diff --git a/modern/src/runtime/Component.ts b/modern/src/runtime/Component.ts
index ad69101a..8ba17f30 100644
--- a/modern/src/runtime/Component.ts
+++ b/modern/src/runtime/Component.ts
@@ -1,5 +1,8 @@
 import GuiObject from "./GuiObject";
 import { unimplementedWarning } from "../utils";
+import Wac from "./Wac";
+import MakiMap from "./Map";
+import Region from "./Region";
 
 class Component extends GuiObject {
   /**
@@ -12,11 +15,11 @@ class Component extends GuiObject {
     return "Component";
   }
 
-  ongetwac(wacobj): void {
+  ongetwac(wacobj: Wac): void {
     this.js_trigger("onGetWac", wacobj);
   }
 
-  ongiveupwac(wacobj): void {
+  ongiveupwac(wacobj: Wac): void {
     this.js_trigger("onGiveUpWac", wacobj);
   }
 
@@ -30,12 +33,12 @@ class Component extends GuiObject {
     return;
   }
 
-  setregionfrommap(regionmap, threshold: number, reverse: boolean) {
+  setregionfrommap(regionmap: MakiMap, threshold: number, reverse: boolean) {
     unimplementedWarning("setregionfrommap");
     return;
   }
 
-  setregion(reg) {
+  setregion(reg: Region) {
     unimplementedWarning("setregion");
     return;
   }
diff --git a/modern/src/runtime/Region.ts b/modern/src/runtime/Region.ts
index d9fcd42a..eb9e80a7 100644
--- a/modern/src/runtime/Region.ts
+++ b/modern/src/runtime/Region.ts
@@ -1,5 +1,6 @@
 import MakiObject from "./MakiObject";
 import { unimplementedWarning } from "../utils";
+import MakiMap from "./Map";
 
 class Region extends MakiObject {
   /**
@@ -12,7 +13,7 @@ class Region extends MakiObject {
     return "Region";
   }
 
-  loadfrommap(regionmap, threshold: number, reversed: boolean) {
+  loadfrommap(regionmap: MakiMap, threshold: number, reversed: boolean) {
     unimplementedWarning("loadFromMap");
   }
 
@@ -20,12 +21,12 @@ class Region extends MakiObject {
     unimplementedWarning("offset");
   }
 
-  add(reg) {
+  add(reg: Region) {
     unimplementedWarning("add");
     return;
   }
 
-  sub(reg) {
+  sub(reg: Region) {
     unimplementedWarning("sub");
     return;
   }
@@ -35,7 +36,7 @@ class Region extends MakiObject {
     return;
   }
 
-  copy(reg) {
+  copy(reg: Region) {
     unimplementedWarning("copy");
     return;
   }
diff --git a/modern/src/runtime/Wac.ts b/modern/src/runtime/Wac.ts
index 0675c8cc..bc49ba55 100644
--- a/modern/src/runtime/Wac.ts
+++ b/modern/src/runtime/Wac.ts
@@ -42,6 +42,9 @@ class Wac extends MakiObject {
     return;
   }
 
+  // @ts-ignore This (deprecated) method's signature does not quite match the
+  // same method on MakiObject. This method is not used by any skins as far as
+  // we know, so we'll just ignore the issue for now.
   onnotify(notifstr: string, a: number, b: number): void {
     this.js_trigger("onNotify", notifstr, a, b);
   }
diff --git a/tsconfig.json b/tsconfig.json
index ce9f6eef..0f830015 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -24,7 +24,12 @@
     "modern/src/runtime/Group.ts",
     "modern/src/runtime/Timer.ts",
     "modern/src/runtime/Config.ts",
-    "modern/src/runtime/ConfigItem.ts"
+    "modern/src/runtime/ConfigItem.ts",
+    "modern/src/runtime/Component.ts",
+    "modern/src/runtime/Browser.ts",
+    "modern/src/runtime/Wac.ts",
+    "modern/src/runtime/Map.ts",
+    "modern/src/runtime/Region.ts"
   ],
   "exclude": ["node_modules", "**/*.spec.ts", "demo/built"]
 }