Bump google-closure-compiler to 20260831.0.0

package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "acorn": "^8.18.0",
     "acorn-import-phases": "^1.0.4",
-    "google-closure-compiler": "20260726.0.0",
+    "google-closure-compiler": "20260831.0.0",
     "html-minifier-terser": "7.2.0"
   },
   "scripts": {

src/closure-externs/closure-externs.js

@@ -68,10 +68,6 @@ WebAssembly.Exception.stack;
  * Note: Closure compiler does not support function overloading, omit this overload for now.
  * {function(!WebAssembly.Module, Object=):!Promise<!WebAssembly.Instance>}
  */
-/**
- * @returns {ArrayBuffer}
- */
-WebAssembly.Memory.prototype.toResizableBuffer = function() {};
 /**
  * @param {!Function} func
  * @returns {Function}

src/lib/libwebgl.js

@@ -769,7 +769,7 @@ for (/**@suppress{duplicate}*/var i = 0; i <= {{{ GL_POOL_TEMP_BUFFERS_SIZE }}};
       // version field in above check.
       if (!canvas.getContextSafariWebGL2Fixed) {
         canvas.getContextSafariWebGL2Fixed = canvas.getContext;
-        /** @type {function(this:HTMLCanvasElement, string, (Object|null)=): (Object|null)} */
+        /** @type {function(this:HTMLCanvasElement, string, (Object|null)=): (RenderingContext|null)} */
         function fixedGetContext(ver, attrs) {
           var gl = canvas.getContextSafariWebGL2Fixed(ver, attrs);
           return ((ver == 'webgl') == (gl instanceof WebGLRenderingContext)) ? gl : null;

test/codesize/test_codesize_cxx_ctors1.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19224,
-  "a.out.js.gz": 8124,
+  "a.out.js": 19225,
+  "a.out.js.gz": 8125,
   "a.out.nodebug.wasm": 133884,
   "a.out.nodebug.wasm.gz": 51214,
-  "total": 153108,
-  "total_gz": 59338,
+  "total": 153109,
+  "total_gz": 59339,
   "sent": [
     "__cxa_throw",
     "_abort_js",

test/codesize/test_codesize_cxx_ctors2.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19201,
-  "a.out.js.gz": 8107,
+  "a.out.js": 19202,
+  "a.out.js.gz": 8109,
   "a.out.nodebug.wasm": 133313,
   "a.out.nodebug.wasm.gz": 50910,
-  "total": 152514,
-  "total_gz": 59017,
+  "total": 152515,
+  "total_gz": 59019,
   "sent": [
     "__cxa_throw",
     "_abort_js",

test/codesize/test_codesize_cxx_except.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 22917,
-  "a.out.js.gz": 9078,
+  "a.out.js": 22919,
+  "a.out.js.gz": 9082,
   "a.out.nodebug.wasm": 176341,
   "a.out.nodebug.wasm.gz": 58740,
-  "total": 199258,
-  "total_gz": 67818,
+  "total": 199260,
+  "total_gz": 67822,
   "sent": [
     "__cxa_begin_catch",
     "__cxa_end_catch",

test/codesize/test_codesize_cxx_except_wasm.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19023,
-  "a.out.js.gz": 8039,
+  "a.out.js": 19024,
+  "a.out.js.gz": 8041,
   "a.out.nodebug.wasm": 149601,
   "a.out.nodebug.wasm.gz": 56302,
-  "total": 168624,
-  "total_gz": 64341,
+  "total": 168625,
+  "total_gz": 64343,
   "sent": [
     "_abort_js",
     "_tzset_js",

test/codesize/test_codesize_cxx_except_wasm_legacy.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19101,
-  "a.out.js.gz": 8065,
+  "a.out.js": 19102,
+  "a.out.js.gz": 8066,
   "a.out.nodebug.wasm": 147383,
   "a.out.nodebug.wasm.gz": 55981,
-  "total": 166484,
-  "total_gz": 64046,
+  "total": 166485,
+  "total_gz": 64047,
   "sent": [
     "_abort_js",
     "_tzset_js",

test/codesize/test_codesize_cxx_mangle.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 22967,
-  "a.out.js.gz": 9098,
+  "a.out.js": 22969,
+  "a.out.js.gz": 9103,
   "a.out.nodebug.wasm": 242621,
   "a.out.nodebug.wasm.gz": 80965,
-  "total": 265588,
-  "total_gz": 90063,
+  "total": 265590,
+  "total_gz": 90068,
   "sent": [
     "__cxa_begin_catch",
     "__cxa_end_catch",

test/codesize/test_codesize_cxx_noexcept.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19224,
-  "a.out.js.gz": 8124,
+  "a.out.js": 19225,
+  "a.out.js.gz": 8125,
   "a.out.nodebug.wasm": 135794,
   "a.out.nodebug.wasm.gz": 51836,
-  "total": 155018,
-  "total_gz": 59960,
+  "total": 155019,
+  "total_gz": 59961,
   "sent": [
     "__cxa_throw",
     "_abort_js",

