diff --git a/src/jsifier.mjs b/src/jsifier.mjs
index 84dc251827b75..de51b0d6fd992 100644
--- a/src/jsifier.mjs
+++ b/src/jsifier.mjs
@@ -247,12 +247,35 @@ function addImplicitDeps(snippet, deps) {
     'runtimeKeepalivePush',
     'runtimeKeepalivePop',
     'UTF8ToString',
+    // TODO: Consider removing getValue and setValue if they are rarely used implicitly.
+    'getValue',
+    'setValue',
   ];
   for (const dep of autoDeps) {
     if (snippet.includes(dep + '(')) {
       deps.push('$' + dep);
     }
   }
+  // If the snippet contains eval(), it may dynamically evaluate code loaded from memory at runtime
+  // (for example, in emscripten_run_script where the snippet is eval(UTF8ToString(ptr))).
+  // Because static string matching cannot inspect what strings are stored in memory or evaluated
+  // at runtime, we must conservatively include all heap views whenever a snippet uses eval().
+  if (snippet.includes('eval(')) {
+    deps.push('$HEAP8', '$HEAPU8', '$HEAP16', '$HEAPU16', '$HEAP32', '$HEAPU32', '$HEAPF32', '$HEAPF64');
+    if (WASM_BIGINT || MEMORY64) {
+      deps.push('$HEAP64', '$HEAPU64');
+    }
+  }
+  const heapDeps = [
+    'HEAP8', 'HEAP16', 'HEAPU8', 'HEAPU16',
+    'HEAP32', 'HEAPU32', 'HEAPF32', 'HEAPF64',
+    'HEAP64', 'HEAPU64',
+  ];
+  for (const heap of heapDeps) {
+    if (snippet.includes(heap)) {
+      deps.push('$' + heap);
+    }
+  }
 }
 
 function sigToArgs(sig) {
@@ -408,6 +431,14 @@ export async function runJSify(outputFile, symbolsOnly) {
 
   const symbolsNeeded = DEFAULT_LIBRARY_FUNCS_TO_INCLUDE;
   symbolsNeeded.push(...extraLibraryFuncs);
+
+  for (const fileName of [...PRE_JS_FILES, ...POST_JS_FILES]) {
+    const content = readFile(fileName);
+    addImplicitDeps(content, symbolsNeeded);
+  }
+  for (const snippet of EM_JS_SNIPPETS) {
+    addImplicitDeps(snippet, symbolsNeeded);
+  }
   for (const sym of EXPORTED_RUNTIME_METHODS) {
     if ('$' + sym in LibraryManager.library) {
       symbolsNeeded.push('$' + sym);
diff --git a/src/runtime_common.js b/src/runtime_common.js
index ae1474b25706e..6eee4e9d9dc60 100644
--- a/src/runtime_common.js
+++ b/src/runtime_common.js
@@ -99,13 +99,22 @@ var runtimeExited = false;
       shouldExport = true;
     }
     return shouldExport;
-  }
+  };
   const maybeExportHeap = (x) => {
     if (shouldExportHeap(x) && MODULARIZE != 'instance') {
       return `Module['${x}'] = `;
     }
     return '';
   };
+  const isHeapNeeded = (x) => {
+    return shouldExportHeap(x) || addedLibraryItems['$' + x];
+  };
+  const updateHeap = (x, type) => {
+    if (isHeapNeeded(x)) {
+      return `${maybeExportHeap(x)}${x} = new ${type}(b);`;
+    }
+    return '';
+  };
 }}}
 
 
@@ -161,17 +170,17 @@ function updateMemoryViews() {
 #endif
   var b = wasmMemory.buffer;
 #endif
-  {{{ maybeExportHeap('HEAP8')   }}}HEAP8 = new Int8Array(b);
-  {{{ maybeExportHeap('HEAP16')  }}}HEAP16 = new Int16Array(b);
-  {{{ maybeExportHeap('HEAPU8')  }}}HEAPU8 = new Uint8Array(b);
-  {{{ maybeExportHeap('HEAPU16') }}}HEAPU16 = new Uint16Array(b);
-  {{{ maybeExportHeap('HEAP32')  }}}HEAP32 = new Int32Array(b);
-  {{{ maybeExportHeap('HEAPU32') }}}HEAPU32 = new Uint32Array(b);
-  {{{ maybeExportHeap('HEAPF32') }}}HEAPF32 = new Float32Array(b);
-  {{{ maybeExportHeap('HEAPF64') }}}HEAPF64 = new Float64Array(b);
+  {{{ updateHeap('HEAP8',   'Int8Array')    }}}
+  {{{ updateHeap('HEAP16',  'Int16Array')   }}}
+  {{{ updateHeap('HEAPU8',  'Uint8Array')   }}}
+  {{{ updateHeap('HEAPU16', 'Uint16Array')  }}}
+  {{{ updateHeap('HEAP32',  'Int32Array')   }}}
+  {{{ updateHeap('HEAPU32', 'Uint32Array')  }}}
+  {{{ updateHeap('HEAPF32', 'Float32Array') }}}
+  {{{ updateHeap('HEAPF64', 'Float64Array') }}}
 #if WASM_BIGINT
-  {{{ maybeExportHeap('HEAP64')  }}}HEAP64 = new BigInt64Array(b);
-  {{{ maybeExportHeap('HEAPU64') }}}HEAPU64 = new BigUint64Array(b);
+  {{{ updateHeap('HEAP64',  'BigInt64Array') }}}
+  {{{ updateHeap('HEAPU64', 'BigUint64Array') }}}
 #endif
 #if SUPPORT_BIG_ENDIAN
   {{{ maybeExportHeap('HEAP_DATA_VIEW') }}} HEAP_DATA_VIEW = new DataView(b);
diff --git a/src/settings_internal.js b/src/settings_internal.js
index 3b425fccba8bf..7405b50118136 100644
--- a/src/settings_internal.js
+++ b/src/settings_internal.js
@@ -295,5 +295,11 @@ var LOAD_SOURCE_MAP = false;
 
 var ALIASES = [];
 
+// Internal setting for passing EM_JS and EM_ASM function code snippets to JSifier so that
+// implicit heap dependencies (e.g. HEAP8, HEAP32) can be scanned and included automatically
+// without needing to search for them in Python.
+// This could be removed if/when we require explicit heap dependencies (via EM_JS_DEPS).
+var EM_JS_SNIPPETS = [];
+
 // List of public setting names (Used by RETAIN_COMPILER_SETTINGS)
 var PUBLIC_SETTINGS = [];
diff --git a/test/codesize/audio_worklet_wasm.expected.js b/test/codesize/audio_worklet_wasm.expected.js
index 9ed7b1108c88e..ef048b80670f1 100644
--- a/test/codesize/audio_worklet_wasm.expected.js
+++ b/test/codesize/audio_worklet_wasm.expected.js
@@ -1,4 +1,4 @@
-var m = globalThis.Module || typeof Module != "undefined" ? Module : {}, r = !!globalThis.WorkerGlobalScope, t = !!globalThis.AudioWorkletGlobalScope, u = globalThis.name == "em-ww" || t, v, K, E, G, J, x, W, P, F, D, C, X, A, Z, H;
+var m = globalThis.Module || typeof Module != "undefined" ? Module : {}, r = !!globalThis.WorkerGlobalScope, t = !!globalThis.AudioWorkletGlobalScope, u = globalThis.name == "em-ww" || t, v, x, J, K, G, E, W, P, F, D, C, X, A, Z, H;
 
 function w(a) {
     v = a;
diff --git a/test/codesize/hello_wasm_worker_wasm.expected.js b/test/codesize/hello_wasm_worker_wasm.expected.js
index a212f66c66b87..5fc571366f86b 100644
--- a/test/codesize/hello_wasm_worker_wasm.expected.js
+++ b/test/codesize/hello_wasm_worker_wasm.expected.js
@@ -1,80 +1,77 @@
-var c = Module, d = !!globalThis.WorkerGlobalScope, e = globalThis.name == "em-ww", f, g, C, q, D, m, E, v;
+var c = Module, d = !!globalThis.WorkerGlobalScope, e = globalThis.name == "em-ww", f, g, B, p, C, l, D, u;
 
 e && (onmessage = a => {
     onmessage = null;
     f = a = a.data;
     g = a.o;
-    h();
     c ||= {};
     c.wasm = a.m;
-    k();
+    h();
     a.m = a.o = 0;
 });
 
