Fix for --preload-file + -sSTRICT (#22800)

Fixes: #20361

Author: sbc100

test/test_other.py

@@ -1928,7 +1928,7 @@ def test_export_from_archive(self):
   @parameterized({
     'embed': (['--embed-file', 'somefile.txt'],),
     'embed_twice': (['--embed-file', 'somefile.txt', '--embed-file', 'somefile.txt'],),
-    'preload': (['--preload-file', 'somefile.txt'],),
+    'preload': (['--preload-file', 'somefile.txt', '-sSTRICT'],),
     'preload_closure': (['--preload-file', 'somefile.txt', '-O2', '--closure=1'],),
     'preload_and_embed': (['--preload-file', 'somefile.txt', '--embed-file', 'hello.txt'],)
   })

tools/link.py

@@ -1206,6 +1206,10 @@ def phase_linker_setup(options, state, newargs):
     # if we include any files, or intend to use preload plugins, then we definitely need filesystem support
     settings.FORCE_FILESYSTEM = 1
 
+  if options.preload_files:
+    # File preloading uses `Module['preRun']`.
+    settings.INCOMING_MODULE_JS_API.append('preRun')
+
   if settings.FORCE_FILESYSTEM and not settings.FILESYSTEM:
     exit_with_error('`-sFORCE_FILESYSTEM` cannot be used with `-sFILESYSTEM=0`')