diff --git a/Build/build-anti-bogus-domain.js b/Build/build-anti-bogus-domain.js
index 368f9d68..7e0e4c0e 100644
--- a/Build/build-anti-bogus-domain.js
+++ b/Build/build-anti-bogus-domain.js
@@ -1,10 +1,8 @@
 // @ts-check
 const path = require('path');
 const { isIPv4, isIPv6 } = require('net');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
-const { withBannerArray } = require('./lib/with-banner');
+const { createRuleset } = require('./lib/create-file');
 const { fetchRemoteTextAndCreateReadlineInterface, readFileByLine } = require('./lib/fetch-remote-text-by-line');
-const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
 const { processLine } = require('./lib/process-line');
 
 (async () => {
@@ -53,36 +51,15 @@ const { processLine } = require('./lib/process-line');
     ' - https://github.com/felixonmars/dnsmasq-china-list'
   ];
 
-  await compareAndWriteFile(
-    withBannerArray(
-      'Sukka\'s Ruleset - Anti Bogus Domain',
-      description,
-      new Date(),
-      surgeRulesetToClashClassicalTextRuleset(result)
-    ),
+  await Promise.all(createRuleset(
+    'Sukka\'s Ruleset - Anti Bogus Domain',
+    description,
+    new Date(),
+    result,
+    'ruleset',
+    path.resolve(__dirname, '../List/ip/reject.conf'),
     path.resolve(__dirname, '../Clash/ip/reject.txt')
-  );
-
-  await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Anti Bogus Domain',
-        description,
-        new Date(),
-        result
-      ),
-      path.resolve(__dirname, '../List/ip/reject.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Anti Bogus Domain',
-        description,
-        new Date(),
-        surgeRulesetToClashClassicalTextRuleset(result)
-      ),
-      path.resolve(__dirname, '../Clash/ip/reject.txt')
-    )
-  ]);
+  ));
 
   console.timeEnd('Total Time - build-anti-bogus-domain');
 })();
diff --git a/Build/build-apple-cdn.js b/Build/build-apple-cdn.js
index 19986b84..11dfde13 100644
--- a/Build/build-apple-cdn.js
+++ b/Build/build-apple-cdn.js
@@ -1,10 +1,6 @@
 const path = require('path');
-
-const { compareAndWriteFile } = require('./lib/string-array-compare');
-const { withBannerArray } = require('./lib/with-banner');
-
+const { createRuleset } = require('./lib/create-file');
 const { parseFelixDnsmasq } = require('./lib/parse-dnsmasq');
-const { surgeRulesetToClashClassicalTextRuleset, surgeDomainsetToClashDomainset } = require('./lib/clash');
 
 (async () => {
   console.time('Total Time - build-apple-cdn-conf');
@@ -26,40 +22,22 @@ const { surgeRulesetToClashClassicalTextRuleset, surgeDomainsetToClashDomainset
   const domainset = res.map(i => `.${i}`);
 
   await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Apple CDN',
-        description,
-        new Date(),
-        ruleset
-      ),
-      path.resolve(__dirname, '../List/non_ip/apple_cdn.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Apple CDN',
-        description,
-        new Date(),
-        surgeRulesetToClashClassicalTextRuleset(ruleset)
-      ),
+    ...createRuleset(
+      'Sukka\'s Ruleset - Apple CDN',
+      description,
+      new Date(),
+      ruleset,
+      'ruleset',
+      path.resolve(__dirname, '../List/non_ip/apple_cdn.conf'),
       path.resolve(__dirname, '../Clash/non_ip/apple_cdn.txt')
     ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Apple CDN',
-        description,
-        new Date(),
-        domainset
-      ),
-      path.resolve(__dirname, '../List/domainset/apple_cdn.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Apple CDN',
-        description,
-        new Date(),
-        surgeDomainsetToClashDomainset(domainset)
-      ),
+    ...createRuleset(
+      'Sukka\'s Ruleset - Apple CDN',
+      description,
+      new Date(),
+      domainset,
+      'domainset',
+      path.resolve(__dirname, '../List/domainset/apple_cdn.conf'),
       path.resolve(__dirname, '../Clash/domainset/apple_cdn.txt')
     )
   ]);
diff --git a/Build/build-cdn-conf.js b/Build/build-cdn-conf.js
index 54cbc1fe..077f5b7c 100644
--- a/Build/build-cdn-conf.js
+++ b/Build/build-cdn-conf.js
@@ -1,11 +1,9 @@
 // @ts-check
 const path = require('path');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
-const { withBannerArray } = require('./lib/with-banner');
+const { createRuleset } = require('./lib/create-file');
 const { minifyRules } = require('./lib/minify-rules');
 const { fetchRemoteTextAndCreateReadlineInterface, readFileByLine } = require('./lib/fetch-remote-text-by-line');
 const Trie = require('./lib/trie');
-const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
 