-function h() {}
-
 e || (g = new WebAssembly.Memory({
     initial: 256,
     maximum: 256,
     shared: !0
-}), h());
+}));
 
-var l = [], n = a => {
+var k = [], m = a => {
     a = a.data;
     var b = a._wsc;
-    b && m.get(b)(...a.x);
-}, p = a => {
-    l.push(a);
-}, r = () => {
-    q(0, !d, !e, d && 1);
-}, u = {}, w = (a, b, z) => {
-    var t = u[a] = new Worker(c.js, {
+    b && l.get(b)(...a.x);
+}, n = a => {
+    k.push(a);
+}, q = () => {
+    p(0, !d, !e, d && 1);
+}, t = {}, v = (a, b, y) => {
+    var r = t[a] = new Worker(c.js, {
         name: "em-ww"
     });
-    t.postMessage({
+    r.postMessage({
         A: a,
-        m: v,
+        m: u,
         o: g,
         u: b,
-        v: z
+        v: y
     });
-    t.onmessage = n;
+    r.onmessage = m;
     return !0;
-}, x = () => performance.now(), y = () => !1, A = (a, b) => {
-    u[a].postMessage({
+}, w = () => performance.now(), x = () => !1, z = (a, b) => {
+    t[a].postMessage({
         _wsc: b,
         x: []
     });
 };
 
-e && (u[0] = globalThis, addEventListener("message", p));
+e && (t[0] = globalThis, addEventListener("message", n));
 
-function B() {
+function A() {
     console.log("Hello from wasm worker!");
 }
 
-function k() {
-    E = {
-        d: r,
-        c: w,
-        b: x,
-        e: y,
-        f: A,
-        g: B,
+function h() {
+    D = {
+        d: q,
+        c: v,
+        b: w,
+        e: x,
+        f: z,
+        g: A,
         a: g
     };
     WebAssembly.instantiate(c.wasm, {
-        a: E
+        a: D
     }).then((a => {
         var b = (a.instance || a).exports;
-        v = a.module || c.wasm;
-        C = b.i;
-        q = b.k;
-        D = b.l;
-        m = b.j;
-        e ? (D(f.A, f.u, f.v), removeEventListener("message", p), l = l.forEach(n), addEventListener("message", n)) : b.h();
-        e || C();
+        u = a.module || c.wasm;
+        B = b.i;
+        p = b.k;
+        C = b.l;
+        l = b.j;
+        e ? (C(f.A, f.u, f.v), removeEventListener("message", n), k = k.forEach(m), addEventListener("message", m)) : b.h();
+        e || B();
     }));
 }
 
-e || k();
\ No newline at end of file
+e || h();
\ No newline at end of file
diff --git a/test/codesize/hello_world_wasm.expected.js b/test/codesize/hello_world_wasm.expected.js
index cb72d2838de31..1cd54e114ae98 100644
--- a/test/codesize/hello_world_wasm.expected.js
+++ b/test/codesize/hello_world_wasm.expected.js
@@ -1,21 +1,21 @@
-var d = Module, e, f = new TextDecoder, g, h;
+var c = Module, d = new TextDecoder, e, f, h;
 
-WebAssembly.instantiate(d.wasm, {
+WebAssembly.instantiate(c.wasm, {
     a: {
         a: a => {
-            var c = console, k = c.log;
+            var g = console, k = g.log;
             if (a) {
                 for (var b = a, l = e, m = b + NaN; l[b] && !(b >= m); ) ++b;
-                a = f.decode(e.subarray(a, b));
+                a = d.decode(e.subarray(a, b));
             } else a = "";
-            k.call(c, a);
+            k.call(g, a);
         }
     }
 }).then((a => {
     a = a.instance.exports;
-    g = a.d;
+    f = a.d;
     h = a.b;
     e = new Uint8Array(h.buffer);
     a.c();
-    g();
+    f();
 }));
\ No newline at end of file
diff --git a/test/codesize/hello_world_wasm2js.expected.js b/test/codesize/hello_world_wasm2js.expected.js
index d23d8bf32480c..5593170066940 100644
--- a/test/codesize/hello_world_wasm2js.expected.js
+++ b/test/codesize/hello_world_wasm2js.expected.js
@@ -1,4 +1,4 @@
-var d = Module, g, h = new TextDecoder, k, l;
+var d = Module, g = new TextDecoder, h, k, l;
 
