (!this._database) {
 			this._database = this.loadSync();
 		}
@@ -40,7 +42,7 @@ export class FileStorage {
 		this._database = database;
 	}
 
-	private loadSync(): object {
+	private loadSync(): StorageDatebase {
 		try {
 			this.lastFlushedSerializedDatabase = fs.readFileSync(this.dbPath).toString();
 
@@ -54,7 +56,7 @@ export class FileStorage {
 		}
 	}
 
-	private async loadAsync(): Promise<object> {
+	private async loadAsync(): Promise<StorageDatebase> {
 		try {
 			this.lastFlushedSerializedDatabase = (await readFile(this.dbPath)).toString();