test/codesize/test_codesize_file_preload.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 22203,
-  "a.out.js.gz": 9267,
+  "a.out.js": 22205,
+  "a.out.js.gz": 9269,
   "a.out.nodebug.wasm": 1198,
   "a.out.nodebug.wasm.gz": 730,
-  "total": 23401,
-  "total_gz": 9997,
+  "total": 23403,
+  "total_gz": 9999,
   "sent": [
     "a (fd_write)"
   ],

test/codesize/test_codesize_hello_O0.json

@@ -1,10 +1,10 @@
 {
   "a.out.js": 23471,
-  "a.out.js.gz": 8555,
+  "a.out.js.gz": 8556,
   "a.out.nodebug.wasm": 14228,
   "a.out.nodebug.wasm.gz": 7062,
   "total": 37699,
-  "total_gz": 15617,
+  "total_gz": 15618,
   "sent": [
     "fd_write"
   ],

test/codesize/test_codesize_hello_dylink.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 26258,
-  "a.out.js.gz": 11211,
+  "a.out.js": 26261,
+  "a.out.js.gz": 11210,
   "a.out.nodebug.wasm": 16992,
   "a.out.nodebug.wasm.gz": 8679,
-  "total": 43250,
-  "total_gz": 19890,
+  "total": 43253,
+  "total_gz": 19889,
   "sent": [
     "__syscall_stat64",
     "emscripten_resize_heap",

test/codesize/test_codesize_hello_dylink_all.json

@@ -1,7 +1,7 @@
 {
-  "a.out.js": 270584,
+  "a.out.js": 270729,
   "a.out.nodebug.wasm": 588233,
-  "total": 858817,
+  "total": 858962,
   "sent": [
     "IMG_Init",
     "IMG_Load",

test/codesize/test_codesize_minimal_pthreads.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 6883,
-  "a.out.js.gz": 3422,
+  "a.out.js": 6895,
+  "a.out.js.gz": 3425,
   "a.out.nodebug.wasm": 19132,
   "a.out.nodebug.wasm.gz": 8845,
-  "total": 26015,
-  "total_gz": 12267,
+  "total": 26027,
+  "total_gz": 12270,
   "sent": [
     "a (memory)",
     "b (exit)",

test/codesize/test_codesize_minimal_pthreads_memgrowth.json

@@ -1,10 +1,10 @@
 {
-  "a.out.js": 7341,
-  "a.out.js.gz": 3639,
+  "a.out.js": 7353,
+  "a.out.js.gz": 3642,
   "a.out.nodebug.wasm": 19133,
   "a.out.nodebug.wasm.gz": 8846,
-  "total": 26474,
-  "total_gz": 12485,
+  "total": 26486,
+  "total_gz": 12488,
   "sent": [
     "a (memory)",
     "b (exit)",

test/codesize/test_minimal_runtime_code_size_random_printf_wasm2js.json

@@ -1,4 +1,4 @@
 {
-  "a.html": 17338,
-  "a.html.gz": 7629
+  "a.html": 17341,
+  "a.html.gz": 7631
 }

tools/building.py

@@ -22,6 +22,7 @@
   diagnostics,
   feature_matrix,
   js_optimizer,
+  ports,
   response_file,
   shared,
   utils,
@@ -570,6 +571,26 @@ def version_split(v):
   return f'{int(major)}.{int(minor)}.{int(rev)}'
 
 
+def filter_closure_args(args):
+  # TODO: this can be removed once emdawnwebgpu no longer passes in
+  # --externs=webgpu-externs.js
+  # Closure compiler includes WebGPU externs natively (w3c_webgpu.js).
+  # Exclude webgpu-externs.js (provided by emdawnwebgpu) to avoid duplicate definition errors.
+  filtered = []
+  skip_next = False
+  for i, arg in enumerate(args):
+    if skip_next:
+      skip_next = False
+      continue
+    if arg == '--externs' and i + 1 < len(args) and args[i + 1].strip('\'"').endswith('webgpu-externs.js'):
+      skip_next = True
+      continue
+    if arg.startswith('--externs=') and arg.split('=', 1)[1].strip('\'"').endswith('webgpu-externs.js'):
+      continue
+    filtered.append(arg)
+  return filtered
+
+
 @ToolchainProfiler.profile()
 def closure_compiler(filename, advanced=True, extra_closure_args=None):
   user_args = []
@@ -578,6 +599,8 @@ def closure_compiler(filename, advanced=True, extra_closure_args=None):
     user_args += shlex.split(env_args)
   if extra_closure_args:
     user_args += extra_closure_args
+  if any('emdawnwebgpu' in p.name for p in ports.get_needed_ports(settings)):
+    user_args = filter_closure_args(user_args)
 
   closure_cmd, env = get_closure_compiler_and_env(user_args)