Fix persistence provider types

frontend/sync-client/src/persistence/database.ts

@@ -11,7 +11,7 @@ export interface DocumentMetadata {
 import type { Logger } from "src/tracing/logger";
 
 export interface StoredDatabase {
-	documents: Map<RelativePath, DocumentMetadata>;
+	documents: Record<RelativePath, DocumentMetadata>;
 	lastSeenUpdateId: VaultUpdateId | undefined;
 }
 
@@ -22,15 +22,14 @@ export class Database {
 	public constructor(
 		private readonly logger: Logger,
 		initialState: Partial<StoredDatabase> | undefined,
-		private readonly saveData: (data: unknown) => Promise<void>
+		private readonly saveData: (data: StoredDatabase) => Promise<void>
 	) {
 		initialState ??= {};
 		if (initialState.documents) {
 			for (const [relativePath, metadata] of Object.entries(
 				initialState.documents
 			)) {
-				// eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
-				this.documents.set(relativePath, metadata as DocumentMetadata);
+				this.documents.set(relativePath, metadata);
 			}
 		}
 		this.logger.debug(`Loaded ${this.documents.size} documents`);

frontend/sync-client/src/persistence/persistence.ts

@@ -1,4 +1,4 @@
-export interface PersistenceProvider {
-	load: () => Promise<unknown>;
-	save: (data: unknown) => Promise<void>;
+export interface PersistenceProvider<T extends object> {
+	load: () => Promise<T | undefined>;
+	save: (data: T | undefined) => Promise<void>;
 }

frontend/sync-client/src/persistence/settings.ts

@@ -36,7 +36,7 @@ export class Settings {
 	public constructor(
 		private readonly logger: Logger,
 		initialState: Partial<SyncSettings> | undefined,
-		private readonly saveData: (data: unknown) => Promise<void>
+		private readonly saveData: (data: SyncSettings) => Promise<void>
 	) {
 		this.settings = {
 			...DEFAULT_SETTINGS,

frontend/sync-client/src/sync-client.ts

@@ -3,7 +3,9 @@ import wasmBin from "sync_lib/sync_lib_bg.wasm";
 import type { PersistenceProvider } from "./persistence/persistence";
 import { SyncHistory } from "./tracing/sync-history";
 import { Logger } from "./tracing/logger";
+import type { StoredDatabase } from "./persistence/database";
 import { Database } from "./persistence/database";
+import type { SyncSettings } from "./persistence/settings";
 import { Settings } from "./persistence/settings";
 import type { CheckConnectionResult } from "./services/sync-service";
 import { SyncService } from "./services/sync-service";
@@ -45,7 +47,12 @@ export class SyncClient {
 
 	public static async create(
 		fs: FileSystemOperations,
-		persistence: PersistenceProvider
+		persistence: PersistenceProvider<
+			Partial<{
+				settings: Partial<SyncSettings>;
+				database: Partial<StoredDatabase>;
+			}>
+		>
 	): Promise<SyncClient> {
 		const logger = new Logger();
 		const history = new SyncHistory(logger);
@@ -56,17 +63,14 @@ export class SyncClient {
 			(wasmBin as any).default // it is loaded as a base64 string by webpack
 		);
 
-		let state: Partial<{
-			settings: any;
-			database: any;
-		}> = (await persistence.load()) ?? {
+		let state = (await persistence.load()) ?? {
 			settings: undefined,
 			database: undefined
 		};
 		const database = new Database(
 			logger,
 			state.database,
-			async (data: unknown): Promise<void> => {
+			async (data): Promise<void> => {
 				state = { ...state, database: data };
 				return persistence.save(state);
 			}
@@ -75,7 +79,7 @@ export class SyncClient {
 		const settings = new Settings(
 			logger,
 			state.settings,
-			async (data: unknown): Promise<void> => {
+			async (data): Promise<void> => {
 				state = { ...state, settings: data };
 				return persistence.save(state);
 			}