Check yarnrc for unwanted dep (#3855)

Author: M-i-k-e-l

yarn.config.cjs

@@ -2,18 +2,29 @@ const fs = require('fs');
 const {defineConfig} = require(`@yarnpkg/types`);
 const {logError} = require('./scripts/utils');
 
-function checkYarnLock() {
-  const yarnLock = fs.readFileSync('./yarn.lock', 'utf8');
-  const matches = yarnLock.match(/npm.dev/);
+const UNWANTED_DEPENDENCIES = 'npm.dev';
+
+function checkUnwantedDependencies(file) {
+  const fileContent = fs.readFileSync(file, 'utf8');
+  const matches = fileContent.match(new RegExp(`${UNWANTED_DEPENDENCIES}`, 'g'));
 
   if (matches !== null) {
-    logError('Yarn lock contains unwanted dependencies');
+    logError('Unwanted dependencies found in ' + file);
     process.exit(1);
   }
 }
 
+function checkYarnLock() {
+  checkUnwantedDependencies('./yarn.lock');
+}
+
+function checkYarnRc() {
+  checkUnwantedDependencies('./.yarnrc.yml');
+}
+
 module.exports = defineConfig({
   constraints: async () => {
     checkYarnLock();
+    checkYarnRc();
   }
 });