build: update npm install command to use --legacy-peer-deps

This change modifies the build scripts to use --legacy-peer-deps flag when installing npm dependencies to resolve potential peer dependency conflicts during the build process. The change is applied to both bash (build.sh) and batch (build.bat) build scripts.

frontend/node_modules/@eslint/eslintrc/package.json

@@ -1,15 +1,13 @@
 {
   "name": "@eslint/eslintrc",
-  "version": "3.3.1",
+  "version": "2.1.4",
   "description": "The legacy ESLintRC config file format for ESLint",
   "type": "module",
   "main": "./dist/eslintrc.cjs",
-  "types": "./dist/eslintrc.d.cts",
   "exports": {
     ".": {
       "import": "./lib/index.js",
-      "require": "./dist/eslintrc.cjs",
-      "types": "./lib/types/index.d.ts"
+      "require": "./dist/eslintrc.cjs"
     },
     "./package.json": "./package.json",
     "./universal": {
@@ -28,7 +26,7 @@
     "access": "public"
   },
   "scripts": {
-    "build": "rollup -c && node -e \"fs.copyFileSync('./lib/types/index.d.ts', './dist/eslintrc.d.cts')\"",
+    "build": "rollup -c",
     "lint": "eslint . --report-unused-disable-directives",
     "lint:fix": "npm run lint -- --fix",
     "prepare": "npm run build",
@@ -37,8 +35,7 @@
     "release:generate:beta": "eslint-generate-prerelease beta",
     "release:generate:rc": "eslint-generate-prerelease rc",
     "release:publish": "eslint-publish-release",
-    "test": "mocha -R progress -c 'tests/lib/*.cjs' && c8 mocha -R progress -c 'tests/lib/**/*.js'",
-    "test:types": "tsc -p tests/lib/types/tsconfig.json"
+    "test": "mocha -R progress -c 'tests/lib/*.cjs' && c8 mocha -R progress -c 'tests/lib/**/*.js'"
   },
   "repository": "eslint/eslintrc",
   "funding": "https://opencollective.com/eslint",
@@ -56,22 +53,23 @@
   "devDependencies": {
     "c8": "^7.7.3",
     "chai": "^4.3.4",
-    "eslint": "^9.20.1",
-    "eslint-config-eslint": "^11.0.0",
+    "eslint": "^7.31.0",
+    "eslint-config-eslint": "^7.0.0",
+    "eslint-plugin-jsdoc": "^35.4.1",
+    "eslint-plugin-node": "^11.1.0",
     "eslint-release": "^3.2.0",
     "fs-teardown": "^0.1.3",
     "mocha": "^9.0.3",
     "rollup": "^2.70.1",
-    "shelljs": "^0.8.5",
+    "shelljs": "^0.8.4",
     "sinon": "^11.1.2",
-    "temp-dir": "^2.0.0",
-    "typescript": "^5.7.3"
+    "temp-dir": "^2.0.0"
   },
   "dependencies": {
     "ajv": "^6.12.4",
     "debug": "^4.3.2",
-    "espree": "^10.0.1",
-    "globals": "^14.0.0",
+    "espree": "^9.6.0",
+    "globals": "^13.19.0",
     "ignore": "^5.2.0",
     "import-fresh": "^3.2.1",
     "js-yaml": "^4.1.0",
@@ -79,6 +77,6 @@
     "strip-json-comments": "^3.1.1"
   },
   "engines": {
-    "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+    "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
   }
 }