refactor: improve type safety with stricter typing

Replace `any` with `unknown` in Logger interface and use type guard
for object checks in cursor-event-mapper. Export CachedToolUse type
for reuse in cursor-acp-agent.

Author: raphaelluethy

src/cursor-acp-agent.ts

@@ -32,7 +32,7 @@ import { randomUUID } from "node:crypto";
 import packageJson from "../package.json" with { type: "json" };
 import { CursorCliRunner } from "./cursor-cli-runner.js";
 import { CursorAuth, CursorAuthClient } from "./auth.js";
-import { mapCursorEventToAcp, RejectedToolCall } from "./cursor-event-mapper.js";
+import { CachedToolUse, mapCursorEventToAcp, RejectedToolCall } from "./cursor-event-mapper.js";
 import {
 	availableSlashCommands,
 	CustomSlashCommand,
@@ -567,7 +567,7 @@ export class CursorAcpAgent implements Agent {
 		forceRetry: boolean,
 	): Promise<PromptAttemptResult> {
 		const rejectedToolCalls: RejectedToolCall[] = [];
-		const toolUseCache: Record<string, { toolCallId: string; payload: any }> = {};
+		const toolUseCache: Record<string, CachedToolUse> = {};
 		const modeSettings = this.modeToRunnerOptions(session, forceRetry);
 		const assistantTextChunks: string[] = [];
 

src/cursor-event-mapper.ts

@@ -11,7 +11,7 @@ import {
 	toolUpdateFromCursorToolResult,
 } from "./tools.js";
 
-interface CachedToolUse {
+export interface CachedToolUse {
 	toolCallId: string;
 	payload: CursorToolPayload;
 }
@@ -63,10 +63,10 @@ function formatShellToolResponse(
 
 function assistantTextChunks(event: CursorStreamEvent): string[] {
 	const message = event.message;
-	if (!message || typeof message !== "object") {
+	if (!isObject(message)) {
 		return [];
 	}
-	const content = (message as any).content;
+	const content = message.content;
 	if (!Array.isArray(content)) {
 		return [];
 	}

src/utils.ts

@@ -2,10 +2,10 @@ import { Readable, Writable } from "node:stream";
 import { WritableStream, ReadableStream } from "node:stream/web";
 
 export interface Logger {
-	log: (...args: any[]) => void;
-	error: (...args: any[]) => void;
-	warn?: (...args: any[]) => void;
-	info?: (...args: any[]) => void;
+	log: (...args: unknown[]) => void;
+	error: (...args: unknown[]) => void;
+	warn?: (...args: unknown[]) => void;
+	info?: (...args: unknown[]) => void;
 }
 
 export function nodeToWebWritable(nodeStream: Writable): WritableStream<Uint8Array> {