 function e(a) {
     this.exports = function(q) {
@@ -48,8 +48,8 @@ function e(a) {
         a: a => {
             var q = console, u = q.log;
             if (a) {
-                for (var n = a, c = g, f = n + void 0; c[n] && !(n >= f); ) ++n;
-                a = h.decode(g.subarray(a, n));
+                for (var n = a, c = h, f = n + void 0; c[n] && !(n >= f); ) ++n;
+                a = g.decode(h.subarray(a, n));
             } else a = "";
             u.call(q, a);
         }
@@ -58,7 +58,7 @@ function e(a) {
     a = a.instance.exports;
     k = a.d;
     l = a.b;
-    g = new Uint8Array(l.buffer);
+    h = new Uint8Array(l.buffer);
     a.c();
     k();
 }));
\ No newline at end of file
diff --git a/test/codesize/test_codesize_cxx_ctors1.json b/test/codesize/test_codesize_cxx_ctors1.json
index 38da5d7d240f5..cba785f32563f 100644
--- a/test/codesize/test_codesize_cxx_ctors1.json
+++ b/test/codesize/test_codesize_cxx_ctors1.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19183,
-  "a.out.js.gz": 7971,
+  "a.out.js": 19083,
+  "a.out.js.gz": 7947,
   "a.out.nodebug.wasm": 132603,
   "a.out.nodebug.wasm.gz": 49939,
-  "total": 151786,
-  "total_gz": 57910,
+  "total": 151686,
+  "total_gz": 57886,
   "sent": [
     "__cxa_throw",
     "_abort_js",
diff --git a/test/codesize/test_codesize_cxx_ctors2.json b/test/codesize/test_codesize_cxx_ctors2.json
index a258ca20a58e8..fb5139bc4cbb5 100644
--- a/test/codesize/test_codesize_cxx_ctors2.json
+++ b/test/codesize/test_codesize_cxx_ctors2.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19160,
-  "a.out.js.gz": 7957,
+  "a.out.js": 19060,
+  "a.out.js.gz": 7931,
   "a.out.nodebug.wasm": 132029,
   "a.out.nodebug.wasm.gz": 49599,
-  "total": 151189,
-  "total_gz": 57556,
+  "total": 151089,
+  "total_gz": 57530,
   "sent": [
     "__cxa_throw",
     "_abort_js",
diff --git a/test/codesize/test_codesize_cxx_except.json b/test/codesize/test_codesize_cxx_except.json
index a66355c6521fc..59681c646d649 100644
--- a/test/codesize/test_codesize_cxx_except.json
+++ b/test/codesize/test_codesize_cxx_except.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 23158,
-  "a.out.js.gz": 8955,
+  "a.out.js": 23059,
+  "a.out.js.gz": 8939,
   "a.out.nodebug.wasm": 172523,
   "a.out.nodebug.wasm.gz": 57480,
-  "total": 195681,
-  "total_gz": 66435,
+  "total": 195582,
+  "total_gz": 66419,
   "sent": [
     "__cxa_begin_catch",
     "__cxa_end_catch",
diff --git a/test/codesize/test_codesize_cxx_except_wasm.json b/test/codesize/test_codesize_cxx_except_wasm.json
index d6477ceb081bf..3ccfc0e49bdec 100644
--- a/test/codesize/test_codesize_cxx_except_wasm.json
+++ b/test/codesize/test_codesize_cxx_except_wasm.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 18982,
-  "a.out.js.gz": 7888,
+  "a.out.js": 18882,
+  "a.out.js.gz": 7863,
   "a.out.nodebug.wasm": 147928,
   "a.out.nodebug.wasm.gz": 55349,
-  "total": 166910,
-  "total_gz": 63237,
+  "total": 166810,
+  "total_gz": 63212,
   "sent": [
     "_abort_js",
     "_tzset_js",
diff --git a/test/codesize/test_codesize_cxx_except_wasm_legacy.json b/test/codesize/test_codesize_cxx_except_wasm_legacy.json
index 19e47699182eb..3221d5672f5e9 100644
--- a/test/codesize/test_codesize_cxx_except_wasm_legacy.json
+++ b/test/codesize/test_codesize_cxx_except_wasm_legacy.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19060,
-  "a.out.js.gz": 7913,
+  "a.out.js": 18960,
+  "a.out.js.gz": 7888,
   "a.out.nodebug.wasm": 145734,
   "a.out.nodebug.wasm.gz": 54976,
-  "total": 164794,
-  "total_gz": 62889,
+  "total": 164694,
+  "total_gz": 62864,
   "sent": [
     "_abort_js",
     "_tzset_js",
diff --git a/test/codesize/test_codesize_cxx_lto.json b/test/codesize/test_codesize_cxx_lto.json
index 249afc77b84a9..66faff6a2b947 100644
--- a/test/codesize/test_codesize_cxx_lto.json
+++ b/test/codesize/test_codesize_cxx_lto.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 18526,
-  "a.out.js.gz": 7665,
+  "a.out.js": 18426,
+  "a.out.js.gz": 7640,
   "a.out.nodebug.wasm": 102090,
   "a.out.nodebug.wasm.gz": 39548,
-  "total": 120616,
-  "total_gz": 47213,
+  "total": 120516,
+  "total_gz": 47188,
   "sent": [
     "a (emscripten_resize_heap)",
     "b (_setitimer_js)",
diff --git a/test/codesize/test_codesize_cxx_mangle.json b/test/codesize/test_codesize_cxx_mangle.json
index f0ff9ccf46ce5..3e02365278def 100644
--- a/test/codesize/test_codesize_cxx_mangle.json
+++ b/test/codesize/test_codesize_cxx_mangle.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 23208,
-  "a.out.js.gz": 8976,
+  "a.out.js": 23109,
+  "a.out.js.gz": 8957,
   "a.out.nodebug.wasm": 238952,
   "a.out.nodebug.wasm.gz": 79833,
-  "total": 262160,
-  "total_gz": 88809,
+  "total": 262061,
+  "total_gz": 88790,
   "sent": [
     "__cxa_begin_catch",
     "__cxa_end_catch",
diff --git a/test/codesize/test_codesize_cxx_noexcept.json b/test/codesize/test_codesize_cxx_noexcept.json
index 9663f0ff6a578..2ad89c9128e6c 100644
--- a/test/codesize/test_codesize_cxx_noexcept.json
+++ b/test/codesize/test_codesize_cxx_noexcept.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 19183,
-  "a.out.js.gz": 7971,
+  "a.out.js": 19083,
+  "a.out.js.gz": 7947,
   "a.out.nodebug.wasm": 134603,
   "a.out.nodebug.wasm.gz": 50779,
-  "total": 153786,
-  "total_gz": 58750,
+  "total": 153686,
+  "total_gz": 58726,
   "sent": [
     "__cxa_throw",
     "_abort_js",
diff --git a/test/codesize/test_codesize_cxx_wasmfs.json b/test/codesize/test_codesize_cxx_wasmfs.json
index 27884b4e8620d..7cadfbb19effa 100644
--- a/test/codesize/test_codesize_cxx_wasmfs.json
+++ b/test/codesize/test_codesize_cxx_wasmfs.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 6725,
-  "a.out.js.gz": 3184,
+  "a.out.js": 6604,
+  "a.out.js.gz": 3154,
   "a.out.nodebug.wasm": 172829,
   "a.out.nodebug.wasm.gz": 63329,
-  "total": 179554,
-  "total_gz": 66513,
+  "total": 179433,
+  "total_gz": 66483,
   "sent": [
     "__cxa_throw",
     "_abort_js",
diff --git a/test/codesize/test_codesize_file_preload.expected.js b/test/codesize/test_codesize_file_preload.expected.js
index 97ef63fcb0f09..511f381401533 100644
--- a/test/codesize/test_codesize_file_preload.expected.js
+++ b/test/codesize/test_codesize_file_preload.expected.js
@@ -317,15 +317,10 @@ var runtimeInitialized = false;
 function updateMemoryViews() {
   var b = wasmMemory.buffer;
   HEAP8 = new Int8Array(b);
-  HEAP16 = new Int16Array(b);
   HEAPU8 = new Uint8Array(b);
-  HEAPU16 = new Uint16Array(b);
   HEAP32 = new Int32Array(b);
   HEAPU32 = new Uint32Array(b);
-  HEAPF32 = new Float32Array(b);
-  HEAPF64 = new Float64Array(b);
   HEAP64 = new BigInt64Array(b);
-  HEAPU64 = new BigUint64Array(b);
 }
 
 // include: memoryprofiler.js
@@ -484,26 +479,6 @@ class ExitStatus {
   }
 }
 
-/** @type {!Int16Array} */ var HEAP16;
-
-/** @type {!Int32Array} */ var HEAP32;
-
-/** not-@type {!BigInt64Array} */ var HEAP64;
-
-/** @type {!Int8Array} */ var HEAP8;
-
-/** @type {!Float32Array} */ var HEAPF32;
-
-/** @type {!Float64Array} */ var HEAPF64;
-
-/** @type {!Uint16Array} */ var HEAPU16;
-
-/** @type {!Uint32Array} */ var HEAPU32;
-
-/** not-@type {!BigUint64Array} */ var HEAPU64;
-
-/** @type {!Uint8Array} */ var HEAPU8;
-
 var callRuntimeCallbacks = callbacks => {
   while (callbacks.length > 0) {
     // Pass the module as the first argument.
@@ -513,6 +488,10 @@ var callRuntimeCallbacks = callbacks => {
 
 var onPreRuns = [];
 
+/** @type {!Int8Array} */ var HEAP8;
+
+/** @type {!Uint32Array} */ var HEAPU32;
+
 /** @param {number=} offset */ var doWritev = (stream, iov, iovcnt, offset) => {
   var ret = 0;
   for (var i = 0; i < iovcnt; i++) {
@@ -3032,6 +3011,8 @@ var FS = {
   }
 };
 
+/** @type {!Uint8Array} */ var HEAPU8;
+
 /**
    * Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the
    * emscripten HEAP, returns a copy of that string as a Javascript String object.
@@ -3046,6 +3027,10 @@ var FS = {
    * @return {string}
    */ var UTF8ToString = (ptr, maxBytesToRead, ignoreNul) => ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead, ignoreNul) : "";
 
