diff --git a/src/index.ts b/src/index.ts
index f4c5a0b..ba22bdf 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -163,7 +163,7 @@ if (providerName?.toLowerCase() === "ollama") {
   console.error(`[agent] Using Ollama model "${modelId}" at ${ollamaBaseUrl}`);
 
 } else if (providerName && modelId) {
-  model = getModel(providerName as Parameters<typeof getModel>[0], modelId as any);
+  model = (getModel as (provider: string, model: string) => Model<any> | undefined)(providerName, modelId);
   if (!model) {
     console.error(
       `[agent] Model "${providerName}/${modelId}" not found. ` +
@@ -182,7 +182,8 @@ if (providerName?.toLowerCase() === "ollama") {
 
 // ─── tools ──────────────────────────────────────────────────────────────────
 
-const toolMap: Record<string, (typeof readTool)> = {
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const toolMap: Record<string, any> = {
   read:  readTool,
   bash:  bashTool,
   edit:  editTool,
@@ -224,7 +225,7 @@ let resourceLoader: DefaultResourceLoader | undefined;
 
 if (systemPrompt !== undefined || appendPrompt !== undefined) {
   resourceLoader = new DefaultResourceLoader({
-    systemPromptOverride: (base: string) => {
+    systemPromptOverride: (base: string | undefined) => {
       let result = systemPrompt !== undefined ? systemPrompt : base;
       if (appendPrompt) {
         result = result ? `${result}\n\n${appendPrompt}` : appendPrompt;
diff --git a/tsconfig.json b/tsconfig.json
index e81d88c..b483a51 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,7 +12,8 @@
     "resolveJsonModule": true,
     "declaration": true,
     "declarationMap": true,
-    "sourceMap": true
+    "sourceMap": true,
+    "types": ["node"]
   },
   "include": ["src"],
   "exclude": ["node_modules", "dist"]