Perf: optimiaztions, avoid spread operator

Build/build-apple-cdn.ts

@@ -18,8 +18,7 @@ export const getAppleCdnDomainsPromise = createMemoizedPromise(() => fsFetchCach
 ));
 
 export const buildAppleCdn = task(import.meta.main, import.meta.path)(async (span) => {
-  const promise = getAppleCdnDomainsPromise();
+  const res: string[] = await span.traceChildPromise('get apple cdn domains', getAppleCdnDomainsPromise());
-  const res: string[] = await span.traceChildPromise('get apple cdn domains', promise);
 
   const description = [
     ...SHARED_DESCRIPTION,

Build/build-cloudmounter-rules.ts

@@ -11,9 +11,7 @@ export const buildCloudMounterRules = task(import.meta.main, import.meta.path)(a
   // AND,((SRC-IP,192.168.1.110), (DOMAIN, example.com))
 
   const results = DOMAINS.flatMap(domain => {
-    return PROCESS_NAMES.map(process => {
+    return PROCESS_NAMES.map(process => `AND,((${domain}),(PROCESS-NAME,${process}))`);
-      return `AND,((${domain}),(PROCESS-NAME,${process}))`;
-    });
   });
 
   const description = SHARED_DESCRIPTION;

Build/build-domestic-direct-lan-ruleset-dns-mapping-module.ts

@@ -85,12 +85,8 @@ export const buildDomesticRuleset = task(import.meta.main, import.meta.path)(asy
         `#!desc=Last Updated: ${new Date().toISOString()}`,
         '',
         '[Host]',
-        ...dataset.flatMap(([, { domains, dns, ...rest }]) => [
+        ...dataset.flatMap(([, { domains, dns, hosts }]) => [
-          ...(
+          ...Object.entries(hosts).flatMap(([dns, ips]: [dns: string, ips: string[]]) => `${dns} = ${ips.join(', ')}`),
-            'hosts' in rest
-              ? Object.entries(rest.hosts).flatMap(([dns, ips]: [dns: string, ips: string[]]) => `${dns} = ${ips.join(', ')}`)
-              : []
-          ),
           ...domains.flatMap((domain) => [
             `${domain} = server:${dns}`,
             `*.${domain} = server:${dns}`

Build/build-sgmodule-redirect.ts

@@ -2,6 +2,7 @@ import path from 'path';
 import { task } from './trace';
 import { compareAndWriteFile } from './lib/create-file';
 import { getHostname } from 'tldts';
+import { isTruthy } from './lib/misc';
 
 function escapeRegExp(string = '') {
   const reRegExpChar = /[$()*+.?[\\\]^{|}]/g;
@@ -122,7 +123,7 @@ export const buildRedirectModule = task(import.meta.main, import.meta.path)(asyn
   const domains = Array.from(new Set([
     ...REDIRECT_MIRROR.map(([from]) => getHostname(from, { detectIp: false })),
     ...REDIRECT_FAKEWEBSITES.flatMap(([from]) => [from, `www.${from}`])
-  ])).filter(Boolean);
+  ])).filter(isTruthy);
 
   return compareAndWriteFile(
     span,

Build/build-sspanel-appprofile.ts

@@ -10,6 +10,8 @@ import { getChnCidrPromise } from './build-chn-cidr';
 import { getTelegramCIDRPromise } from './build-telegram-cidr';
 import { compareAndWriteFile } from './lib/create-file';
 import { getMicrosoftCdnRulesetPromise } from './build-microsoft-cdn';
+import { isTruthy } from './lib/misc';
+import { appendArrayInPlace } from './lib/append-array-in-place';
 
 const POLICY_GROUPS: Array<[name: string, insertProxy: boolean, insertDirect: boolean]> = [
   ['Default Proxy', true, false],
@@ -120,8 +122,6 @@ export const buildSSPanelUIMAppProfile = task(import.meta.main, import.meta.path
   );
 });
 
