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Bug 1969895 - Do not try encoding JSON modules. a=RyanVM

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Original Revision: https://phabricator.services.mozilla.com/D252181

Differential Revision: https://phabricator.services.mozilla.com/D252260
This commit is contained in:
Tooru Fujisawa
2025-06-03 03:12:51 +00:00
committed by rvandermeulen@mozilla.com
parent bc8ea6d91e
commit 59706292b9
6 changed files with 95 additions and 0 deletions
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6
dom/script/ScriptLoader.cpp
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@@ -2643,6 +2643,12 @@ void ScriptLoader::CalculateBytecodeCacheFlag(ScriptLoadRequest* aRequest) {
return;
}
if (aRequest->IsModuleRequest() &&
aRequest->AsModuleRequest()->mModuleType != JS::ModuleType::JavaScript) {
aRequest->MarkSkippedBytecodeEncoding();
return;
}
// We need the nsICacheInfoChannel to exist to be able to open the alternate
// data output stream. This pointer would only be non-null if the bytecode was
// activated at the time the channel got created in StartLoad.

6
dom/tests/browser/browser.toml
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@@ -60,6 +60,12 @@ support-files = [
"page_bytecode_cache_asm_js.js",
]
["browser_bytecode_json_module.js"]
support-files = [
"page_bytecode_cache_json_module.html",
"page_bytecode_cache_json_module.json",
]
["browser_cancel_keydown_keypress_event.js"]
support-files = ["prevent_return_key.html"]

36
dom/tests/browser/browser_bytecode_json_module.js Normal file
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@@ -0,0 +1,36 @@
"use strict";
const PAGE_URL =
"https://example.com/browser/dom/tests/browser/page_bytecode_cache_json_module.html";
async function waitForIdle() {
for (let i = 0; i < 10; i++) {
await new Promise(resolve => Services.tm.idleDispatchToMainThread(resolve));
}
}
add_task(async function () {
// Eagerly generate bytecode cache.
await SpecialPowers.pushPrefEnv({
set: [
["dom.script_loader.bytecode_cache.enabled", true],
["dom.script_loader.bytecode_cache.strategy", -1],
],
});
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: PAGE_URL,
waitForLoad: true,
},
async () => {
// TODO: Once the bytecode-encoding events are refactored,
// listen to the events (bug 1902951).
await waitForIdle();
ok(true, "No crash should happen");
}
);
await SpecialPowers.popPrefEnv();
});

11
dom/tests/browser/page_bytecode_cache_json_module.html Normal file
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@@ -0,0 +1,11 @@
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>JSON module test</title>
</head>
<body>
<h1>JSON module test</h1>
<script>
import("./page_bytecode_cache_json_module.json", { with: { type: "json"} });
</script>
</body>

35
dom/tests/browser/page_bytecode_cache_json_module.json Normal file
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@@ -0,0 +1,35 @@
{
"dummy": [
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache",
"dummy text to exceed the minimal source length for bytecode cache"
]
}

1
eslint-ignores.config.mjs
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@@ -310,4 +310,5 @@ export default [
// Support for Import attributes is only available in ESLint v9.19
// https://bugzilla.mozilla.org/show_bug.cgi?id=1944290
"netwerk/test/mochitests/test_import_json_module.mjs",
"dom/tests/browser/page_bytecode_cache_json_module.html",
];