 (async () => {
   console.time('Total Time - build-cdn-conf');
@@ -48,26 +46,15 @@ const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
   ];
   const ruleset = minifyRules(cdnDomainsList);
 
-  await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - CDN Domains',
-        description,
-        new Date(),
-        ruleset
-      ),
-      path.resolve(__dirname, '../List/non_ip/cdn.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - CDN Domains',
-        description,
-        new Date(),
-        surgeRulesetToClashClassicalTextRuleset(ruleset)
-      ),
-      path.resolve(__dirname, '../Clash/non_ip/cdn.txt')
-    )
-  ]);
+  await Promise.all(createRuleset(
+    'Sukka\'s Ruleset - CDN Domains',
+    description,
+    new Date(),
+    ruleset,
+    'ruleset',
+    path.resolve(__dirname, '../List/non_ip/cdn.conf'),
+    path.resolve(__dirname, '../Clash/non_ip/cdn.txt')
+  ));
 
   console.timeEnd('Total Time - build-cdn-conf');
 })();
diff --git a/Build/build-chn-cidr.js b/Build/build-chn-cidr.js
index aa359a91..5433b5c6 100644
--- a/Build/build-chn-cidr.js
+++ b/Build/build-chn-cidr.js
@@ -1,8 +1,8 @@
 // @ts-check
 const { fetchRemoteTextAndCreateReadlineInterface } = require('./lib/fetch-remote-text-by-line');
-const { withBannerArray } = require('./lib/with-banner');
 const { resolve: pathResolve } = require('path');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
+// This should not use `createRuleset` API since we are going to generate ipcidr for Clash
+const { compareAndWriteFile, withBannerArray } = require('./lib/create-file');
 const { processLine } = require('./lib/process-line');
 
 // https://github.com/misakaio/chnroutes2/issues/25
@@ -28,17 +28,19 @@ const EXCLUDE_CIDRS = [
   const filteredCidr = excludeCidrs(Array.from(cidr), EXCLUDE_CIDRS, true);
   console.log('After Merge:', filteredCidr.length);
 
+  const description = [
+    'License: CC BY-SA 2.0',
+    'Homepage: https://ruleset.skk.moe',
+    'GitHub: https://github.com/SukkaW/Surge',
+    '',
+    'Data from https://misaka.io (misakaio @ GitHub)'
+  ];
+
   await Promise.all([
     compareAndWriteFile(
       withBannerArray(
         'Sukka\'s Ruleset - Mainland China IPv4 CIDR',
-        [
-          'License: CC BY-SA 2.0',
-          'Homepage: https://ruleset.skk.moe',
-          'GitHub: https://github.com/SukkaW/Surge',
-          '',
-          'Data from https://misaka.io (misakaio @ GitHub)'
-        ],
+        description,
         new Date(),
         filteredCidr.map(i => `IP-CIDR,${i}`)
       ),
@@ -47,13 +49,7 @@ const EXCLUDE_CIDRS = [
     compareAndWriteFile(
       withBannerArray(
         'Sukka\'s Ruleset - Mainland China IPv4 CIDR',
-        [
-          'License: CC BY-SA 2.0',
-          'Homepage: https://ruleset.skk.moe',
-          'GitHub: https://github.com/SukkaW/Surge',
-          '',
-          'Data from https://misaka.io (misakaio @ GitHub)'
-        ],
+        description,
         new Date(),
         filteredCidr
       ),
diff --git a/Build/build-domestic-ruleset.js b/Build/build-domestic-ruleset.js
index 769fba34..50a090c5 100644
--- a/Build/build-domestic-ruleset.js
+++ b/Build/build-domestic-ruleset.js
@@ -3,10 +3,8 @@ const path = require('path');
 const { DOMESTICS } = require('../Source/non_ip/domestic');
 const { readFileByLine } = require('./lib/fetch-remote-text-by-line');
 const { processLine } = require('./lib/process-line');
-const { withBannerArray } = require('./lib/with-banner');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
+const { compareAndWriteFile, createRuleset } = require('./lib/create-file');
 const domainSorter = require('./lib/stable-sort-domain');
-const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
 