+/** @type {!Int32Array} */ var HEAP32;
+
+/** not-@type {!BigInt64Array} */ var HEAP64;
+
 var SYSCALLS = {
   currentUmask: 18,
   calculateAt(dirfd, path, allowEmpty) {
diff --git a/test/codesize/test_codesize_file_preload.json b/test/codesize/test_codesize_file_preload.json
index 8f618f019aa71..26fc198071093 100644
--- a/test/codesize/test_codesize_file_preload.json
+++ b/test/codesize/test_codesize_file_preload.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 22239,
-  "a.out.js.gz": 9251,
+  "a.out.js": 22140,
+  "a.out.js.gz": 9232,
   "a.out.nodebug.wasm": 1666,
   "a.out.nodebug.wasm.gz": 945,
-  "total": 23905,
-  "total_gz": 10196,
+  "total": 23806,
+  "total_gz": 10177,
   "sent": [
     "a (fd_write)"
   ],
diff --git a/test/codesize/test_codesize_files_js_fs.json b/test/codesize/test_codesize_files_js_fs.json
index 3ff56a1152b6e..f0d4e516fad78 100644
--- a/test/codesize/test_codesize_files_js_fs.json
+++ b/test/codesize/test_codesize_files_js_fs.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 17831,
-  "a.out.js.gz": 7311,
+  "a.out.js": 17731,
+  "a.out.js.gz": 7292,
   "a.out.nodebug.wasm": 381,
   "a.out.nodebug.wasm.gz": 258,
-  "total": 18212,
-  "total_gz": 7569,
+  "total": 18112,
+  "total_gz": 7550,
   "sent": [
     "a (fd_write)",
     "b (fd_read)",
diff --git a/test/codesize/test_codesize_files_wasmfs.json b/test/codesize/test_codesize_files_wasmfs.json
index f5c6388f137c7..9f01cfea58449 100644
--- a/test/codesize/test_codesize_files_wasmfs.json
+++ b/test/codesize/test_codesize_files_wasmfs.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 5158,
-  "a.out.js.gz": 2458,
+  "a.out.js": 4979,
+  "a.out.js.gz": 2409,
   "a.out.nodebug.wasm": 58606,
   "a.out.nodebug.wasm.gz": 18406,
-  "total": 63764,
-  "total_gz": 20864,
+  "total": 63585,
+  "total_gz": 20815,
   "sent": [
     "a (emscripten_date_now)",
     "b (emscripten_err)",
diff --git a/test/codesize/test_codesize_hello_O0.json b/test/codesize/test_codesize_hello_O0.json
index fa5e682019094..f12bd41a404ed 100644
--- a/test/codesize/test_codesize_hello_O0.json
+++ b/test/codesize/test_codesize_hello_O0.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 23586,
-  "a.out.js.gz": 8615,
+  "a.out.js": 23439,
+  "a.out.js.gz": 8583,
   "a.out.nodebug.wasm": 15115,
   "a.out.nodebug.wasm.gz": 7464,
-  "total": 38701,
-  "total_gz": 16079,
+  "total": 38554,
+  "total_gz": 16047,
   "sent": [
     "fd_write"
   ],
diff --git a/test/codesize/test_codesize_hello_O1.json b/test/codesize/test_codesize_hello_O1.json
index a1aad3d6c2fd1..be7c4fe9daa15 100644
--- a/test/codesize/test_codesize_hello_O1.json
+++ b/test/codesize/test_codesize_hello_O1.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 5717,
-  "a.out.js.gz": 2279,
+  "a.out.js": 5522,
+  "a.out.js.gz": 2239,
   "a.out.nodebug.wasm": 2544,
   "a.out.nodebug.wasm.gz": 1436,
-  "total": 8261,
-  "total_gz": 3715,
+  "total": 8066,
+  "total_gz": 3675,
   "sent": [
     "fd_write"
   ],
diff --git a/test/codesize/test_codesize_hello_O2.json b/test/codesize/test_codesize_hello_O2.json
index b42281069ef1f..ba874758500df 100644
--- a/test/codesize/test_codesize_hello_O2.json
+++ b/test/codesize/test_codesize_hello_O2.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 4015,
-  "a.out.js.gz": 2014,
+  "a.out.js": 3859,
+  "a.out.js.gz": 1970,
   "a.out.nodebug.wasm": 1912,
   "a.out.nodebug.wasm.gz": 1129,
-  "total": 5927,
-  "total_gz": 3143,
+  "total": 5771,
+  "total_gz": 3099,
   "sent": [
     "fd_write"
   ],
diff --git a/test/codesize/test_codesize_hello_O3.json b/test/codesize/test_codesize_hello_O3.json
index 4b0f47f84662e..be2ba272d7006 100644
--- a/test/codesize/test_codesize_hello_O3.json
+++ b/test/codesize/test_codesize_hello_O3.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3956,
-  "a.out.js.gz": 1971,
+  "a.out.js": 3801,
+  "a.out.js.gz": 1928,
   "a.out.nodebug.wasm": 1666,
   "a.out.nodebug.wasm.gz": 945,
-  "total": 5622,
-  "total_gz": 2916,
+  "total": 5467,
+  "total_gz": 2873,
   "sent": [
     "a (fd_write)"
   ],
diff --git a/test/codesize/test_codesize_hello_Os.json b/test/codesize/test_codesize_hello_Os.json
index f47b9a846859a..71749bb323745 100644
--- a/test/codesize/test_codesize_hello_Os.json
+++ b/test/codesize/test_codesize_hello_Os.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3956,
-  "a.out.js.gz": 1971,
+  "a.out.js": 3801,
+  "a.out.js.gz": 1928,
   "a.out.nodebug.wasm": 1654,
   "a.out.nodebug.wasm.gz": 953,
-  "total": 5610,
-  "total_gz": 2924,
+  "total": 5455,
+  "total_gz": 2881,
   "sent": [
     "a (fd_write)"
   ],
diff --git a/test/codesize/test_codesize_hello_Oz.json b/test/codesize/test_codesize_hello_Oz.json
index 3892ef01ed941..85d5d192a160a 100644
--- a/test/codesize/test_codesize_hello_Oz.json
+++ b/test/codesize/test_codesize_hello_Oz.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3593,
-  "a.out.js.gz": 1776,
+  "a.out.js": 3438,
+  "a.out.js.gz": 1732,
   "a.out.nodebug.wasm": 1188,
   "a.out.nodebug.wasm.gz": 731,
-  "total": 4781,
-  "total_gz": 2507,
+  "total": 4626,
+  "total_gz": 2463,
   "sent": [
     "a (fd_write)"
   ],
diff --git a/test/codesize/test_codesize_hello_dylink.json b/test/codesize/test_codesize_hello_dylink.json
index bca58fb7b3b36..1d3e653fe0749 100644
--- a/test/codesize/test_codesize_hello_dylink.json
+++ b/test/codesize/test_codesize_hello_dylink.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 26190,
-  "a.out.js.gz": 11198,
+  "a.out.js": 26191,
+  "a.out.js.gz": 11201,
   "a.out.nodebug.wasm": 17861,
   "a.out.nodebug.wasm.gz": 9019,
-  "total": 44051,
-  "total_gz": 20217,
+  "total": 44052,
+  "total_gz": 20220,
   "sent": [
     "__syscall_stat64",
     "emscripten_resize_heap",
diff --git a/test/codesize/test_codesize_hello_export_nothing.json b/test/codesize/test_codesize_hello_export_nothing.json
index 92943bc741178..c4012b3373c4f 100644
--- a/test/codesize/test_codesize_hello_export_nothing.json
+++ b/test/codesize/test_codesize_hello_export_nothing.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2856,
-  "a.out.js.gz": 1359,
+  "a.out.js": 2642,
+  "a.out.js.gz": 1290,
   "a.out.nodebug.wasm": 43,
   "a.out.nodebug.wasm.gz": 59,
-  "total": 2899,
-  "total_gz": 1418,
+  "total": 2685,
+  "total_gz": 1349,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_hello_single_file.json b/test/codesize/test_codesize_hello_single_file.json
index c8a0a2a0ac36e..5903fc859d0f6 100644
--- a/test/codesize/test_codesize_hello_single_file.json
+++ b/test/codesize/test_codesize_hello_single_file.json
@@ -1,6 +1,6 @@
 {
-  "a.out.js": 5008,
-  "a.out.js.gz": 2793,
+  "a.out.js": 4853,
+  "a.out.js.gz": 2750,
   "sent": [
     "a (fd_write)"
   ]
diff --git a/test/codesize/test_codesize_hello_wasmfs.json b/test/codesize/test_codesize_hello_wasmfs.json
index 4b0f47f84662e..be2ba272d7006 100644
--- a/test/codesize/test_codesize_hello_wasmfs.json
+++ b/test/codesize/test_codesize_hello_wasmfs.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3956,
-  "a.out.js.gz": 1971,
+  "a.out.js": 3801,
+  "a.out.js.gz": 1928,
   "a.out.nodebug.wasm": 1666,
   "a.out.nodebug.wasm.gz": 945,
-  "total": 5622,
-  "total_gz": 2916,
+  "total": 5467,
+  "total_gz": 2873,
   "sent": [
     "a (fd_write)"
   ],
diff --git a/test/codesize/test_codesize_libcxxabi_message_O3.json b/test/codesize/test_codesize_libcxxabi_message_O3.json
index 767a0d4b776fe..a3d564f5f2563 100644
--- a/test/codesize/test_codesize_libcxxabi_message_O3.json
+++ b/test/codesize/test_codesize_libcxxabi_message_O3.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3223,
-  "a.out.js.gz": 1545,
+  "a.out.js": 3010,
+  "a.out.js.gz": 1480,
   "a.out.nodebug.wasm": 89,
   "a.out.nodebug.wasm.gz": 98,
-  "total": 3312,
-  "total_gz": 1643,
+  "total": 3099,
+  "total_gz": 1578,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_libcxxabi_message_O3_standalone.json b/test/codesize/test_codesize_libcxxabi_message_O3_standalone.json
index 2d66550fe7101..7582dfb485e0e 100644
--- a/test/codesize/test_codesize_libcxxabi_message_O3_standalone.json
+++ b/test/codesize/test_codesize_libcxxabi_message_O3_standalone.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3271,
-  "a.out.js.gz": 1579,
+  "a.out.js": 3158,
+  "a.out.js.gz": 1555,
   "a.out.nodebug.wasm": 222,
   "a.out.nodebug.wasm.gz": 206,
-  "total": 3493,
-  "total_gz": 1785,
+  "total": 3380,
+  "total_gz": 1761,
   "sent": [
     "proc_exit"
   ],
diff --git a/test/codesize/test_codesize_mem_O3.json b/test/codesize/test_codesize_mem_O3.json
index b8826edc16c2e..b88e76157cbb1 100644
--- a/test/codesize/test_codesize_mem_O3.json
+++ b/test/codesize/test_codesize_mem_O3.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 4030,
-  "a.out.js.gz": 1966,
+  "a.out.js": 3936,
+  "a.out.js.gz": 1945,
   "a.out.nodebug.wasm": 5260,
   "a.out.nodebug.wasm.gz": 2419,
-  "total": 9290,
-  "total_gz": 4385,
+  "total": 9196,
+  "total_gz": 4364,
   "sent": [
     "a (emscripten_resize_heap)"
   ],
diff --git a/test/codesize/test_codesize_mem_O3_grow.json b/test/codesize/test_codesize_mem_O3_grow.json
index f6bd386c93d8a..4c76b61e549d0 100644
--- a/test/codesize/test_codesize_mem_O3_grow.json
+++ b/test/codesize/test_codesize_mem_O3_grow.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 4347,
-  "a.out.js.gz": 2138,
+  "a.out.js": 4278,
+  "a.out.js.gz": 2123,
   "a.out.nodebug.wasm": 5261,
   "a.out.nodebug.wasm.gz": 2419,
-  "total": 9608,
-  "total_gz": 4557,
+  "total": 9539,
+  "total_gz": 4542,
   "sent": [
     "a (emscripten_resize_heap)"
   ],
diff --git a/test/codesize/test_codesize_mem_O3_grow_standalone.json b/test/codesize/test_codesize_mem_O3_grow_standalone.json
index 3190458c7ceae..38a3ec52a1489 100644
--- a/test/codesize/test_codesize_mem_O3_grow_standalone.json
+++ b/test/codesize/test_codesize_mem_O3_grow_standalone.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3813,
-  "a.out.js.gz": 1874,
+  "a.out.js": 3741,
+  "a.out.js.gz": 1859,
   "a.out.nodebug.wasm": 5641,
   "a.out.nodebug.wasm.gz": 2659,
-  "total": 9454,
-  "total_gz": 4533,
+  "total": 9382,
+  "total_gz": 4518,
   "sent": [
     "args_get",
     "args_sizes_get",
diff --git a/test/codesize/test_codesize_mem_O3_standalone.json b/test/codesize/test_codesize_mem_O3_standalone.json
index bca2761225edb..c423ccbfaed0b 100644
--- a/test/codesize/test_codesize_mem_O3_standalone.json
+++ b/test/codesize/test_codesize_mem_O3_standalone.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3724,
-  "a.out.js.gz": 1822,
+  "a.out.js": 3628,
+  "a.out.js.gz": 1803,
   "a.out.nodebug.wasm": 5565,
   "a.out.nodebug.wasm.gz": 2598,
-  "total": 9289,
-  "total_gz": 4420,
+  "total": 9193,
+  "total_gz": 4401,
   "sent": [
     "args_get",
     "args_sizes_get",
diff --git a/test/codesize/test_codesize_mem_O3_standalone_lib.json b/test/codesize/test_codesize_mem_O3_standalone_lib.json
index 874a6a5510cb9..b9429c483376d 100644
--- a/test/codesize/test_codesize_mem_O3_standalone_lib.json
+++ b/test/codesize/test_codesize_mem_O3_standalone_lib.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3264,
-  "a.out.js.gz": 1571,
+  "a.out.js": 3151,
+  "a.out.js.gz": 1548,
   "a.out.nodebug.wasm": 5239,
   "a.out.nodebug.wasm.gz": 2359,
-  "total": 8503,
-  "total_gz": 3930,
+  "total": 8390,
+  "total_gz": 3907,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_mem_O3_standalone_narg.json b/test/codesize/test_codesize_mem_O3_standalone_narg.json
index acb2104805bc2..9c32bec0d90ab 100644
--- a/test/codesize/test_codesize_mem_O3_standalone_narg.json
+++ b/test/codesize/test_codesize_mem_O3_standalone_narg.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3271,
-  "a.out.js.gz": 1579,
+  "a.out.js": 3158,
+  "a.out.js.gz": 1555,
   "a.out.nodebug.wasm": 5354,
   "a.out.nodebug.wasm.gz": 2442,
-  "total": 8625,
-  "total_gz": 4021,
+  "total": 8512,
+  "total_gz": 3997,
   "sent": [
     "proc_exit"
   ],
diff --git a/test/codesize/test_codesize_mem_O3_standalone_narg_flto.json b/test/codesize/test_codesize_mem_O3_standalone_narg_flto.json
index 4fd05e77f282b..7ca5726e90dc9 100644
--- a/test/codesize/test_codesize_mem_O3_standalone_narg_flto.json
+++ b/test/codesize/test_codesize_mem_O3_standalone_narg_flto.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 3271,
-  "a.out.js.gz": 1579,
+  "a.out.js": 3158,
+  "a.out.js.gz": 1555,
   "a.out.nodebug.wasm": 4285,
   "a.out.nodebug.wasm.gz": 2142,
-  "total": 7556,
-  "total_gz": 3721,
+  "total": 7443,
+  "total_gz": 3697,
   "sent": [
     "proc_exit"
   ],
diff --git a/test/codesize/test_codesize_minimal_64.json b/test/codesize/test_codesize_minimal_64.json
index 73afa227590d6..337855a8c4b26 100644
--- a/test/codesize/test_codesize_minimal_64.json
+++ b/test/codesize/test_codesize_minimal_64.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2525,
-  "a.out.js.gz": 1200,
+  "a.out.js": 2313,
+  "a.out.js.gz": 1138,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 88,
-  "total": 2600,
-  "total_gz": 1288,
+  "total": 2388,
+  "total_gz": 1226,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_O0.expected.js b/test/codesize/test_codesize_minimal_O0.expected.js
index f768e93cd3692..185318708bbb8 100644
--- a/test/codesize/test_codesize_minimal_O0.expected.js
+++ b/test/codesize/test_codesize_minimal_O0.expected.js
@@ -487,18 +487,18 @@ var runtimeInitialized = false;
 
