diff --git a/src/lib/libhtml5.js b/src/lib/libhtml5.js
index ece133718fa25..79f0a33df37df 100644
--- a/src/lib/libhtml5.js
+++ b/src/lib/libhtml5.js
@@ -1105,7 +1105,20 @@ var LibraryHTML5 = {
     return {{{ cDefs.EMSCRIPTEN_RESULT_SUCCESS }}};
   },
 
-  $JSEvents_requestFullscreen__deps: ['$JSEvents', '$JSEvents_resizeCanvasForFullscreen'],
+#if PTHREADS
+  $callCanvasResizedCallback__deps: ['_emscripten_run_callback_on_thread'],
+#endif
+  $callCanvasResizedCallback: (strategy) => {
+    if (strategy.canvasResizedCallback) {
+#if PTHREADS
+      if (strategy.canvasResizedCallbackTargetThread) __emscripten_run_callback_on_thread(strategy.canvasResizedCallbackTargetThread, strategy.canvasResizedCallback, {{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, 0, strategy.canvasResizedCallbackUserData);
+      else
+#endif
+      {{{ makeDynCall('iipp', 'strategy.canvasResizedCallback') }}}({{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, strategy.canvasResizedCallbackUserData);
+    }
+  },
+
+  $JSEvents_requestFullscreen__deps: ['$JSEvents', '$JSEvents_resizeCanvasForFullscreen', '$callCanvasResizedCallback'],
   $JSEvents_requestFullscreen: (target, strategy) => {
     // EMSCRIPTEN_FULLSCREEN_SCALE_DEFAULT + EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_NONE is a mode where no extra logic is performed to the DOM elements.
     if (strategy.scaleMode != {{{ cDefs.EMSCRIPTEN_FULLSCREEN_SCALE_DEFAULT }}} || strategy.canvasResolutionScaleMode != {{{ cDefs.EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_NONE }}}) {
@@ -1123,15 +1136,7 @@ var LibraryHTML5 = {
     }
 
     currentFullscreenStrategy = strategy;
-
-    if (strategy.canvasResizedCallback) {
-#if PTHREADS
-      if (strategy.canvasResizedCallbackTargetThread) __emscripten_run_callback_on_thread(strategy.canvasResizedCallbackTargetThread, strategy.canvasResizedCallback, {{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, 0, strategy.canvasResizedCallbackUserData);
-      else
-#endif
-      {{{ makeDynCall('iipp', 'strategy.canvasResizedCallback') }}}({{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, strategy.canvasResizedCallbackUserData);
-    }
-
+    callCanvasResizedCallback(strategy);
     return {{{ cDefs.EMSCRIPTEN_RESULT_SUCCESS }}};
   },
 
@@ -1193,7 +1198,7 @@ var LibraryHTML5 = {
     return restoreOldStyle;
   },
 
-  $registerRestoreOldStyle__deps: ['$getCanvasElementSize', '$setCanvasElementSize', '$currentFullscreenStrategy'],
+  $registerRestoreOldStyle__deps: ['$getCanvasElementSize', '$setCanvasElementSize', '$currentFullscreenStrategy', '$callCanvasResizedCallback'],
   $registerRestoreOldStyle: (canvas) => {
     var canvasSize = getCanvasElementSize(canvas);
     var oldWidth = canvasSize[0];
@@ -1249,13 +1254,7 @@ var LibraryHTML5 = {
         canvas.style.imageRendering = oldImageRendering;
         if (canvas.GLctxObject) canvas.GLctxObject.GLctx.viewport(0, 0, oldWidth, oldHeight);
 
-        if (currentFullscreenStrategy.canvasResizedCallback) {
-#if PTHREADS
-          if (currentFullscreenStrategy.canvasResizedCallbackTargetThread) __emscripten_run_callback_on_thread(currentFullscreenStrategy.canvasResizedCallbackTargetThread, currentFullscreenStrategy.canvasResizedCallback, {{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
-          else
-#endif
-          {{{ makeDynCall('iipp', 'currentFullscreenStrategy.canvasResizedCallback') }}}({{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
-        }
+        callCanvasResizedCallback(currentFullscreenStrategy);
       }
     }
     document.addEventListener('fullscreenchange', restoreOldStyle);
@@ -1301,10 +1300,10 @@ var LibraryHTML5 = {
     element.style.paddingTop = element.style.paddingBottom = topBottom + 'px';
   },
 
-  $currentFullscreenStrategy: {},
+  $currentFullscreenStrategy: 0,
   $restoreOldWindowedStyle: null,
 
-  $softFullscreenResizeWebGLRenderTarget__deps: ['$setLetterbox', '$currentFullscreenStrategy', '$getCanvasElementSize', '$setCanvasElementSize', '$jstoi_q'],
+  $softFullscreenResizeWebGLRenderTarget__deps: ['$setLetterbox', '$currentFullscreenStrategy', '$getCanvasElementSize', '$setCanvasElementSize', '$jstoi_q', '$callCanvasResizedCallback'],
   $softFullscreenResizeWebGLRenderTarget: () => {
     var dpr = devicePixelRatio;
     var inHiDPIFullscreenMode = currentFullscreenStrategy.canvasResolutionScaleMode == {{{ cDefs.EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_HIDEF }}};
@@ -1354,12 +1353,8 @@ var LibraryHTML5 = {
       setLetterbox(canvas, topMargin, b);
     }
 