 (async () => {
   const rl = readFileByLine(path.resolve(__dirname, '../Source/non_ip/domestic.conf'));
@@ -35,22 +33,13 @@ const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
   ];
 
   await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Domestic Domains',
-        rulesetDescription,
-        new Date(),
-        results
-      ),
-      path.resolve(__dirname, '../List/non_ip/domestic.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Domestic Domains',
-        rulesetDescription,
-        new Date(),
-        surgeRulesetToClashClassicalTextRuleset(results)
-      ),
+    ...createRuleset(
+      'Sukka\'s Ruleset - Domestic Domains',
+      rulesetDescription,
+      new Date(),
+      results,
+      'ruleset',
+      path.resolve(__dirname, '../List/non_ip/domestic.conf'),
       path.resolve(__dirname, '../Clash/non_ip/domestic.txt')
     ),
     compareAndWriteFile(
diff --git a/Build/build-phishing-domainset.js b/Build/build-phishing-domainset.js
index aabf8c22..c2956321 100644
--- a/Build/build-phishing-domainset.js
+++ b/Build/build-phishing-domainset.js
@@ -1,11 +1,9 @@
 const { parse } = require('tldts');
 const { processFilterRules } = require('./lib/parse-filter.js');
 const path = require('path');
-const { withBannerArray } = require('./lib/with-banner.js');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
+const { createRuleset } = require('./lib/create-file');
 const { processLine } = require('./lib/process-line.js');
 const domainSorter = require('./lib/stable-sort-domain');
-const { surgeDomainsetToClashDomainset } = require('./lib/clash.js');
 
 const WHITELIST_DOMAIN = new Set([
   'w3s.link',
@@ -152,24 +150,13 @@ const BLACK_TLD = new Set([
     ' - https://gitlab.com/malware-filter/phishing-filter'
   ];
 
-  await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Reject Phishing',
-        description,
-        new Date(),
-        results
-      ),
-      path.resolve(__dirname, '../List/domainset/reject_phishing.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Reject Phishing',
-        description,
-        new Date(),
-        surgeDomainsetToClashDomainset(results)
-      ),
-      path.resolve(__dirname, '../Clash/domainset/reject_phishing.txt')
-    )
-  ]);
+  await Promise.all(createRuleset(
+    'Sukka\'s Ruleset - Reject Phishing',
+    description,
+    new Date(),
+    results,
+    'domainset',
+    path.resolve(__dirname, '../List/domainset/reject_phishing.conf'),
+    path.resolve(__dirname, '../Clash/domainset/reject_phishing.txt')
+  ));
 })();
diff --git a/Build/build-reject-domainset.js b/Build/build-reject-domainset.js
index 9c133a37..1e92e1b6 100644
--- a/Build/build-reject-domainset.js
+++ b/Build/build-reject-domainset.js
@@ -9,14 +9,12 @@ const { processHosts, processFilterRules } = require('./lib/parse-filter');
 const Trie = require('./lib/trie');
 
 const { HOSTS, ADGUARD_FILTERS, PREDEFINED_WHITELIST, PREDEFINED_ENFORCED_BACKLIST } = require('./lib/reject-data-source');
-const { withBannerArray } = require('./lib/with-banner');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
+const { createRuleset } = require('./lib/create-file');
 const { processLine } = require('./lib/process-line');
 const { domainDeduper } = require('./lib/domain-deduper');
 const createKeywordFilter = require('./lib/aho-corasick');
 const { readFileByLine } = require('./lib/fetch-remote-text-by-line');
 const domainSorter = require('./lib/stable-sort-domain');
-const { surgeDomainsetToClashDomainset } = require('./lib/clash');
 
