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Perf: use Bun.peek() to save a few ticks

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SukkaW
2024-01-28 22:29:14 +08:00
parent c95e96fc61
commit e626a6b5d2
13 changed files with 108 additions and 47 deletions
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33
Build/build-microsoft-cdn.ts
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@@ -24,24 +24,21 @@ const BLACKLIST = [
];
export const getMicrosoftCdnRulesetPromise = createMemoizedPromise(async () => {
const set = await traceAsync('fetch accelerated-domains.china.conf', async () => {
// First trie is to find the microsoft domains that matches probe domains
const trie = createTrie();
for await (const line of await fetchRemoteTextByLine('https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/accelerated-domains.china.conf')) {
if (line.startsWith('server=/') && line.endsWith('/114.114.114.114')) {
const domain = line.slice(8, -16);
trie.add(domain);
}
// First trie is to find the microsoft domains that matches probe domains
const trie = createTrie();
for await (const line of await fetchRemoteTextByLine('https://raw.githubusercontent.com/felixonmars/dnsmasq-china-list/master/accelerated-domains.china.conf')) {
if (line.startsWith('server=/') && line.endsWith('/114.114.114.114')) {
const domain = line.slice(8, -16);
trie.add(domain);
}
return new Set(PROBE_DOMAINS.flatMap(domain => trie.find(domain)));
});
}
const set = new Set(PROBE_DOMAINS.flatMap(domain => trie.find(domain)));
// Second trie is to remove blacklisted domains
const trie2 = createTrie(set);
const black = BLACKLIST.flatMap(domain => trie2.find(domain, true));
for (let i = 0, len = black.length; i < len; i++) {
set.delete(black[i]);
}
BLACKLIST.forEach(black => {
trie2.substractSetInPlaceFromFound(black, set);
});
return Array.from(set).map(d => `DOMAIN-SUFFIX,${d}`).concat(WHITELIST);
});
@@ -56,12 +53,18 @@ export const buildMicrosoftCdn = task(import.meta.path, async (span) => {
' - https://github.com/felixonmars/dnsmasq-china-list'
];
const promise = getMicrosoftCdnRulesetPromise();
const peeked = Bun.peek(promise);
const res: string[] = peeked === promise
? await span.traceChild('get microsoft cdn domains').tracePromise(promise)
: (peeked as string[]);
return createRuleset(
span,
'Sukka\'s Ruleset - Microsoft CDN',
description,
new Date(),
await getMicrosoftCdnRulesetPromise(),
res,
'ruleset',
path.resolve(import.meta.dir, '../List/non_ip/microsoft_cdn.conf'),
path.resolve(import.meta.dir, '../Clash/non_ip/microsoft_cdn.txt')