-    if (!inCenteredWithoutScalingFullscreenMode && currentFullscreenStrategy.canvasResizedCallback) {
-#if PTHREADS
-      if (currentFullscreenStrategy.canvasResizedCallbackTargetThread) __emscripten_run_callback_on_thread(currentFullscreenStrategy.canvasResizedCallbackTargetThread, currentFullscreenStrategy.canvasResizedCallback, {{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
-      else
-#endif
-      {{{ makeDynCall('iipp', 'currentFullscreenStrategy.canvasResizedCallback') }}}({{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
+    if (!inCenteredWithoutScalingFullscreenMode) {
+      callCanvasResizedCallback(currentFullscreenStrategy);
     }
   },
 
@@ -1432,7 +1427,7 @@ var LibraryHTML5 = {
     return doRequestFullscreen(target, strategy);
   },
 
-  emscripten_enter_soft_fullscreen__deps: ['$JSEvents', '$hideEverythingExceptGivenElement', '$restoreOldWindowedStyle', '$restoreHiddenElements', '$currentFullscreenStrategy', '$softFullscreenResizeWebGLRenderTarget', '$JSEvents_resizeCanvasForFullscreen', '$findEventTarget'],
+  emscripten_enter_soft_fullscreen__deps: ['$JSEvents', '$hideEverythingExceptGivenElement', '$restoreOldWindowedStyle', '$restoreHiddenElements', '$currentFullscreenStrategy', '$softFullscreenResizeWebGLRenderTarget', '$JSEvents_resizeCanvasForFullscreen', '$findEventTarget', '$callCanvasResizedCallback'],
   emscripten_enter_soft_fullscreen__proxy: 'sync',
   emscripten_enter_soft_fullscreen: (target, fullscreenStrategy) => {
 #if !DISABLE_DEPRECATED_FIND_EVENT_TARGET_BEHAVIOR
@@ -1442,16 +1437,16 @@ var LibraryHTML5 = {
     if (!target) return {{{ cDefs.EMSCRIPTEN_RESULT_UNKNOWN_TARGET }}};
 
     var strategy = {
-        scaleMode: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.scaleMode, 'i32') }}},
-        canvasResolutionScaleMode: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.canvasResolutionScaleMode, 'i32') }}},
-        filteringMode: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.filteringMode, 'i32') }}},
-        canvasResizedCallback: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.canvasResizedCallback, 'i32') }}},
-        canvasResizedCallbackUserData: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.canvasResizedCallbackUserData, 'i32') }}},
+      scaleMode: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.scaleMode, 'i32') }}},
+      canvasResolutionScaleMode: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.canvasResolutionScaleMode, 'i32') }}},
+      filteringMode: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.filteringMode, 'i32') }}},
+      canvasResizedCallback: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.canvasResizedCallback, 'i32') }}},
+      canvasResizedCallbackUserData: {{{ makeGetValue('fullscreenStrategy', C_STRUCTS.EmscriptenFullscreenStrategy.canvasResizedCallbackUserData, 'i32') }}},
 #if PTHREADS
-        canvasResizedCallbackTargetThread: JSEvents.getTargetThreadForEventCallback(),
+      canvasResizedCallbackTargetThread: JSEvents.getTargetThreadForEventCallback(),
 #endif
-        target,
-        softFullscreen: true
+      target,
+      softFullscreen: true
     };
 
     var restoreOldStyle = JSEvents_resizeCanvasForFullscreen(target, strategy);
@@ -1466,13 +1461,7 @@ var LibraryHTML5 = {
       restoreOldStyle();
       restoreHiddenElements(hiddenElements);
       removeEventListener('resize', softFullscreenResizeWebGLRenderTarget);
-      if (strategy.canvasResizedCallback) {
-#if PTHREADS
-        if (strategy.canvasResizedCallbackTargetThread) __emscripten_run_callback_on_thread(strategy.canvasResizedCallbackTargetThread, strategy.canvasResizedCallback, {{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, 0, strategy.canvasResizedCallbackUserData);
-        else
-#endif
-        {{{ makeDynCall('iipp', 'strategy.canvasResizedCallback') }}}({{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, strategy.canvasResizedCallbackUserData);
-      }
+      callCanvasResizedCallback(strategy);
       currentFullscreenStrategy = 0;
     }
     restoreOldWindowedStyle = restoreWindowedState;
@@ -1480,14 +1469,7 @@ var LibraryHTML5 = {
     addEventListener('resize', softFullscreenResizeWebGLRenderTarget);
 
