6 files changed, 18 insertions, 13 deletions
diff --git a/ext/js/comm/api.js b/ext/js/comm/api.js
index 0cfdba59..26218595 100644
--- a/ext/js/comm/api.js
+++ b/ext/js/comm/api.js
@@ -431,7 +431,7 @@ export class API {
      */
     _createActionPort(timeout) {
         return new Promise((resolve, reject) => {
-            /** @type {?number} */
+            /** @type {?import('core').Timeout} */
             let timer = null;
             const portDetails = deferPromise();
 
diff --git a/ext/js/comm/clipboard-monitor.js b/ext/js/comm/clipboard-monitor.js
index 06e95438..3b3a56a9 100644
--- a/ext/js/comm/clipboard-monitor.js
+++ b/ext/js/comm/clipboard-monitor.js
@@ -31,7 +31,7 @@ export class ClipboardMonitor extends EventDispatcher {
         this._japaneseUtil = japaneseUtil;
         /** @type {import('clipboard-monitor').ClipboardReaderLike} */
         this._clipboardReader = clipboardReader;
-        /** @type {?number} */
+        /** @type {?import('core').Timeout} */
         this._timerId = null;
         /** @type {?import('core').TokenObject} */
         this._timerToken = null;
diff --git a/ext/js/comm/cross-frame-api.js b/ext/js/comm/cross-frame-api.js
index 34f3f36a..3ac38cf2 100644
--- a/ext/js/comm/cross-frame-api.js
+++ b/ext/js/comm/cross-frame-api.js
@@ -25,14 +25,14 @@ import {yomitan} from '../yomitan.js';
  */
 class CrossFrameAPIPort extends EventDispatcher {
     /**
-     * @param {?number} otherTabId
+     * @param {number} otherTabId
      * @param {number} otherFrameId
      * @param {chrome.runtime.Port} port
      * @param {import('core').MessageHandlerMap} messageHandlers
      */
     constructor(otherTabId, otherFrameId, port, messageHandlers) {
         super();
-        /** @type {?number} */
+        /** @type {number} */
         this._otherTabId = otherTabId;
         /** @type {number} */
         this._otherFrameId = otherFrameId;
@@ -48,7 +48,7 @@ class CrossFrameAPIPort extends EventDispatcher {
         this._eventListeners = new EventListenerCollection();
     }
 
-    /** @type {?number} */
+    /** @type {number} */
     get otherTabId() {
         return this._otherTabId;
     }
@@ -299,7 +299,7 @@ export class CrossFrameAPI {
         this._ackTimeout = 3000; // 3 seconds
         /** @type {number} */
         this._responseTimeout = 10000; // 10 seconds
-        /** @type {Map<?number, Map<number, CrossFrameAPIPort>>} */
+        /** @type {Map<number, Map<number, CrossFrameAPIPort>>} */
         this._commPorts = new Map();
         /** @type {import('core').MessageHandlerMap} */
         this._messageHandlers = new Map();
@@ -339,7 +339,12 @@ export class CrossFrameAPI {
      * @returns {Promise<TReturn>}
      */
     async invokeTab(targetTabId, targetFrameId, action, params) {
-        if (typeof targetTabId !== 'number') { targetTabId = this._tabId; }
+        if (typeof targetTabId !== 'number') {
+            targetTabId = this._tabId;
+            if (typeof targetTabId !== 'number') {
+                throw new Error('Unknown target tab id for invocation');
+            }
+        }
         const commPort = await this._getOrCreateCommPort(targetTabId, targetFrameId);
         return await commPort.invoke(action, params, this._ackTimeout, this._responseTimeout);
     }
@@ -405,7 +410,7 @@ export class CrossFrameAPI {
     }
 
     /**
-     * @param {?number} otherTabId
+     * @param {number} otherTabId
      * @param {number} otherFrameId
      * @returns {Promise<CrossFrameAPIPort>}
      */
@@ -420,7 +425,7 @@ export class CrossFrameAPI {
         return await this._createCommPort(otherTabId, otherFrameId);
     }
     /**
-     * @param {?number} otherTabId
+     * @param {number} otherTabId
      * @param {number} otherFrameId
      * @returns {Promise<CrossFrameAPIPort>}
      */
@@ -438,7 +443,7 @@ export class CrossFrameAPI {
     }
 
     /**
-     * @param {?number} otherTabId
+     * @param {number} otherTabId
      * @param {number} otherFrameId
      * @param {chrome.runtime.Port} port
      * @returns {CrossFrameAPIPort}
diff --git a/ext/js/comm/frame-ancestry-handler.js b/ext/js/comm/frame-ancestry-handler.js
index 49c96c22..687ec368 100644
--- a/ext/js/comm/frame-ancestry-handler.js
+++ b/ext/js/comm/frame-ancestry-handler.js
@@ -122,7 +122,7 @@ export class FrameAncestryHandler {
             const responseMessageId = `${this._responseMessageIdBase}${uniqueId}`;
             /** @type {number[]} */
             const results = [];
-            /** @type {?number} */
+            /** @type {?import('core').Timeout} */
             let timer = null;
 
             const cleanup = () => {
diff --git a/ext/js/comm/frame-client.js b/ext/js/comm/frame-client.js
index 1519cf7f..8aa8c6d6 100644
--- a/ext/js/comm/frame-client.js
+++ b/ext/js/comm/frame-client.js
@@ -83,7 +83,7 @@ export class FrameClient {
     _connectInternal(frame, targetOrigin, hostFrameId, setupFrame, timeout) {
         return new Promise((resolve, reject) => {
             const tokenMap = new Map();
-            /** @type {?number} */
+            /** @type {?import('core').Timeout} */
             let timer = null;
             const deferPromiseDetails = /** @type {import('core').DeferredPromiseDetails<void>} */ (deferPromise());
             const frameLoadedPromise = deferPromiseDetails.promise;
diff --git a/ext/js/comm/mecab.js b/ext/js/comm/mecab.js
index 072b42f3..0a87463b 100644
--- a/ext/js/comm/mecab.js
+++ b/ext/js/comm/mecab.js
@@ -31,7 +31,7 @@ export class Mecab {
         this._port = null;
         /** @type {number} */
         this._sequence = 0;
-        /** @type {Map<number, {resolve: (value: unknown) => void, reject: (reason?: unknown) => void, timer: number}>} */
+        /** @type {Map<number, {resolve: (value: unknown) => void, reject: (reason?: unknown) => void, timer: import('core').Timeout}>} */
         this._invocations = new Map();
         /** @type {EventListenerCollection} */
         this._eventListeners = new EventListenerCollection();