emscripten-core · sbc100 · Jul 9, 2025
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -21,7 +21,7 @@
     "@babel/core": "^7.28.0",
     "@babel/preset-env": "^7.28.0",
     "acorn": "^8.15.0",
-    "google-closure-compiler": "20240317.0.0",
+    "google-closure-compiler": "20250701.0.0",
     "html-minifier-terser": "7.2.0"
   },
   "scripts": {

diff --git a/src/closure-externs/closure-externs.js b/src/closure-externs/closure-externs.js
@@ -73,12 +73,6 @@ Atomics.store = function() {};
  * @suppress {duplicate, checkTypes}
  */
 var WebAssembly = {};
-/**
- * @constructor
- * @param {Object} globalDescriptor
- * @param {*=} value
- */
-WebAssembly.Global = function(globalDescriptor, value) {};
 /**
  * @param {!WebAssembly.Tag} tag
  * @param {number} index

diff --git a/test/code_size/audio_worklet_wasm.js b/test/code_size/audio_worklet_wasm.js
@@ -1,15 +1,15 @@
-var k = globalThis.Module || "undefined" != typeof Module ? Module : {}, p = "em-ww" == globalThis.name, q = "undefined" !== typeof AudioWorkletGlobalScope, r, v, L, M, G, I, C, X, J, E, D, Y, Z;
+var k = globalThis.Module || typeof Module != "undefined" ? Module : {}, p = globalThis.name == "em-ww", q = typeof AudioWorkletGlobalScope !== "undefined", r, v, L, M, G, I, C, X, J, E, D, Y, Z;
 
 q && (p = !0);
 
 function u(a) {
     r = a;
-    v = a.I;
+    v = a.J;
     x();
     k ||= {};
-    k.wasm = a.C;
+    k.wasm = a.D;
     y();
-    a.C = a.J = 0;
+    a.D = a.K = 0;
 }
 