 /** Whitelists */
 const filterRuleWhitelistDomainSets = new Set(PREDEFINED_WHITELIST);
@@ -210,22 +208,13 @@ const domainSuffixSet = new Set();
   const domainset = dudupedDominArray.sort(domainSorter);
 
   await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Reject Base',
-        description,
-        new Date(),
-        domainset
-      ),
-      pathResolve(__dirname, '../List/domainset/reject.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Reject Base',
-        description,
-        new Date(),
-        surgeDomainsetToClashDomainset(domainset)
-      ),
+    ...createRuleset(
+      'Sukka\'s Ruleset - Reject Base',
+      description,
+      new Date(),
+      domainset,
+      'domainset',
+      pathResolve(__dirname, '../List/domainset/reject.conf'),
       pathResolve(__dirname, '../Clash/domainset/reject.txt')
     ),
     fs.promises.writeFile(
diff --git a/Build/build-speedtest-domainset.js b/Build/build-speedtest-domainset.js
index c9e13f52..ff5ea28c 100644
--- a/Build/build-speedtest-domainset.js
+++ b/Build/build-speedtest-domainset.js
@@ -1,12 +1,10 @@
 const { fetch } = require('undici');
 const { domainDeduper } = require('./lib/domain-deduper');
 const path = require('path');
-const { withBannerArray } = require('./lib/with-banner.js');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
+const { createRuleset } = require('./lib/create-file');
 const domainSorter = require('./lib/stable-sort-domain');
 
 const { Sema } = require('async-sema');
-const { surgeDomainsetToClashDomainset } = require('./lib/clash');
 const s = new Sema(2);
 
 /**
@@ -115,24 +113,13 @@ const querySpeedtestApi = async (keyword) => {
     'GitHub: https://github.com/SukkaW/Surge'
   ];
 
-  await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Speedtest Domains',
-        description,
-        new Date(),
-        deduped
-      ),
-      path.resolve(__dirname, '../List/domainset/speedtest.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Speedtest Domains',
-        description,
-        new Date(),
-        surgeDomainsetToClashDomainset(deduped)
-      ),
-      path.resolve(__dirname, '../Clash/domainset/speedtest.txt')
-    )
-  ]);
+  await Promise.all(createRuleset(
+    'Sukka\'s Ruleset - Speedtest Domains',
+    description,
+    new Date(),
+    deduped,
+    'domainset',
+    path.resolve(__dirname, '../List/domainset/speedtest.conf'),
+    path.resolve(__dirname, '../Clash/domainset/speedtest.txt')
+  ));
 })();
diff --git a/Build/build-telegram-cidr.js b/Build/build-telegram-cidr.js
index ec99a565..59152e55 100644
--- a/Build/build-telegram-cidr.js
+++ b/Build/build-telegram-cidr.js
@@ -2,10 +2,8 @@ const { fetchWithRetry } = require('./lib/fetch-retry');
 const { createReadlineInterfaceFromResponse } = require('./lib/fetch-remote-text-by-line');
 const path = require('path');
 const { isIPv4, isIPv6 } = require('net');
-const { withBannerArray } = require('./lib/with-banner');
 const { processLine } = require('./lib/process-line');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
-const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
+const { createRuleset } = require('./lib/create-file');
 
 (async () => {
   console.time('Total Time - build-telegram-cidr');
@@ -43,26 +41,15 @@ const { surgeRulesetToClashClassicalTextRuleset } = require('./lib/clash');
     ' - https://core.telegram.org/resources/cidr.txt'
   ];
 
-  await Promise.all([
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Telegram IP CIDR',
-        description,
-        date,
-        results
-      ),
-      path.resolve(__dirname, '../List/ip/telegram.conf')
-    ),
-    compareAndWriteFile(
-      withBannerArray(
-        'Sukka\'s Ruleset - Telegram IP CIDR',
-        description,
-        date,
-        surgeRulesetToClashClassicalTextRuleset(results)
-      ),
-      path.resolve(__dirname, '../Clash/ip/telegram.txt')
-    )
-  ]);
+  await Promise.all(createRuleset(
+    'Sukka\'s Ruleset - Telegram IP CIDR',
+    description,
+    date,
+    results,
+    'ruleset',
+    path.resolve(__dirname, '../List/ip/telegram.conf'),
+    path.resolve(__dirname, '../Clash/ip/telegram.txt')
+  ));
 
