Use JS optional chaining in more places. NFC (emscripten-core#22087)

Author: sbc100

src/library.js

@@ -3357,7 +3357,7 @@ function wrapSyscallFunction(x, library, isWasi) {
   var canThrow = library[x + '__nothrow'] !== true;
 #endif
 
-  if (!library[x + '__deps']) library[x + '__deps'] = [];
+  library[x + '__deps'] ??= [];
 
 #if PURE_WASI
   // In PURE_WASI mode we can't assume the wasm binary was built by emscripten

src/library_browser.js

@@ -869,7 +869,7 @@ var LibraryBrowser = {
           Browser.setImmediate = /** @type{function(function(): ?, ...?): number} */(function Browser_emulated_setImmediate(func) {
             setImmediates.push(func);
             if (ENVIRONMENT_IS_WORKER) {
-              if (Module['setImmediates'] === undefined) Module['setImmediates'] = [];
+              Module['setImmediates'] ??= [];
               Module['setImmediates'].push(func);
               postMessage({target: emscriptenMainLoopMessageId}); // In --proxy-to-worker, route the message via proxyClient.js
             } else postMessage(emscriptenMainLoopMessageId, "*"); // On the main thread, can just send the message to itself.

src/library_glfw.js

@@ -1184,8 +1184,8 @@ var LibraryGLFW = {
             Browser.updateResizeListeners();
           }
         }
-        if (Module['onFullScreen']) Module['onFullScreen'](Browser.isFullscreen);
-        if (Module['onFullscreen']) Module['onFullscreen'](Browser.isFullscreen);
+        Module['onFullScreen']?.(Browser.isFullscreen);
+        Module['onFullscreen']?.(Browser.isFullscreen);
       }
 
       if (!Browser.fullscreenHandlersInstalled) {

src/library_html5_webgl.js

@@ -541,7 +541,7 @@ function handleWebGLProxying(funcs) {
       funcs[i + '_main_thread'] = i + '_calling_thread';
       funcs[i + '_main_thread__proxy'] = 'sync';
       funcs[i + '_main_thread__sig'] = sig;
-      if (!funcs[i + '__deps']) funcs[i + '__deps'] = [];
+      funcs[i + '__deps'] ??= [];
       funcs[i + '__deps'].push(i + '_calling_thread');
       funcs[i + '__deps'].push(i + '_main_thread');
       delete funcs[i + '__proxy'];

src/postamble.js

@@ -220,7 +220,7 @@ function run() {
     readyPromiseResolve(Module);
 #endif
 #if expectToReceiveOnModule('onRuntimeInitialized')
-    if (Module['onRuntimeInitialized']) Module['onRuntimeInitialized']();
+    Module['onRuntimeInitialized']?.();
 #endif
 
 #if HAS_MAIN

src/proxyWorker.js

@@ -475,7 +475,7 @@ function onMessageFromMainEmscriptenThread(message) {
       break;
     }
     case 'setimmediate': {
-      if (Module['setImmediates']) Module['setImmediates'].shift()();
+      Module['setImmediates']?.shift()();
       break;
     }
     default: throw 'wha? ' + message.data.target;

test/other/metadce/test_metadce_cxx_ctors1.gzsize

@@ -1 +1 @@
-9756
+9761

test/other/metadce/test_metadce_cxx_ctors1.jssize

@@ -1 +1 @@
-23909
+23884

test/other/metadce/test_metadce_cxx_ctors2.gzsize

@@ -1 +1 @@
-9740
+9744

test/other/metadce/test_metadce_cxx_ctors2.jssize

@@ -1 +1 @@
-23877
+23852