Remove --proxy-to-worker/-sPROXY_TO_WORKER

Fixes: #25440

Author: sbc100

site/source/docs/api_reference/module.rst

@@ -174,10 +174,6 @@ Other methods
 
   .. note:: Sanitizers or source map is currently not supported if overriding WebAssembly instantiation with Module.instantiateWasm. Providing Module.instantiateWasm when source map or sanitizer is enabled can prevent WebAssembly instantiation from finishing.
 
-.. js:function:: Module.onCustomMessage
-
-  When compiled with ``PROXY_TO_WORKER = 1`` (see `settings.js <https://github.com/emscripten-core/emscripten/blob/main/src/settings.js>`_), this callback (which should be implemented on both the client and worker's ``Module`` object) allows sending custom messages and data between the web worker and the main thread (using the ``postCustomMessage`` function defined in `proxyClient.js <https://github.com/emscripten-core/emscripten/blob/main/src/proxyClient.js>`_ and `proxyWorker.js <https://github.com/emscripten-core/emscripten/blob/main/src/proxyWorker.js>`_).
-
 .. js:function:: Module.fetchSettings
 
   Override the default settings object used when fetching the Wasm module from

site/source/docs/api_reference/wasm_workers.rst

@@ -396,7 +396,6 @@ The following build options are not supported at the moment with Wasm Workers:
 
 - -sSINGLE_FILE
 - Dynamic linking (-sLINKABLE, -sMAIN_MODULE, -sSIDE_MODULE)
-- -sPROXY_TO_WORKER
 - -sPROXY_TO_PTHREAD
 
 Example Code

site/source/docs/tools_reference/settings_reference.rst

@@ -1679,27 +1679,6 @@ in a worker. See emscripten.h
 
 Default value: false
 
-.. _proxy_to_worker:
-
-PROXY_TO_WORKER
-===============
-
-If set to 1, we build the project into a js file that will run in a worker,
-and generate an html file that proxies input and output to/from it.
-
-Default value: false
-
-.. _proxy_to_worker_filename:
-
-PROXY_TO_WORKER_FILENAME
-========================
-
-If set, the script file name the main thread loads.  Useful if your project
-doesn't run the main emscripten- generated script immediately but does some
-setup before
-
-Default value: ''
-
 .. _proxy_to_pthread:
 
 PROXY_TO_PTHREAD
@@ -3384,8 +3363,6 @@ the these settings please open a bug (or reply to one of the existing bugs).
  - ``ASYNCIFY_EXPORTS``: please use JSPI_EXPORTS instead
  - ``LINKABLE``: under consideration for removal (https://github.com/emscripten-core/emscripten/issues/25262)
  - ``RELOCATABLE``:  under consideration for removal (https://github.com/emscripten-core/emscripten/issues/25262)
- - ``PROXY_TO_WORKER``: under consideration for removal (See https://github.com/emscripten-core/emscripten/issues/25440)
- - ``PROXY_TO_WORKER_FILENAME``: under consideration for removal (See https://github.com/emscripten-core/emscripten/issues/25440)
 
 .. _legacy-settings:
 
@@ -3471,3 +3448,4 @@ for backwards compatbility with older versions:
  - ``USE_OFFSET_COVERTER``: No longer supported, not needed with modern v8 versions (Valid values: [0])
  - ``ASYNCIFY_LAZY_LOAD_CODE``: No longer supported (Valid values: [0])
  - ``USE_WEBGPU``: No longer supported; replaced by --use-port=emdawnwebgpu, which implements a newer (but incompatible) version of webgpu.h - see tools/ports/emdawnwebgpu.py (Valid values: [0])
+ - ``PROXY_TO_WORKER``: No longer supported (Valid values: [0])

src/lib/libegl.js

@@ -637,10 +637,6 @@ var LibraryEGL = {
   eglSwapBuffers__deps: ['$GLctx'],
   eglSwapBuffers__proxy: 'sync',
   eglSwapBuffers: (dpy, surface) => {
-#if PROXY_TO_WORKER
-    if (Browser.doSwapBuffers) Browser.doSwapBuffers();
-#endif
-
     if (!EGL.defaultDisplayInitialized) {
       EGL.setErrorCode(0x3001 /* EGL_NOT_INITIALIZED */);
     } else if (!GLctx) {

src/lib/libwasm_worker.js

@@ -18,9 +18,6 @@
 #if RELOCATABLE
 #error "dynamic linking is not supported with -sWASM_WORKERS"
 #endif
-#if PROXY_TO_WORKER
-#error "-sPROXY_TO_WORKER is not supported with -sWASM_WORKERS"
-#endif
 #if WASM2JS && MODULARIZE
 #error "-sWASM=0 + -sMODULARIZE + -sWASM_WORKERS is not supported"
 #endif

src/postamble.js

@@ -6,13 +6,6 @@
 
 // === Auto-generated postamble setup entry stuff ===
 
-#if PROXY_TO_WORKER
-if (ENVIRONMENT_IS_WORKER) {
-#include "webGLWorker.js"
-#include "proxyWorker.js"
-}
-#endif
-
 #if LOAD_SOURCE_MAP
 #include "source_map_support.js"
 #endif