 function updateMemoryViews() {
   // When memory growth is disabled this function should be called exactly once.
-  assert(!HEAP8, 'updateMemoryViews should only be called once when ALLOW_MEMORY_GROWTH=0');
+  assert(typeof HEAP8 == 'undefined' || !HEAP8, 'updateMemoryViews should only be called once when ALLOW_MEMORY_GROWTH=0');
   var b = wasmMemory.buffer;
-  HEAP8 = new Int8Array(b);
-  HEAP16 = new Int16Array(b);
-  HEAPU8 = new Uint8Array(b);
-  HEAPU16 = new Uint16Array(b);
+  
+  
+  
+  
   HEAP32 = new Int32Array(b);
   HEAPU32 = new Uint32Array(b);
-  HEAPF32 = new Float32Array(b);
-  HEAPF64 = new Float64Array(b);
-  HEAP64 = new BigInt64Array(b);
-  HEAPU64 = new BigUint64Array(b);
+  
+  
+  
+  
 }
 
 // include: memoryprofiler.js
@@ -728,36 +728,6 @@ async function createWasm() {
       }
     }
 
-  /** @type {!Int16Array} */
-  var HEAP16;
-
-  /** @type {!Int32Array} */
-  var HEAP32;
-
-  /** not-@type {!BigInt64Array} */
-  var HEAP64;
-
-  /** @type {!Int8Array} */
-  var HEAP8;
-
-  /** @type {!Float32Array} */
-  var HEAPF32;
-
-  /** @type {!Float64Array} */
-  var HEAPF64;
-
-  /** @type {!Uint16Array} */
-  var HEAPU16;
-
-  /** @type {!Uint32Array} */
-  var HEAPU32;
-
-  /** not-@type {!BigUint64Array} */
-  var HEAPU64;
-
-  /** @type {!Uint8Array} */
-  var HEAPU8;
-
   var callRuntimeCallbacks = (callbacks) => {
       while (callbacks.length > 0) {
         // Pass the module as the first argument.
@@ -765,26 +735,6 @@ async function createWasm() {
       }
     };
 
