JS-412 Rewrite count-rules into ESM format

package.json

@@ -30,7 +30,7 @@
     "td": "npm --prefix typedoc/searchable-parameters-plugin run setup && npx typedoc --options typedoc/typedoc.js",
     "prepare": "husky install",
     "precommit": "pretty-quick --staged",
-    "count-rules": "node tools/count-rules.cjs",
+    "count-rules": "node tools/count-rules.js",
     "_:bridge:copy-protofiles": "cpy --flat packages/jsts/src/parsers/estree.proto sonar-plugin/bridge/src/main/protobuf && cpy --flat packages/jsts/src/parsers/estree.proto lib/jsts/src/parsers",
     "_:bridge:clear": "rimraf --glob lib/*",
     "_:plugin:prepare-bridge": "npm pack && node tools/check-distribution-filepath-length.cjs && npm run _:plugin:copy-bridge && npm run generate-rules-list",

tools/count-rules.js

@@ -0,0 +1,54 @@
+import path from 'node:path';
+import fs from 'node:fs/promises';
+
+const pathToJsTsRules = path.join(
+  import.meta.dirname,
+  '..',
+  'sonar-plugin',
+  'javascript-checks',
+  'src',
+  'main',
+  'resources',
+  'org',
+  'sonar',
+  'l10n',
+  'javascript',
+  'rules',
+  'javascript',
+);
+const pathToCssRules = path.join(
+  import.meta.dirname,
+  '..',
+  'sonar-plugin',
+  'css',
+  'src',
+  'main',
+  'resources',
+  'org',
+  'sonar',
+  'l10n',
+  'css',
+  'rules',
+  'css',
+);
+
+const jsTsRules = await getJsonFiles(pathToJsTsRules);
+
+const jsRules = jsTsRules.filter(rule => rule.default.compatibleLanguages.includes('JAVASCRIPT'));
+const tsRules = jsTsRules.filter(rule => rule.default.compatibleLanguages.includes('TYPESCRIPT'));
+
+const cssRules = await getJsonFiles(pathToCssRules);
+
+console.log(`JS/TS rules: ${jsTsRules.length}`);
+console.log(`JS rules: ${jsRules.length}`);
+console.log(`TS rules: ${tsRules.length}`);
+console.log(`CSS rules: ${cssRules.length}`);
+
+async function getJsonFiles(pathToRules) {
+  const filenames = await fs.readdir(pathToRules);
+  return Promise.all(
+    filenames
+      .filter(filename => filename.endsWith('.json') && filename.length <= 'S1234.json'.length)
+      .map(async file => await import(path.join(pathToRules, file), { assert: { type: 'json' } })),
+  );
+}