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Reduce synchronous policy retrieval impact on file: and ftp: document loading performance.

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hackademix 2023-12-03 23:11:25 +01:00
parent da5a90bcb9
commit b56ffaccc8
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GPG Key ID: 231A83AFDA9C2434
2 changed files with 4 additions and 137 deletions
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9
src/content/syncFetchPolicy.js
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@ -66,15 +66,14 @@
return;
}
debug("Initial readyState and body", document.readyState, document.body);
debug("Initial document state", document.readyState, document.documentElement, document.head, document.body); // DEV_ONLY
let mustFreeze = UA.isMozilla
let mustFreeze = document.head && UA.isMozilla
&& (!/^(?:image|video|audio)/.test(document.contentType) || document instanceof XMLDocument)
&& document.readyState !== "complete";
if (mustFreeze) {
// Mozilla has already parsed the <head> element, we must take extra steps...
try {
DocumentFreezer.freeze();
@ -85,7 +84,7 @@
debug("Readystate: %s, suppressedScripts = %s, canScript = %s", readyState, DocumentFreezer.suppressedScripts, ns.canScript);
if (!ns.canScript) {
setTimeout(() => DocumentFreezer.unfreeze(), 0);
queueMicrotask(() => DocumentFreezer.unfreeze());
let normalizeDir = e => {
// Chromium does this automatically. We need it to understand we're a directory earlier and allow browser UI scripts.
if (document.baseURI === document.URL + "/") {
@ -156,7 +155,7 @@
DocumentFreezer.unfreeze();
let scripts = [], deferred = [];
// push deferred scripts, if any, to the end
for (let s of [...document.querySelectorAll("script")]) {
for (let s of document.getElementsByTagName("script")) {
(s.defer && !s.text ? deferred : scripts).push(s);
s.addEventListener("beforescriptexecute", e => {
console.debug("Suppressing", script);

132
src/lib/DocumentFreezer.js
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