 p && !q && (onmessage = a => {
@@ -23,38 +23,38 @@ if (q) {
             constructor(e) {
                 super();
                 e = e.processorOptions;
-                this.u = C.get(e.u);
-                this.v = e.v;
-                this.s = e.s;
+                this.v = C.get(e.v);
+                this.A = e.A;
+                this.u = e.u;
             }
             static get parameterDescriptors() {
                 return c;
             }
             process(e, h, f) {
-                let m = e.length, w = h.length, F = 0, l, z, n, t = 4 * this.s, g = 12 * (m + w), W = D(), A, H, B;
+                let m = e.length, w = h.length, F = 0, l, z, n, t = this.u * 4, g = (m + w) * 12, W = D(), A, H, B;
                 for (l of e) g += l.length * t;
                 for (l of h) g += l.length * t;
                 for (l in f) g += f[l].byteLength + 8, ++F;
                 A = E(g);
                 g = A >> 2;
-                n = A + 12 * m;
+                n = A + m * 12;
                 for (l of e) {
                     G[g] = l.length;
-                    G[g + 1] = this.s;
+                    G[g + 1] = this.u;
                     G[g + 2] = n;
                     g += 3;
                     for (z of l) I.set(z, n >> 2), n += t;
                 }
                 H = n;
                 g = H >> 2;
-                e = (n += 12 * w) >> 2;
-                for (l of h) G[g] = l.length, G[g + 1] = this.s, G[g + 2] = n, g += 3, n += t * l.length;
+                e = (n += w * 12) >> 2;
+                for (l of h) G[g] = l.length, G[g + 1] = this.u, G[g + 2] = n, g += 3, n += t * l.length;
                 t = n;
                 g = t >> 2;
-                n += 8 * F;
+                n += F * 8;
                 for (l = 0; B = f[l++]; ) G[g] = B.length, G[g + 1] = n, g += 2, I.set(B, n >> 2), 
-                n += 4 * B.length;
-                if (f = this.u(m, A, w, H, F, t, this.v)) for (l of h) for (z of l) for (g = 0; g < this.s; ++g) z[g] = I[e++];
+                n += B.length * 4;
+                if (f = this.v(m, A, w, H, F, t, this.A)) for (l of h) for (z of l) for (g = 0; g < this.u; ++g) z[g] = I[e++];
                 J(W);
                 return !!f;
             }
@@ -69,10 +69,10 @@ if (q) {
             K = this.port;
             K.onmessage = async d => {
                 d = d.data;
-                d._wpn ? (registerProcessor(d._wpn, a(d.D)), K.postMessage({
-                    _wsc: d.u,
-                    A: [ d.F, 1, d.v ]
-                })) : d._wsc && C.get(d._wsc)(...d.A);
+                d._wpn ? (registerProcessor(d._wpn, a(d.F)), K.postMessage({
+                    _wsc: d.v,
+                    B: [ d.G, 1, d.A ]
+                })) : d._wsc && C.get(d._wsc)(...d.B);
             };
         }
         process() {}
@@ -103,17 +103,17 @@ var N = [], O = a => {
 }, Q = a => J(a), R = () => D(), aa = (a, b, c, d) => {
     b = S[b];
     S[a].connect(b.destination || b, c, d);
-}, S = {}, T = 0, U = "undefined" != typeof TextDecoder ? new TextDecoder : void 0, V = (a = 0) => {
+}, S = {}, T = 0, U = typeof TextDecoder != "undefined" ? new TextDecoder : void 0, V = (a = 0) => {
     for (var b = L, c = a, d = c + void 0; b[c] && !(c >= d); ) ++c;
-    if (16 < c - a && b.buffer && U) return U.decode(b.slice(a, c));
+    if (c - a > 16 && b.buffer && U) return U.decode(b.slice(a, c));
     for (d = ""; a < c; ) {
         var e = b[a++];
         if (e & 128) {
             var h = b[a++] & 63;
-            if (192 == (e & 224)) d += String.fromCharCode((e & 31) << 6 | h); else {
+            if ((e & 224) == 192) d += String.fromCharCode((e & 31) << 6 | h); else {
                 var f = b[a++] & 63;
-                e = 224 == (e & 240) ? (e & 15) << 12 | h << 6 | f : (e & 7) << 18 | h << 12 | f << 6 | b[a++] & 63;
-                65536 > e ? d += String.fromCharCode(e) : (e -= 65536, d += String.fromCharCode(55296 | e >> 10, 56320 | e & 1023));
+                e = (e & 240) == 224 ? (e & 15) << 12 | h << 6 | f : (e & 7) << 18 | h << 12 | f << 6 | b[a++] & 63;
+                e < 65536 ? d += String.fromCharCode(e) : (e -= 65536, d += String.fromCharCode(55296 | e >> 10, 56320 | e & 1023));
             }
         } else d += String.fromCharCode(e);
     }
@@ -144,9 +144,9 @@ var N = [], O = a => {
             numberOfOutputs: f,
             outputChannelCount: m,
             processorOptions: {
-                u: d,
-                v: e,
-                s: 128
+                v: d,
+                A: e,
+                u: 128
             }
         };
     } else d = void 0;
@@ -163,36 +163,36 @@ var N = [], O = a => {
         maxValue: I[f++],
         automationRate: [ "a", "k" ][G[f++]] + "-rate"
     });
-    h = S[a].audioWorklet.B.port;
+    h = S[a].audioWorklet.C.port;
     f = h.postMessage;
     b = (b = G[b]) ? V(b) : "";
     f.call(h, {
         _wpn: b,
-        D: e,
-        F: a,
-        u: c,
-        v: d
+        F: e,
+        G: a,
+        v: c,
+        A: d
     });
 }, ea = () => !1, fa = 1, ha = a => {
     a = a.data;
     let b = a._wsc;
-    b && C.get(b)(...a.A);
+    b && C.get(b)(...a.B);
 }, ia = a => E(a), ja = (a, b, c, d, e) => {
     let h = S[a], f = h.audioWorklet, m = () => {
         C.get(d)(a, 0, e);
     };
     if (!f) return m();
     f.addModule(k.js).then((() => {
-        f.B = new AudioWorkletNode(h, "em-bootstrap", {
+        f.C = new AudioWorkletNode(h, "em-bootstrap", {
             processorOptions: {
-                K: fa++,
-                C: k.wasm,
-                I: v,
-                G: b,
-                H: c
+                L: fa++,
+                D: k.wasm,
+                J: v,
+                H: b,
+                I: c
             }
         });
-        f.B.port.onmessage = ha;
+        f.C.port.onmessage = ha;
         C.get(d)(a, 1, e);
     })).catch(m);
 };
@@ -203,7 +203,7 @@ function ka(a) {
     document.body.appendChild(b);
     a = S[a];
     b.onclick = () => {
-        "running" != a.state ? a.resume() : a.suspend();
+        a.state != "running" ? a.resume() : a.suspend();
     };
 }
 