-  
-    /**
-   * @param {number} ptr
-   * @param {string} type
-   */
-  function getValue(ptr, type = 'i8') {
-    if (type.endsWith('*')) type = '*';
-    switch (type) {
-      case 'i1': return HEAP8[ptr];
-      case 'i8': return HEAP8[ptr];
-      case 'i16': return HEAP16[((ptr)>>1)];
-      case 'i32': return HEAP32[((ptr)>>2)];
-      case 'i64': return HEAP64[((ptr)>>3)];
-      case 'float': return HEAPF32[((ptr)>>2)];
-      case 'double': return HEAPF64[((ptr)>>3)];
-      case '*': return HEAPU32[((ptr)>>2)];
-      default: abort(`invalid type for getValue: ${type}`);
-    }
-  }
-
   function ptrToString(ptr) {
       assert(typeof ptr === 'number', `ptrToString expects a number, got ${typeof ptr}`);
       // Convert to 32-bit unsigned value
@@ -792,27 +742,6 @@ async function createWasm() {
       return '0x' + ptr.toString(16).padStart(8, '0');
     }
 
-  
-    /**
-   * @param {number} ptr
-   * @param {number} value
-   * @param {string} type
-   */
-  function setValue(ptr, value, type = 'i8') {
-    if (type.endsWith('*')) type = '*';
-    switch (type) {
-      case 'i1': HEAP8[ptr] = value; break;
-      case 'i8': HEAP8[ptr] = value; break;
-      case 'i16': HEAP16[((ptr)>>1)] = value; break;
-      case 'i32': HEAP32[((ptr)>>2)] = value; break;
-      case 'i64': HEAP64[((ptr)>>3)] = BigInt(value); break;
-      case 'float': HEAPF32[((ptr)>>2)] = value; break;
-      case 'double': HEAPF64[((ptr)>>3)] = value; break;
-      case '*': HEAPU32[((ptr)>>2)] = value; break;
-      default: abort(`invalid type for setValue: ${type}`);
-    }
-  }
-
   var stackRestore = (val) => __emscripten_stack_restore(val);
 
   var stackSave = () => _emscripten_stack_get_current();
@@ -827,6 +756,12 @@ async function createWasm() {
     };
 
   
+
+  /** @type {!Int32Array} */
+  var HEAP32;
+
+  /** @type {!Uint32Array} */
+  var HEAPU32;
 // End JS library code
 