     // Inform the caller that the canvas size has changed.
-    if (strategy.canvasResizedCallback) {
-#if PTHREADS
-      if (strategy.canvasResizedCallbackTargetThread) __emscripten_run_callback_on_thread(strategy.canvasResizedCallbackTargetThread, strategy.canvasResizedCallback, {{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, 0, strategy.canvasResizedCallbackUserData);
-      else
-#endif
-      {{{ makeDynCall('iipp', 'strategy.canvasResizedCallback') }}}({{{ cDefs.EMSCRIPTEN_EVENT_CANVASRESIZED }}}, 0, strategy.canvasResizedCallbackUserData);
-    }
-
+    callCanvasResizedCallback(strategy);
     return {{{ cDefs.EMSCRIPTEN_RESULT_SUCCESS }}};
   },
 
diff --git a/test/codesize/test_codesize_hello_O0.json b/test/codesize/test_codesize_hello_O0.json
index b3fbd259a048d..fa5e682019094 100644
--- a/test/codesize/test_codesize_hello_O0.json
+++ b/test/codesize/test_codesize_hello_O0.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 23560,
-  "a.out.js.gz": 8608,
+  "a.out.js": 23586,
+  "a.out.js.gz": 8615,
   "a.out.nodebug.wasm": 15115,
   "a.out.nodebug.wasm.gz": 7464,
-  "total": 38675,
-  "total_gz": 16072,
+  "total": 38701,
+  "total_gz": 16079,
   "sent": [
     "fd_write"
   ],
diff --git a/test/codesize/test_codesize_hello_dylink_all.json b/test/codesize/test_codesize_hello_dylink_all.json
index ed5c3055fd6f3..2cfcb515d7376 100644
--- a/test/codesize/test_codesize_hello_dylink_all.json
+++ b/test/codesize/test_codesize_hello_dylink_all.json
@@ -1,7 +1,7 @@
 {
-  "a.out.js": 268311,
+  "a.out.js": 268243,
   "a.out.nodebug.wasm": 587978,
-  "total": 856289,
+  "total": 856221,
   "sent": [
     "IMG_Init",
     "IMG_Load",
diff --git a/test/codesize/test_codesize_minimal_O0.expected.js b/test/codesize/test_codesize_minimal_O0.expected.js
index 2768cbc816e18..f768e93cd3692 100644
--- a/test/codesize/test_codesize_minimal_O0.expected.js
+++ b/test/codesize/test_codesize_minimal_O0.expected.js
@@ -969,12 +969,14 @@ Module['FS_createPreloadedFile'] = FS.createPreloadedFile;
   'registerOrientationChangeEventCallback',
   'fillFullscreenChangeEventData',
   'registerFullscreenChangeEventCallback',
+  'callCanvasResizedCallback',
   'JSEvents_requestFullscreen',
   'JSEvents_resizeCanvasForFullscreen',
   'registerRestoreOldStyle',
   'hideEverythingExceptGivenElement',
   'restoreHiddenElements',
   'setLetterbox',
+  'currentFullscreenStrategy',
   'softFullscreenResizeWebGLRenderTarget',
   'doRequestFullscreen',
   'fillPointerlockChangeEventData',
@@ -1076,7 +1078,6 @@ missingLibrarySymbols.forEach(missingLibrarySymbol)
   'JSEvents',
   'specialHTMLTargets',
   'findCanvasEventTarget',
-  'currentFullscreenStrategy',
   'restoreOldWindowedStyle',
   'UNWIND_CACHE',
   'ExitStatus',
diff --git a/test/codesize/test_codesize_minimal_O0.json b/test/codesize/test_codesize_minimal_O0.json
index 18375b41ac425..471feccf094c2 100644
--- a/test/codesize/test_codesize_minimal_O0.json
+++ b/test/codesize/test_codesize_minimal_O0.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 18764,
-  "a.out.js.gz": 6779,
+  "a.out.js": 18790,
+  "a.out.js.gz": 6786,
   "a.out.nodebug.wasm": 1015,
   "a.out.nodebug.wasm.gz": 602,
-  "total": 19779,
-  "total_gz": 7381,
+  "total": 19805,
+  "total_gz": 7388,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_unoptimized_code_size.json b/test/codesize/test_unoptimized_code_size.json
index ef39819ba2646..5e254e55d89b8 100644
--- a/test/codesize/test_unoptimized_code_size.json
+++ b/test/codesize/test_unoptimized_code_size.json
@@ -1,16 +1,16 @@
 {
-  "hello_world.js": 56122,
-  "hello_world.js.gz": 17671,
+  "hello_world.js": 56153,
+  "hello_world.js.gz": 17678,
   "hello_world.wasm": 15115,
   "hello_world.wasm.gz": 7464,
   "no_asserts.js": 25585,
   "no_asserts.js.gz": 8688,
   "no_asserts.wasm": 12229,
   "no_asserts.wasm.gz": 6004,
-  "strict.js": 53224,
-  "strict.js.gz": 16642,
+  "strict.js": 53255,
+  "strict.js.gz": 16649,
   "strict.wasm": 15115,
   "strict.wasm.gz": 7461,
-  "total": 177390,
-  "total_gz": 63930
+  "total": 177452,
+  "total_gz": 63944
 }