@@ -232,7 +232,7 @@ function y() {
         k.stackAlloc = ia;
         k.stackRestore = Q;
         k.wasmTable = C;
-        p ? (Y(r.G, r.H), "undefined" === typeof AudioWorkletGlobalScope && (removeEventListener("message", P), 
+        p ? (Y(r.H, r.I), typeof AudioWorkletGlobalScope === "undefined" && (removeEventListener("message", P), 
         N = N.forEach(O), addEventListener("message", O))) : a.i();
         p || X();
     }));

diff --git a/test/code_size/audio_worklet_wasm.json b/test/code_size/audio_worklet_wasm.json
@@ -2,9 +2,9 @@
   "a.html": 519,
   "a.html.gz": 357,
   "a.js": 3853,
-  "a.js.gz": 2045,
+  "a.js.gz": 2048,
   "a.wasm": 1288,
   "a.wasm.gz": 860,
   "total": 5660,
-  "total_gz": 3262
+  "total_gz": 3265
 }
diff --git a/test/code_size/embind_hello_wasm.json b/test/code_size/embind_hello_wasm.json
@@ -1,10 +1,10 @@
 {
   "a.html": 552,
   "a.html.gz": 373,
-  "a.js": 7255,
-  "a.js.gz": 3313,
+  "a.js": 7256,
+  "a.js.gz": 3320,
   "a.wasm": 7294,
   "a.wasm.gz": 3339,
-  "total": 15101,
-  "total_gz": 7025
+  "total": 15102,
+  "total_gz": 7032
 }
diff --git a/test/code_size/embind_val_wasm.json b/test/code_size/embind_val_wasm.json
@@ -1,10 +1,10 @@
 {
   "a.html": 552,
   "a.html.gz": 373,
-  "a.js": 5356,
-  "a.js.gz": 2526,
+  "a.js": 5361,
+  "a.js.gz": 2523,
   "a.wasm": 7468,
   "a.wasm.gz": 3461,
-  "total": 13376,
-  "total_gz": 6360
+  "total": 13381,
+  "total_gz": 6357
 }
diff --git a/test/code_size/hello_wasm_worker_wasm.js b/test/code_size/hello_wasm_worker_wasm.js
@@ -1,4 +1,4 @@
-var b = Module, c = "em-ww" == globalThis.name, e, f, l, x, y, z;
+var b = Module, c = globalThis.name == "em-ww", e, f, l, x, y, z;
 
 c && (onmessage = a => {
     onmessage = null;
@@ -8,7 +8,7 @@ c && (onmessage = a => {
     b ||= {};
     b.wasm = a.j;
     h();
-    a.j = a.s = 0;
+    a.j = a.u = 0;
 });
 
 function g() {}
@@ -30,7 +30,7 @@ var k = [], n = a => {
         name: "em-ww"
     });
     m.postMessage({
-        u: r,
+        v: r,
         j: b.wasm,
         o: f,
         l: a,

