diff --git a/src/api/authenticated_api.ts b/src/api/authenticated_api.ts
index 457a4dd..a104128 100644
--- a/src/api/authenticated_api.ts
+++ b/src/api/authenticated_api.ts
@@ -25,7 +25,7 @@ class LocalStorageConfig {
 }
 
 export class AuthenticatedAPI extends BlueskyAPI {
-  user: json;
+  override user: json;
 
   constructor() {
     let config = new LocalStorageConfig();
@@ -128,7 +128,7 @@ export class AuthenticatedAPI extends BlueskyAPI {
     });
   }
 
-  resetTokens() {
+  override resetTokens() {
     delete this.user.avatar;
     super.resetTokens();
   }
diff --git a/src/api/identity.ts b/src/api/identity.ts
index e107483..c78c99c 100644
--- a/src/api/identity.ts
+++ b/src/api/identity.ts
@@ -28,7 +28,7 @@ export async function pdsEndpointForDID(did: string): Promise<string> {
   let json = text.trim().length > 0 ? JSON.parse(text) : undefined;
 
   if (response.status == 200) {
-    let service = (json.service || []).find(s => s.id == '#atproto_pds');
+    let service = (json.service || []).find((s: json) => s.id == '#atproto_pds');
 
     if (service) {
       return service.serviceEndpoint.replace('https://', '');
diff --git a/src/models/embeds.js b/src/models/embeds.js
index 5283310..66d3856 100644
--- a/src/models/embeds.js
+++ b/src/models/embeds.js
@@ -1,5 +1,5 @@
 import { ATProtoRecord } from './records.js';
-import { Post, PostDataError, parseViewRecord } from './posts.js';
+import { PostDataError, parseViewRecord } from './posts.js';
 
 /**
  * Base class for embed objects.
diff --git a/src/models/posts.js b/src/models/posts.js
index 23a3a36..6d6664a 100644
--- a/src/models/posts.js
+++ b/src/models/posts.js
@@ -183,6 +183,12 @@ export class Post extends BasePost {
    */
   pageRoot;
 
+  /**
+   * Post's direct replies (if it's displayed in a thread).
+   * @type {AnyPost[]}
+   */
+  replies;
+
   /**
    * Info about the author of the "grandparent" post. Included only in feedPost views, for the purposes
    * of feed filtering algorithm.
@@ -342,12 +348,6 @@ export class Post extends BasePost {
     return this.linkToAuthor + '/post/' + this.rkey;
   }
 
-  /** @returns {string} */
-  get didLinkToAuthor() {
-    let { repo } = atURI(this.uri);
-    return `https://bsky.app/profile/${repo}`;
-  }
-
   /** @returns {string} */
   get text() {
     return this.record.text;
diff --git a/src/services/lycan.ts b/src/services/lycan.ts
index 2a4129c..91445af 100644
--- a/src/services/lycan.ts
+++ b/src/services/lycan.ts
@@ -68,15 +68,15 @@ export class DevLycan extends Lycan {
     this.localLycan = new BlueskyAPI(host);
   }
 
-  async getImportStatus() {
+  override async getImportStatus() {
     return await this.localLycan.getRequest('blue.feeds.lycan.getImportStatus', { user: accountAPI.user.did });
   }
 
-  async startImport() {
+  override async startImport() {
     await this.localLycan.postRequest('blue.feeds.lycan.startImport', { user: accountAPI.user.did });
   }
 
-  async makeQuery(collection: string, query: string, cursor: string | undefined) {
+  override async makeQuery(collection: string, query: string, cursor: string | undefined) {
     let params: Record<string, string> = { collection, query, user: accountAPI.user.did };
     if (cursor) params.cursor = cursor;
 
diff --git a/tsconfig.json b/tsconfig.json
index 7e2b0e8..d5e0006 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,14 +1,24 @@
 {
   "compilerOptions": {
-    "target": "es2022",
-    "module": "nodenext",
-    "moduleResolution": "nodenext",
+    "target": "es2024",
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "moduleDetection": "force",
+    "isolatedModules": true,
+    "verbatimModuleSyntax": true,
     "noEmit": true,
     "checkJs": true,
     "strict": true,
-    "noImplicitAny": false,
+    "allowUnreachableCode": false,
+    "allowUnusedLabels": false,
     "exactOptionalPropertyTypes": true,
-    "useUnknownInCatchVariables": false
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitOverride": true,
+    "noImplicitReturns": true,
+    "noUncheckedSideEffectImports": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "useUnknownInCatchVariables": false,
   },
   "include": ["src/**/*.js", "src/**/*.ts", "lib/**/*.d.ts"]
 }