Add script to count rules for README (#4409)

README.md

@@ -9,8 +9,8 @@ This SonarSource project is a [static code analyzer](https://en.wikipedia.org/wi
 # Features
 
 - Advanced rules based on pattern matching and control flow analysis
-- [370 JS rules](https://rules.sonarsource.com/javascript) and [375 TS rules](https://rules.sonarsource.com/typescript)
-- [25 CSS rules](https://rules.sonarsource.com/css)
+- [389 JS rules](https://rules.sonarsource.com/javascript) and [393 TS rules](https://rules.sonarsource.com/typescript)
+- [26 CSS rules](https://rules.sonarsource.com/css)
 - Compatible with ECMAScript 2015-2020
 - React JSX, Flow, Vue, and AWS lambda functions support for JavaScript and TypeScript
 - CSS, SCSS, SASS, Less, also 'style' inside HTML and VueJS files

package.json

@@ -20,6 +20,7 @@
     "td": "node typedoc/scripts/setup-plugins.js && ./node_modules/.bin/typedoc --options typedoc/typedoc.js",
     "prepare": "husky install",
     "precommit": "pretty-quick --staged",
+    "count-rules": "node tools/count-rules.js",
     "_:bridge:clear": "rimraf lib/*",
     "_:plugin:prepare-bridge": "npm pack && node tools/check-distribution-filepath-length.js && npm run _:plugin:copy-bridge",
     "_:plugin-fetch-node": "node tools/fetch-node/scripts/wrapper.mjs",

tools/count-rules.js

@@ -0,0 +1,53 @@
+const url = require('node:url');
+const path = require('node:path');
+const fs = require('node:fs');
+
+const pathToJsTsRules = path.join(
+  __dirname,
+  '..',
+  'sonar-plugin',
+  'javascript-checks',
+  'src',
+  'main',
+  'resources',
+  'org',
+  'sonar',
+  'l10n',
+  'javascript',
+  'rules',
+  'javascript',
+);
+const pathToCssRules = path.join(
+  __dirname,
+  '..',
+  'sonar-plugin',
+  'css',
+  'src',
+  'main',
+  'resources',
+  'org',
+  'sonar',
+  'l10n',
+  'css',
+  'rules',
+  'css',
+);
+
+const jsTsRules = getJsonFiles(pathToJsTsRules);
+
+const jsRules = jsTsRules.filter(rule => rule.compatibleLanguages.includes('JAVASCRIPT'));
+const tsRules = jsTsRules.filter(rule => rule.compatibleLanguages.includes('TYPESCRIPT'));
+
+const cssRules = 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}`);
+
+function getJsonFiles(pathToRules) {
+  const filenames = fs.readdirSync(pathToRules);
+  return filenames
+    .filter(filename => filename.endsWith('.json') && filename.length <= 'S1234.json'.length)
+    .map(file => require(path.join(pathToRules, file)));
+}