diff --git a/test/code_size/hello_wasm_worker_wasm.json b/test/code_size/hello_wasm_worker_wasm.json
@@ -2,9 +2,9 @@
   "a.html": 519,
   "a.html.gz": 357,
   "a.js": 830,
-  "a.js.gz": 525,
+  "a.js.gz": 524,
   "a.wasm": 1885,
   "a.wasm.gz": 1072,
   "total": 3234,
-  "total_gz": 1954
+  "total_gz": 1953
 }
diff --git a/test/code_size/hello_webgl2_wasm.json b/test/code_size/hello_webgl2_wasm.json
@@ -2,9 +2,9 @@
   "a.html": 454,
   "a.html.gz": 321,
   "a.js": 4386,
-  "a.js.gz": 2247,
+  "a.js.gz": 2250,
   "a.wasm": 8278,
   "a.wasm.gz": 5620,
   "total": 13118,
-  "total_gz": 8188
+  "total_gz": 8191
 }
diff --git a/test/code_size/hello_webgl2_wasm2js.json b/test/code_size/hello_webgl2_wasm2js.json
@@ -1,8 +1,8 @@
 {
   "a.html": 346,
   "a.html.gz": 255,
-  "a.js": 18103,
-  "a.js.gz": 9766,
-  "total": 18449,
-  "total_gz": 10021
+  "a.js": 18138,
+  "a.js.gz": 9771,
+  "total": 18484,
+  "total_gz": 10026
 }
diff --git a/test/code_size/hello_webgl_wasm.json b/test/code_size/hello_webgl_wasm.json
@@ -2,9 +2,9 @@
   "a.html": 454,
   "a.html.gz": 321,
   "a.js": 3924,
-  "a.js.gz": 2087,
+  "a.js.gz": 2086,
   "a.wasm": 8278,
   "a.wasm.gz": 5620,
   "total": 12656,
-  "total_gz": 8028
+  "total_gz": 8027
 }
diff --git a/test/code_size/hello_webgl_wasm2js.json b/test/code_size/hello_webgl_wasm2js.json
@@ -1,8 +1,8 @@
 {
   "a.html": 346,
   "a.html.gz": 255,
-  "a.js": 17630,
-  "a.js.gz": 9598,
-  "total": 17976,
-  "total_gz": 9853
+  "a.js": 17665,
+  "a.js.gz": 9600,
+  "total": 18011,
+  "total_gz": 9855
 }
diff --git a/test/code_size/hello_world_wasm2js.js b/test/code_size/hello_world_wasm2js.js
@@ -3,12 +3,12 @@ var d = Module, g, h, k = new TextDecoder, l;
 function e(a) {
     this.exports = function(q) {
         function u(r, b, m) {
-            for (var v, p = 0, t = b, w = m.length, x = b + (3 * w >> 2) - ("=" == m[w - 2]) - ("=" == m[w - 1]); p < w; p += 4) b = c[m.charCodeAt(p + 1)], 
+            for (var v, p = 0, t = b, w = m.length, x = b + (w * 3 >> 2) - (m[w - 2] == "=") - (m[w - 1] == "="); p < w; p += 4) b = c[m.charCodeAt(p + 1)], 
             v = c[m.charCodeAt(p + 2)], r[t++] = c[m.charCodeAt(p)] << 2 | b >> 4, t < x && (r[t++] = b << 4 | v >> 2), 
             t < x && (r[t++] = v << 6 | c[m.charCodeAt(p + 3)]);
             return r;
         }
-        for (var n, c = new Uint8Array(123), f = 25; 0 <= f; --f) c[48 + f] = 52 + f, c[65 + f] = f, 
+        for (var n, c = new Uint8Array(123), f = 25; f >= 0; --f) c[48 + f] = 52 + f, c[65 + f] = f, 
         c[97 + f] = 26 + f;
         c[43] = 62;
         c[47] = 63;

diff --git a/test/code_size/random_printf_wasm.json b/test/code_size/random_printf_wasm.json
@@ -1,6 +1,6 @@
 {
   "a.html": 12511,
-  "a.html.gz": 6848,
+  "a.html.gz": 6847,
   "total": 12511,
-  "total_gz": 6848
+  "total_gz": 6847
 }
diff --git a/test/code_size/random_printf_wasm2js.json b/test/code_size/random_printf_wasm2js.json
@@ -1,6 +1,6 @@
 {
   "a.html": 17224,
-  "a.html.gz": 7551,
+  "a.html.gz": 7552,
   "total": 17224,
-  "total_gz": 7551
+  "total_gz": 7552
 }
diff --git a/test/other/codesize/test_codesize_cxx_ctors1.gzsize b/test/other/codesize/test_codesize_cxx_ctors1.gzsize
@@ -1 +1 @@
-8162
+8192
diff --git a/test/other/codesize/test_codesize_cxx_ctors1.jssize b/test/other/codesize/test_codesize_cxx_ctors1.jssize
@@ -1 +1 @@
-19802
+19878
diff --git a/test/other/codesize/test_codesize_cxx_ctors2.gzsize b/test/other/codesize/test_codesize_cxx_ctors2.gzsize
@@ -1 +1 @@
-8151
+8179
diff --git a/test/other/codesize/test_codesize_cxx_ctors2.jssize b/test/other/codesize/test_codesize_cxx_ctors2.jssize
@@ -1 +1 @@
-19780
+19856
diff --git a/test/other/codesize/test_codesize_cxx_except.gzsize b/test/other/codesize/test_codesize_cxx_except.gzsize
@@ -1 +1 @@
-9150
+9172
diff --git a/test/other/codesize/test_codesize_cxx_except.jssize b/test/other/codesize/test_codesize_cxx_except.jssize
@@ -1 +1 @@
-23463
+23540
diff --git a/test/other/codesize/test_codesize_cxx_except_wasm.gzsize b/test/other/codesize/test_codesize_cxx_except_wasm.gzsize
@@ -1 +1 @@
-8110
+8129
diff --git a/test/other/codesize/test_codesize_cxx_except_wasm.jssize b/test/other/codesize/test_codesize_cxx_except_wasm.jssize
@@ -1 +1 @@
-19691
+19743
diff --git a/test/other/codesize/test_codesize_cxx_except_wasm_legacy.gzsize b/test/other/codesize/test_codesize_cxx_except_wasm_legacy.gzsize
@@ -1 +1 @@
-8110
+8129