 // include: postlibrary.js
@@ -933,6 +868,8 @@ Module['FS_createPreloadedFile'] = FS.createPreloadedFile;
   'getFunctionAddress',
   'addFunction',
   'removeFunction',
+  'setValue',
+  'getValue',
   'UTF8ArrayToString',
   'UTF8ToString',
   'stringToUTF8Array',
@@ -1069,8 +1006,6 @@ missingLibrarySymbols.forEach(missingLibrarySymbol)
   'noExitRuntime',
   'freeTableIndexes',
   'functionsInTableMap',
-  'setValue',
-  'getValue',
   'PATH',
   'PATH_FS',
   'UTF8Decoder',
diff --git a/test/codesize/test_codesize_minimal_O0.json b/test/codesize/test_codesize_minimal_O0.json
index 471feccf094c2..11a78d8cd2223 100644
--- a/test/codesize/test_codesize_minimal_O0.json
+++ b/test/codesize/test_codesize_minimal_O0.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 18790,
-  "a.out.js.gz": 6786,
+  "a.out.js": 18635,
+  "a.out.js.gz": 6759,
   "a.out.nodebug.wasm": 1015,
   "a.out.nodebug.wasm.gz": 602,
-  "total": 19805,
-  "total_gz": 7388,
+  "total": 19650,
+  "total_gz": 7361,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_O1.json b/test/codesize/test_codesize_minimal_O1.json
index 7614d27da4188..ed105fff59191 100644
--- a/test/codesize/test_codesize_minimal_O1.json
+++ b/test/codesize/test_codesize_minimal_O1.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2927,
-  "a.out.js.gz": 1237,
+  "a.out.js": 2670,
+  "a.out.js.gz": 1167,
   "a.out.nodebug.wasm": 449,
   "a.out.nodebug.wasm.gz": 337,
-  "total": 3376,
-  "total_gz": 1574,
+  "total": 3119,
+  "total_gz": 1504,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_O2.json b/test/codesize/test_codesize_minimal_O2.json
index 9bc333dc5260d..3436eb3b2d8eb 100644
--- a/test/codesize/test_codesize_minimal_O2.json
+++ b/test/codesize/test_codesize_minimal_O2.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2269,
-  "a.out.js.gz": 1125,
+  "a.out.js": 2052,
+  "a.out.js.gz": 1058,
   "a.out.nodebug.wasm": 280,
   "a.out.nodebug.wasm.gz": 226,
-  "total": 2549,
-  "total_gz": 1351,
+  "total": 2332,
+  "total_gz": 1284,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_O3.json b/test/codesize/test_codesize_minimal_O3.json
index 08e058c9cd5ad..5fe4c0860fef6 100644
--- a/test/codesize/test_codesize_minimal_O3.json
+++ b/test/codesize/test_codesize_minimal_O3.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2210,
-  "a.out.js.gz": 1089,
+  "a.out.js": 1998,
+  "a.out.js.gz": 1027,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 87,
-  "total": 2285,
-  "total_gz": 1176,
+  "total": 2073,
+  "total_gz": 1114,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_Os.json b/test/codesize/test_codesize_minimal_Os.json
index 08e058c9cd5ad..5fe4c0860fef6 100644
--- a/test/codesize/test_codesize_minimal_Os.json
+++ b/test/codesize/test_codesize_minimal_Os.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2210,
-  "a.out.js.gz": 1089,
+  "a.out.js": 1998,
+  "a.out.js.gz": 1027,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 87,
-  "total": 2285,
-  "total_gz": 1176,
+  "total": 2073,
+  "total_gz": 1114,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_Os_mr.json b/test/codesize/test_codesize_minimal_Os_mr.json
index 2f947a492386e..f4b4c13a25bde 100644
--- a/test/codesize/test_codesize_minimal_Os_mr.json
+++ b/test/codesize/test_codesize_minimal_Os_mr.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 502,
-  "a.out.js.gz": 299,
+  "a.out.js": 278,
+  "a.out.js.gz": 225,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 87,
-  "total": 577,
-  "total_gz": 386,
+  "total": 353,
+  "total_gz": 312,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_Oz-ctors.json b/test/codesize/test_codesize_minimal_Oz-ctors.json
index 1d23c0ca40143..01649ef200d36 100644
--- a/test/codesize/test_codesize_minimal_Oz-ctors.json
+++ b/test/codesize/test_codesize_minimal_Oz-ctors.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2192,
-  "a.out.js.gz": 1077,
+  "a.out.js": 1980,
+  "a.out.js.gz": 1012,
   "a.out.nodebug.wasm": 64,
   "a.out.nodebug.wasm.gz": 80,
-  "total": 2256,
-  "total_gz": 1157,
+  "total": 2044,
+  "total_gz": 1092,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_Oz.json b/test/codesize/test_codesize_minimal_Oz.json
index 08e058c9cd5ad..5fe4c0860fef6 100644
--- a/test/codesize/test_codesize_minimal_Oz.json
+++ b/test/codesize/test_codesize_minimal_Oz.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2210,
-  "a.out.js.gz": 1089,
+  "a.out.js": 1998,
+  "a.out.js.gz": 1027,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 87,
-  "total": 2285,
-  "total_gz": 1176,
+  "total": 2073,
+  "total_gz": 1114,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_esm.json b/test/codesize/test_codesize_minimal_esm.json
index eceee257497fd..fe01e4510c897 100644
--- a/test/codesize/test_codesize_minimal_esm.json
+++ b/test/codesize/test_codesize_minimal_esm.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2348,
-  "a.out.js.gz": 1111,
+  "a.out.js": 2137,
+  "a.out.js.gz": 1050,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 87,
-  "total": 2423,
-  "total_gz": 1198,
+  "total": 2212,
+  "total_gz": 1137,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_codesize_minimal_pthreads.json b/test/codesize/test_codesize_minimal_pthreads.json
index 6e1d93ed44b56..63dc7dfb19c00 100644
--- a/test/codesize/test_codesize_minimal_pthreads.json
+++ b/test/codesize/test_codesize_minimal_pthreads.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 6945,
-  "a.out.js.gz": 3424,
+  "a.out.js": 6849,
+  "a.out.js.gz": 3401,
   "a.out.nodebug.wasm": 19063,
   "a.out.nodebug.wasm.gz": 8803,
-  "total": 26008,
-  "total_gz": 12227,
+  "total": 25912,
+  "total_gz": 12204,
   "sent": [
     "a (memory)",
     "b (exit)",
diff --git a/test/codesize/test_codesize_minimal_pthreads_memgrowth.json b/test/codesize/test_codesize_minimal_pthreads_memgrowth.json
index a8cdb839d7f6d..255d27d1ee6ff 100644
--- a/test/codesize/test_codesize_minimal_pthreads_memgrowth.json
+++ b/test/codesize/test_codesize_minimal_pthreads_memgrowth.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 7379,
-  "a.out.js.gz": 3639,
+  "a.out.js": 7338,
+  "a.out.js.gz": 3628,
   "a.out.nodebug.wasm": 19064,
   "a.out.nodebug.wasm.gz": 8804,
-  "total": 26443,
-  "total_gz": 12443,
+  "total": 26402,
+  "total_gz": 12432,
   "sent": [
     "a (memory)",
     "b (exit)",
diff --git a/test/codesize/test_codesize_minimal_wasmfs.json b/test/codesize/test_codesize_minimal_wasmfs.json
index 08e058c9cd5ad..5fe4c0860fef6 100644
--- a/test/codesize/test_codesize_minimal_wasmfs.json
+++ b/test/codesize/test_codesize_minimal_wasmfs.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2210,
-  "a.out.js.gz": 1089,
+  "a.out.js": 1998,
+  "a.out.js.gz": 1027,
   "a.out.nodebug.wasm": 75,
   "a.out.nodebug.wasm.gz": 87,
-  "total": 2285,
-  "total_gz": 1176,
+  "total": 2073,
+  "total_gz": 1114,
   "sent": [],
   "imports": [],
   "exports": [
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_embind.json b/test/codesize/test_minimal_runtime_code_size_hello_embind.json
index d3f128deb07a6..7b9fa7b1daef4 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_embind.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_embind.json
@@ -2,9 +2,9 @@
   "a.html": 548,
   "a.html.gz": 371,
   "a.js": 7249,
-  "a.js.gz": 3325,
+  "a.js.gz": 3322,
   "a.wasm": 7099,
   "a.wasm.gz": 3246,
   "total": 14896,
-  "total_gz": 6942
+  "total_gz": 6939
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_embind_val.json b/test/codesize/test_minimal_runtime_code_size_hello_embind_val.json
index f729802cdd1eb..9a1222bb13beb 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_embind_val.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_embind_val.json
@@ -2,9 +2,9 @@
   "a.html": 548,
   "a.html.gz": 371,
   "a.js": 5346,
-  "a.js.gz": 2515,
+  "a.js.gz": 2516,
   "a.wasm": 5741,
   "a.wasm.gz": 2690,
   "total": 11635,
-  "total_gz": 5576
+  "total_gz": 5577
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_wasm_worker.json b/test/codesize/test_minimal_runtime_code_size_hello_wasm_worker.json
index b9e76134b7f12..9faf5f4e0f058 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_wasm_worker.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_wasm_worker.json
@@ -1,10 +1,10 @@
 {
   "a.html": 515,
   "a.html.gz": 355,
-  "a.js": 945,
-  "a.js.gz": 593,
+  "a.js": 923,
+  "a.js.gz": 582,
   "a.wasm": 2661,
   "a.wasm.gz": 1479,
-  "total": 4121,
-  "total_gz": 2427
+  "total": 4099,
+  "total_gz": 2416
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm2js.json b/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm2js.json
index 39c2e3644a679..9e0775c7bbb04 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm2js.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm2js.json
@@ -2,7 +2,7 @@
   "a.html": 342,
   "a.html.gz": 252,
   "a.js": 18217,
-  "a.js.gz": 9828,
+  "a.js.gz": 9827,
   "total": 18559,
-  "total_gz": 10080
+  "total_gz": 10079
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm_singlefile.json b/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm_singlefile.json
index b8bee5125d38e..1a8c46bd18e82 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm_singlefile.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_webgl2_wasm_singlefile.json
@@ -1,4 +1,4 @@
 {
   "a.html": 15040,
-  "a.html.gz": 9004
+  "a.html.gz": 9027
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_webgl_wasm.json b/test/codesize/test_minimal_runtime_code_size_hello_webgl_wasm.json
index ecb88a72d5678..318bc1fae19d2 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_webgl_wasm.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_webgl_wasm.json
@@ -2,9 +2,9 @@
   "a.html": 450,
   "a.html.gz": 318,
   "a.js": 3961,
-  "a.js.gz": 2109,
+  "a.js.gz": 2108,
   "a.wasm": 8313,
   "a.wasm.gz": 5646,
   "total": 12724,
-  "total_gz": 8073
+  "total_gz": 8072
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_hello_world_wasm.json b/test/codesize/test_minimal_runtime_code_size_hello_world_wasm.json
index 99c0d29ff9a53..d8132a0cf3154 100644
--- a/test/codesize/test_minimal_runtime_code_size_hello_world_wasm.json
+++ b/test/codesize/test_minimal_runtime_code_size_hello_world_wasm.json
@@ -2,9 +2,9 @@
   "a.html": 548,
   "a.html.gz": 371,
   "a.js": 284,
-  "a.js.gz": 240,
+  "a.js.gz": 239,
   "a.wasm": 95,
   "a.wasm.gz": 101,
   "total": 927,
-  "total_gz": 712
+  "total_gz": 711
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_random_printf_wasm.json b/test/codesize/test_minimal_runtime_code_size_random_printf_wasm.json
index 206b2029eedff..98f3f3999840a 100644
--- a/test/codesize/test_minimal_runtime_code_size_random_printf_wasm.json
+++ b/test/codesize/test_minimal_runtime_code_size_random_printf_wasm.json
@@ -1,4 +1,4 @@
 {
   "a.html": 11054,
-  "a.html.gz": 5754
+  "a.html.gz": 5752
 }
diff --git a/test/codesize/test_minimal_runtime_code_size_random_printf_wasm2js.json b/test/codesize/test_minimal_runtime_code_size_random_printf_wasm2js.json
index 5dc96cb01d779..269bfba988fe7 100644
--- a/test/codesize/test_minimal_runtime_code_size_random_printf_wasm2js.json
+++ b/test/codesize/test_minimal_runtime_code_size_random_printf_wasm2js.json
@@ -1,4 +1,4 @@
 {
   "a.html": 17417,
-  "a.html.gz": 7658
+  "a.html.gz": 7659
 }
diff --git a/test/codesize/test_small_js_flags.expected.js b/test/codesize/test_small_js_flags.expected.js
index 270f694ffdc4c..fa215b7d49a5b 100644
--- a/test/codesize/test_small_js_flags.expected.js
+++ b/test/codesize/test_small_js_flags.expected.js
@@ -107,16 +107,8 @@ var runtimeInitialized = false;
 
 function updateMemoryViews() {
   var b = wasmMemory.buffer;
-  HEAP8 = new Int8Array(b);
-  HEAP16 = new Int16Array(b);
   HEAPU8 = new Uint8Array(b);
-  HEAPU16 = new Uint16Array(b);
-  HEAP32 = new Int32Array(b);
   HEAPU32 = new Uint32Array(b);
-  HEAPF32 = new Float32Array(b);
-  HEAPF64 = new Float64Array(b);
-  HEAP64 = new BigInt64Array(b);
-  HEAPU64 = new BigUint64Array(b);
 }
 
 // include: memoryprofiler.js
@@ -262,26 +254,6 @@ class ExitStatus {
   }
 }
 
-/** @type {!Int16Array} */ var HEAP16;
-
-/** @type {!Int32Array} */ var HEAP32;
-
-/** not-@type {!BigInt64Array} */ var HEAP64;
-
-/** @type {!Int8Array} */ var HEAP8;
-
-/** @type {!Float32Array} */ var HEAPF32;
-
-/** @type {!Float64Array} */ var HEAPF64;
-
-/** @type {!Uint16Array} */ var HEAPU16;
-
-/** @type {!Uint32Array} */ var HEAPU32;
-
-/** not-@type {!BigUint64Array} */ var HEAPU64;
-
-/** @type {!Uint8Array} */ var HEAPU8;
-
 var printCharBuffers = [ null, [], [] ];
 
 var UTF8Decoder = globalThis.TextDecoder && new TextDecoder;
@@ -360,6 +332,10 @@ var printChar = (stream, curr) => {
   }
 };
 