-const isTruthy = <T>(i: T | 0 | '' | false | null | undefined): i is T => !!i;
-
 function generateAppProfile(
   directDomains: string[],
   microsoftAppleDomains: string[],
@@ -135,7 +135,7 @@ function generateAppProfile(
   globalCidrs: string[],
   lanCidrs: string[]
 ) {
-  return [
+  const redults = [
     '<?php',
     '',
     `// # Build ${new Date().toISOString()}`,
@@ -172,8 +172,12 @@ function generateAppProfile(
       return acc;
     }, [])).slice(1, -1)}];`,
     '$_ENV[\'Clash_Group_Config\'] = [',
-    '    \'proxy-groups\' => [',
+    '    \'proxy-groups\' => ['
-    ...POLICY_GROUPS.flatMap(([name, insertProxy, insertDirect]) => {
+  ];
+
+  appendArrayInPlace(
+    redults,
+    POLICY_GROUPS.flatMap(([name, insertProxy, insertDirect]) => {
       return [
         '        [',
         `            'name' => '${name}',`,
@@ -184,33 +188,79 @@ function generateAppProfile(
         '            ],',
         '        ],'
       ].filter(isTruthy);
-    }),
+    })
+  );
+
+  appendArrayInPlace(
+    redults,
+    [
       '    ],',
-    '    \'rules\' => [',
+      '    \'rules\' => ['
+    ]
+  );
+
   // domestic - domains
-    ...directDomains.map(line => `        '${line},Domestic',`),
+  appendArrayInPlace(
+    redults,
+    directDomains.map(line => `        '${line},Domestic',`)
+  );
+
   // microsoft & apple - domains
-    ...microsoftAppleDomains.map(line => `        '${line},Microsoft & Apple',`),
+  appendArrayInPlace(
+    redults,
+    microsoftAppleDomains.map(line => `        '${line},Microsoft & Apple',`)
+  );
+
   // stream - domains
-    ...streamDomains.map(line => `        '${line},Stream',`),
+  appendArrayInPlace(
+    redults,
+    streamDomains.map(line => `        '${line},Stream',`)
+  );
   // steam download - domains
-    ...steamDomains.map(line => `        '${line},Steam Download',`),
+  appendArrayInPlace(
+    redults,
+    steamDomains.map(line => `        '${line},Steam Download',`)
+  );
   // global - domains
-    ...globalDomains.map(line => `        '${line},Global',`),
+  appendArrayInPlace(
+    redults,
+    globalDomains.map(line => `        '${line},Global',`)
+  );
   // microsoft & apple - ip cidr (nope)
   // lan - domains
-    ...lanDomains.map(line => `        '${line},DIRECT',`),
+  appendArrayInPlace(
+    redults,
+    lanDomains.map(line => `        '${line},DIRECT',`)
+  );
   // stream - ip cidr
-    ...streamCidrs.map(line => `        '${line},Stream',`),
+  appendArrayInPlace(
+    redults,
+    streamCidrs.map(line => `        '${line},Stream',`)
+  );
   // global - ip cidr
-    ...globalCidrs.map(line => `        '${line},Global',`),
+  appendArrayInPlace(
+    redults,
+    globalCidrs.map(line => `        '${line},Global',`)
+  );
   // domestic - ip cidr
-    ...directCidrs.map(line => `        '${line},Domestic',`),
+  appendArrayInPlace(
+    redults,
+    directCidrs.map(line => `        '${line},Domestic',`)
+  );
   // lan - ip cidr
-    ...lanCidrs.map(line => `        '${line},DIRECT',`),
+  appendArrayInPlace(
+    redults,
+    lanCidrs.map(line => `        '${line},DIRECT',`)
+  );
   // match
+  appendArrayInPlace(
+    redults,
+    [
       '        \'MATCH,Final Match\',',
       '    ],',
       '];'
-  ];
+    ]
+  );
+
+  return redults;
 }

Build/lib/misc.ts

@@ -0,0 +1 @@
+export const isTruthy = <T>(i: T | 0 | '' | false | null | undefined): i is T => !!i;

Build/trace/index.ts

@@ -72,26 +72,20 @@ export const createSpan = (name: string, parentTraceResult?: TraceResult): Span
     stop,
     traceChild,
     traceSyncFn<T>(fn: (span: Span) => T) {
-      try {
+      const res = fn(span);
-        return fn(span);
-      } finally {
       span.stop();
-      }
+      return res;
     },
     async traceAsyncFn<T>(fn: (span: Span) => T | Promise<T>): Promise<T> {
-      try {
+      const res = await fn(span);
-        return await fn(span);
-      } finally {
       span.stop();
-      }
+      return res;
     },
     traceResult: curTraceResult,
     async tracePromise<T>(promise: Promise<T>): Promise<T> {
-      try {
+      const res = await promise;
-        return await promise;
-      } finally {
       span.stop();
-      }
+      return res;
     },
     traceChildSync: <T>(name: string, fn: (span: Span) => T): T => traceChild(name).traceSyncFn(fn),
     traceChildAsync: <T>(name: string, fn: (span: Span) => T | Promise<T>): Promise<T> => traceChild(name).traceAsyncFn(fn),

Source/non_ip/direct.ts

@@ -1,5 +1,5 @@
 export interface DNSMapping {
-  hosts?: {
+  hosts: {
     [domain: string]: string[]
   },
   dns: string,
@@ -9,6 +9,7 @@ export interface DNSMapping {
 export const DIRECTS = {
   ROUTER: {
     dns: 'system',
+    hosts: {},
     domains: [
       // Aruba Router
       'instant.arubanetworks.com',
@@ -77,6 +78,7 @@ export const DIRECTS = {
   },
   SYSTEM: {
     dns: 'system',
+    hosts: {},
     domains: [
       '_hotspot_.m2m',
       'hotspot.cslwifi.com',
@@ -92,6 +94,7 @@ export const DIRECTS = {
 export const LANS = {
   LAN: {
     dns: 'system',
+    hosts: {},
     domains: [
       'lan',
       'localhost',

Source/non_ip/domestic.ts

@@ -141,18 +141,21 @@ export const DOMESTICS = {
   },
   BILIBILI_ALI: {
     dns: 'quic://dns.alidns.com:853',
+    hosts: {},
     domains: [
       'upos-sz-mirrorali.bilivideo.com'
     ]
   },
   BILIBILI_BD: {
     dns: '180.76.76.76',
+    hosts: {},
     domains: [
       'upos-sz-mirrorbos.bilivideo.com'
     ]
   },
   BILIBILI: {
     dns: 'https://doh.pub/dns-query',
+    hosts: {},
     domains: [
       'upos-sz-mirrorcoso1.bilivideo.com',
       'acg.tv',
@@ -179,6 +182,7 @@ export const DOMESTICS = {
   },
   XIAOMI: {
     dns: 'https://doh.pub/dns-query',
+    hosts: {},
     domains: [
       'mi.com',
       'duokan.com',
@@ -195,6 +199,7 @@ export const DOMESTICS = {
   },
   BYTEDANCE: {
     dns: '180.184.2.2',
+    hosts: {},
     domains: [
       'bytecdn.cn',
       'toutiaoimg.com',
@@ -235,6 +240,7 @@ export const DOMESTICS = {
   },
   BAIDU: {
     dns: '180.76.76.76',
+    hosts: {},
     domains: [
       '91.com',
       'hao123.com',