   console.timeEnd('Total Time - build-telegram-cidr');
 })();
diff --git a/Build/build.js b/Build/build.js
index 963838ef..04722995 100644
--- a/Build/build.js
+++ b/Build/build.js
@@ -4,10 +4,8 @@ const path = require('path');
 const { PathScurry } = require('path-scurry');
 const { readFileByLine } = require('./lib/fetch-remote-text-by-line');
 const { processLine } = require('./lib/process-line');
-const { compareAndWriteFile } = require('./lib/string-array-compare');
-const { withBannerArray } = require('./lib/with-banner');
+const { createRuleset } = require('./lib/create-file');
 const { domainDeduper } = require('./lib/domain-deduper');
-const { surgeRulesetToClashClassicalTextRuleset, surgeDomainsetToClashDomainset } = require('./lib/clash');
 
 const MAGIC_COMMAND_SKIP = '# $ custom_build_script';
 const MAGIC_COMMAND_TITLE = '# $ meta_title ';
@@ -102,29 +100,15 @@ async function transformDomainset(sourcePath, relativePath) {
     )
   ];
 
-  await Promise.all([
-    // Surge DOMAIN-SET
-    compareAndWriteFile(
-      withBannerArray(
-        title,
-        description,
-        new Date(),
-        deduped
-      ),
-      path.resolve(outputSurgeDir, relativePath)
-    ),
-    // Clash domain text
-    compareAndWriteFile(
-      withBannerArray(
-        title,
-        description,
-        new Date(),
-        surgeDomainsetToClashDomainset(deduped)
-      ),
-      // change path extname to .txt
-      path.resolve(outputClashDir, `${relativePath.slice(0, -path.extname(relativePath).length)}.txt`)
-    )
-  ]);
+  await Promise.all(createRuleset(
+    title,
+    description,
+    new Date(),
+    deduped,
+    'domainset',
+    path.resolve(outputSurgeDir, relativePath),
+    path.resolve(outputClashDir, `${relativePath.slice(0, -path.extname(relativePath).length)}.txt`)
+  ));
 }
 
 /**
@@ -149,31 +133,13 @@ async function transformRuleset(sourcePath, relativePath) {
     )
   ];
 