+/** @type {!Uint8Array} */ var HEAPU8;
+
+/** @type {!Uint32Array} */ var HEAPU32;
+
 var _fd_write = (fd, iov, iovcnt, pnum) => {
   // hack to support printf in SYSCALLS_REQUIRE_FILESYSTEM=0
   var num = 0;
diff --git a/test/codesize/test_small_js_flags.json b/test/codesize/test_small_js_flags.json
index 7ca0c00f0cfbd..fca4a53fc1243 100644
--- a/test/codesize/test_small_js_flags.json
+++ b/test/codesize/test_small_js_flags.json
@@ -1,10 +1,10 @@
 {
-  "a.out.js": 2222,
-  "a.out.js.gz": 1230,
+  "a.out.js": 2066,
+  "a.out.js.gz": 1187,
   "a.out.nodebug.wasm": 1666,
   "a.out.nodebug.wasm.gz": 945,
-  "total": 3888,
-  "total_gz": 2175,
+  "total": 3732,
+  "total_gz": 2132,
   "sent": [
     "a (fd_write)"
   ],
diff --git a/test/codesize/test_unoptimized_code_size.json b/test/codesize/test_unoptimized_code_size.json
index 5e254e55d89b8..38c3216fcc42a 100644
--- a/test/codesize/test_unoptimized_code_size.json
+++ b/test/codesize/test_unoptimized_code_size.json
@@ -1,16 +1,16 @@
 {
-  "hello_world.js": 56153,
-  "hello_world.js.gz": 17678,
+  "hello_world.js": 54379,
+  "hello_world.js.gz": 17284,
   "hello_world.wasm": 15115,
   "hello_world.wasm.gz": 7464,
-  "no_asserts.js": 25585,
-  "no_asserts.js.gz": 8688,
+  "no_asserts.js": 23708,
+  "no_asserts.js.gz": 8297,
   "no_asserts.wasm": 12229,
   "no_asserts.wasm.gz": 6004,
-  "strict.js": 53255,
-  "strict.js.gz": 16649,
+  "strict.js": 51481,
+  "strict.js.gz": 16276,
   "strict.wasm": 15115,
   "strict.wasm.gz": 7461,
-  "total": 177452,
-  "total_gz": 63944
+  "total": 172027,
+  "total_gz": 62786
 }
diff --git a/tools/emscripten.py b/tools/emscripten.py
index fd3f53f93db33..4785aa1e86dc7 100644
--- a/tools/emscripten.py
+++ b/tools/emscripten.py
@@ -30,6 +30,7 @@
   extract_metadata,
   filelock,
   js_manipulation,
+  link,
   shared,
   utils,
   webassembly,
@@ -155,6 +156,8 @@ def update_settings_glue(wasm_file, metadata, base_metadata):
   for deps in metadata.js_deps:
     settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE.extend(deps.split(','))
 
+  link.add_required_heap_symbols()
+
 
 def apply_static_code_hooks(forwarded_json, code):
   def inject_code_hooks(name):
@@ -390,6 +393,7 @@ def emscript(in_wasm, out_wasm, outfile_js, js_syms, finalize=True, base_metadat
 
   asm_consts = create_asm_consts(metadata)
   em_js_funcs = create_em_js(metadata)
+  settings.EM_JS_SNIPPETS = em_js_funcs + [f[1] for f in asm_consts]
 
   if settings.SIDE_MODULE:
     # When building side modules, validate the EM_ASM and EM_JS string by running
diff --git a/tools/link.py b/tools/link.py
index db52cd9ced9ba..4daf89a08b19b 100644
--- a/tools/link.py
+++ b/tools/link.py
@@ -806,6 +806,49 @@ def setup_cross_origin_storage():
       exit_with_error(f"CROSS_ORIGIN_STORAGE_ORIGINS: {o!r} is not a valid HTTPS origin (expected 'https://host' or 'https://host:port')")
 
 
+def add_required_heap_symbols():
+  """Auto-include heap views and helper symbols required by certain build modes or runtime.
+
+  Because addImplicitDeps only scans library functions and user code (pre-js/post-js/EM_JS),
+  runtime scaffolding files (e.g., postamble.js, runtime_stack_check.js, memoryprofiler.js)
+  that access linear memory directly must have their heap views explicitly declared here
+  so they are emitted in the final JS bundle.
+  """
+  heaps = []
+  if settings.MAIN_MODULE or settings.EXPORT_ALL or settings.SAFE_HEAP:
+    # Dynamic linking side modules, full symbol exports, or safe heap instrumentation
+    # require all standard heap views and value helpers to be available.
+    heaps += ['$getValue', '$setValue']
+    heaps += ['$HEAP8', '$HEAPU8', '$HEAP16', '$HEAPU16',
+              '$HEAP32', '$HEAPU32', '$HEAPF32', '$HEAPF64']
+    if settings.WASM_BIGINT or settings.MEMORY64:
+      heaps += ['$HEAP64', '$HEAPU64']
+  else:
+    # STACK_OVERFLOW_CHECK accesses HEAP32/HEAPU32 in runtime_stack_check.js.
+    # MAIN_READS_PARAMS populates argv pointers in linear memory in postamble.js (callMain).
+    if settings.STACK_OVERFLOW_CHECK or (settings.HAS_MAIN and settings.MAIN_READS_PARAMS):
+      heaps += ['$HEAP32', '$HEAPU32']
+      if (settings.HAS_MAIN and settings.MAIN_READS_PARAMS) and (settings.WASM_BIGINT or settings.MEMORY64):
+        heaps += ['$HEAP64', '$HEAPU64']
+    # MEMORYPROFILER accesses HEAP8 in memoryprofiler.js.
+    if settings.MEMORYPROFILER:
+      heaps.append('$HEAP8')
+    # AUDIO_WORKLET accesses HEAP32, HEAPU32, and HEAPF32 in audio_worklet.js.
+    if settings.AUDIO_WORKLET:
+      heaps += ['$HEAP32', '$HEAPU32', '$HEAPF32']
+      if settings.WASM_BIGINT or settings.MEMORY64:
+        heaps += ['$HEAP64', '$HEAPU64']
+    # runtime_common.js accesses HEAP8 under ALLOW_MEMORY_GROWTH (to check buffer resizability),
+    # RUNTIME_DEBUG (to log initial setup), and ASSERTIONS (to guard against re-entrancy when
+    # ALLOW_MEMORY_GROWTH is 0).
+    if settings.ALLOW_MEMORY_GROWTH or settings.RUNTIME_DEBUG or settings.ASSERTIONS:
+      heaps.append('$HEAP8')
+
+  for h in heaps:
+    if h not in settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE:
+      settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE.append(h)
+
+
 @ToolchainProfiler.profile_block('linker_setup')
 def phase_linker_setup(options, linker_args):  # noqa: C901, PLR0912, PLR0915
   """Future modifications should consider refactoring to reduce complexity.
@@ -1194,11 +1237,7 @@ def limit_incoming_module_api():
     if prop not in settings.ALL_INCOMING_MODULE_JS_API:
       diagnostics.warning('unused-command-line-argument', f'invalid entry in INCOMING_MODULE_JS_API: {prop}')
 
-  settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += [
-    '$wasmMemory',
-    '$HEAP8', '$HEAPU8', '$HEAP16', '$HEAPU16',
-    '$HEAP32', '$HEAPU32', '$HEAPF32', '$HEAPF64',
-  ]
+  settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$wasmMemory']
 
   if 'noExitRuntime' in settings.INCOMING_MODULE_JS_API:
     settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE.append('$noExitRuntime')
@@ -1273,8 +1312,6 @@ def limit_incoming_module_api():
         # "checkUnflushedContent()" and "missingLibrarySymbol()" depend on warnOnce
         settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$warnOnce']
 
-      settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$getValue', '$setValue']
-
     settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$ExitStatus']
 
     if settings.LOAD_SOURCE_MAP:
@@ -1573,9 +1610,6 @@ def limit_incoming_module_api():
 
   feature_matrix.auto_enable_features()
 
-  if settings.WASM_BIGINT:
-    settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE += ['$HEAP64', '$HEAPU64']
-
   if settings.AUDIO_WORKLET:
     add_system_js_lib('libwebaudio.js')
     settings.DEFAULT_LIBRARY_FUNCS_TO_INCLUDE.append('$getWasmTableEntry')
@@ -1857,6 +1891,7 @@ def get_full_import_name(name):
   if settings.USE_CLOSURE_COMPILER or not settings.MINIFY_WHITESPACE:
     settings.MAYBE_CLOSURE_COMPILER = 1
 
+  add_required_heap_symbols()
   check_settings()
 
   return target, wasm_target