add generate eslint breakdown script

Author: NavrajBal

generate-eslint-breakdown.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# Generate ESLint warnings and errors breakdown by rule with files listed under each rule
+# Output saved to: eslint-warnings-by-rule-frontend.txt and eslint-warnings-by-rule-backend.txt
+
+# Function to process ESLint output and generate breakdown
+generate_breakdown() {
+  local dir=$1
+  local output_file=$2
+  local extensions=$3
+
+  echo "Processing ${dir}..."
+  
+  cd "${dir}" || exit 1
+
+  npx eslint . --ext "${extensions}" --format=json | \
+    jq -r '.[] | 
+      select(.messages | length > 0) | 
+      .filePath as $file | 
+      .messages[] | 
+      "\(.ruleId)|\($file)"' | \
+    sort | \
+    awk -F'|' '
+      BEGIN {
+        prev=""
+        prev_file=""
+        file_count=0
+        total=0
+      }
+      {
+        if ($1 != prev) {
+          if (prev != "") {
+            print "  (" total " issues in " file_count " files)\n"
+          }
+          print $1 ":"
+          prev=$1
+          prev_file=""
+          file_count=0
+          total=0
+        }
+        if ($2 != prev_file) {
+          print "  " $2
+          prev_file=$2
+          file_count++
+        }
+        total++
+      }
+      END {
+        if (prev != "") {
+          print "  (" total " issues in " file_count " files)"
+        }
+      }' > "${output_file}"
+
+  cd .. || exit 1
+}
+
+# Process frontend
+generate_breakdown "frontend" "../eslint-warnings-by-rule-frontend.txt" ".ts,.tsx"
+
+# Process backend
+generate_breakdown "backend" "../eslint-warnings-by-rule-backend.txt" ".ts"
+
+echo ""
+echo "✅ ESLint breakdowns generated:"
+echo "   - eslint-warnings-by-rule-frontend.txt"
+echo "   - eslint-warnings-by-rule-backend.txt"