-  const lines = Array.from(set);
-
-  const clashSupported = surgeRulesetToClashClassicalTextRuleset(set);
-
-  await Promise.all([
-    // Surge RULE-SET
-    compareAndWriteFile(
-      withBannerArray(
-        title,
-        description,
-        new Date(),
-        lines
-      ),
-      path.resolve(outputSurgeDir, relativePath)
-    ),
-    // Clash domainset
-    compareAndWriteFile(
-      withBannerArray(
-        title,
-        description,
-        new Date(),
-        clashSupported
-      ),
-      // change path extname to .txt
-      path.resolve(outputClashDir, `${relativePath.slice(0, -path.extname(relativePath).length)}.txt`)
-    )
-  ]);
+  await Promise.all(createRuleset(
+    title,
+    description,
+    new Date(),
+    Array.from(set),
+    'ruleset',
+    path.resolve(outputSurgeDir, relativePath),
+    path.resolve(outputClashDir, `${relativePath.slice(0, -path.extname(relativePath).length)}.txt`)
+  ));
 }
diff --git a/Build/lib/create-file.js b/Build/lib/create-file.js
new file mode 100644
index 00000000..8fbd0180
--- /dev/null
+++ b/Build/lib/create-file.js
@@ -0,0 +1,99 @@
+// @ts-check
+const { promises: fsPromises } = require('fs');
+const fse = require('fs-extra');
+const { readFileByLine } = require('./fetch-remote-text-by-line');
+const { surgeDomainsetToClashDomainset, surgeRulesetToClashClassicalTextRuleset } = require('./clash');
+
+/**
+ * @param {string[]} linesA
+ * @param {string} filePath
+ */
+async function compareAndWriteFile(linesA, filePath) {
+  await fse.ensureFile(filePath);
+
+  let isEqual = true;
+  let index = 0;
+
+  for await (const lineB of readFileByLine(filePath)) {
+    const lineA = linesA[index];
+    index++;
+
+    if (lineA[0] === '#' && lineB[0] === '#') {
+      continue;
+    }
+
+    if (lineA !== lineB) {
+      isEqual = false;
+      break;
+    }
+  }
+
+  if (!isEqual || index !== linesA.length - 1) {
+    await fsPromises.writeFile(
+      filePath,
+      linesA.join('\n'),
+      { encoding: 'utf-8' }
+    );
+  } else {
+    console.log(`Same Content, bail out writing: ${filePath}`);
+  }
+}
+module.exports.compareAndWriteFile = compareAndWriteFile;
+
+/**
+ * @param {string} title
+ * @param {string[]} description
+ * @param {Date} date
+ * @param {string[]} content
+ * @returns {string[]}
+ */
+const withBannerArray = (title, description, date, content) => {
+  return [
+    '########################################',
+    `# ${title}`,
+    `# Last Updated: ${date.toISOString()}`,
+    `# Size: ${content.length}`,
+    ...description.map(line => (line ? `# ${line}` : '#')),
+    '########################################',
+    ...content,
+    '################# END ###################',
+    ''
+  ];
+};
+module.exports.withBannerArray = withBannerArray;
+
+/**
+ * @param {string} title
+ * @param {string[]} description
+ * @param {Date} date
+ * @param {string[]} content
+ * @param {'ruleset' | 'domainset'} type
+ * @param {string} surgePath
+ * @param {string} clashPath
+ */
+const createRuleset = (
+  title, description, date, content,
+  type, surgePath, clashPath
+) => {
+  const surgeContent = withBannerArray(title, description, date, content);
+
+  let _clashContent;
+  switch (type) {
+    case 'domainset':
+      _clashContent = surgeDomainsetToClashDomainset(content);
+      break;
+    case 'ruleset':
+      _clashContent = surgeRulesetToClashClassicalTextRuleset(content);
+      break;
+    default:
+      throw new TypeError(`Unknown type: ${type}`);
+  }
+
+  const clashContent = withBannerArray(title, description, date, _clashContent);
+
+  return [
+    compareAndWriteFile(surgeContent, surgePath),
+    compareAndWriteFile(clashContent, clashPath)
+  ];
+};
+module.exports.createRuleset = createRuleset;
diff --git a/Build/lib/string-array-compare.js b/Build/lib/string-array-compare.js
deleted file mode 100644
index 741d4700..00000000
--- a/Build/lib/string-array-compare.js
+++ /dev/null
@@ -1,41 +0,0 @@
-// @ts-check
-const { promises: fsPromises } = require('fs');
-const fse = require('fs-extra');
-const { readFileByLine } = require('./fetch-remote-text-by-line');
-
-/**
- * @param {string[]} linesA
- * @param {string} filePath
- */
-async function compareAndWriteFile(linesA, filePath) {
-  await fse.ensureFile(filePath);
-
-  let isEqual = true;
-  let index = 0;
-
-  for await (const lineB of readFileByLine(filePath)) {
-    const lineA = linesA[index];
-    index++;
-
-    if (lineA[0] === '#' && lineB[0] === '#') {
-      continue;
-    }
-
-    if (lineA !== lineB) {
-      isEqual = false;
-      break;
-    }
-  }
-
-  if (!isEqual || index !== linesA.length - 1) {
-    await fsPromises.writeFile(
-      filePath,
-      linesA.join('\n'),
-      { encoding: 'utf-8' }
-    );
-  } else {
-    console.log(`Same Content, bail out writing: ${filePath}`);
-  }
-}
-
-module.exports.compareAndWriteFile = compareAndWriteFile;
diff --git a/Build/lib/with-banner.js b/Build/lib/with-banner.js
deleted file mode 100644
index 833254f6..00000000
--- a/Build/lib/with-banner.js
+++ /dev/null
@@ -1,41 +0,0 @@
-// @ts-check
-
-/**
- * @param {string} title
- * @param {string[]} description
- * @param {Date} date
- * @param {string[]} content
- * @returns {string}
- */
-// const withBanner = (title, description, date, content) => {
-//   return `########################################
-// # ${title}
-// # Last Updated: ${date.toISOString()}
-// # Size: ${content.length}
-// ${description.map(line => (line ? `# ${line}` : '#')).join('\n')}
-// ########################################\n${content.join('\n')}\n################# END ###################\n`;
-// };
-// module.exports.withBanner = withBanner;
-
-/**
- * @param {string} title
- * @param {string[]} description
- * @param {Date} date
- * @param {string[]} content
- * @returns {string[]}
- */
-const withBannerArray = (title, description, date, content) => {
-  return [
-    '########################################',
-    `# ${title}`,
-    `# Last Updated: ${date.toISOString()}`,
-    `# Size: ${content.length}`,
-    ...description.map(line => (line ? `# ${line}` : '#')),
-    '########################################',
-    ...content,
-    '################# END ###################',
-    ''
-  ];
-};
-
-module.exports.withBannerArray = withBannerArray;