chore: drop unused SWR hooks and dependency

useSchools, useFilters, useMetrics and useSchoolDetails were imported by
nothing and were the only consumers of swr. All data fetching goes through
lib/api.ts on the server.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

nextjs-app/hooks/useFilters.ts

@@ -1,29 +0,0 @@
-/**
- * Custom hook for fetching filter options with SWR
- */
-
-'use client';
-
-import useSWR from 'swr';
-import { fetcher } from '@/lib/api';
-import type { FiltersResponse } from '@/lib/types';
-
-export function useFilters() {
-  const { data, error, isLoading } = useSWR<FiltersResponse>(
-    '/filters',
-    fetcher,
-    {
-      revalidateOnFocus: false,
-      dedupingInterval: 60000, // 1 minute
-    }
-  );
-
-  return {
-    filters: data,
-    localAuthorities: data?.local_authorities || [],
-    schoolTypes: data?.school_types || [],
-    years: data?.years || [],
-    isLoading,
-    error,
-  };
-}

nextjs-app/hooks/useMetrics.ts

@@ -1,28 +0,0 @@
-/**
- * Custom hook for fetching metric definitions with SWR
- */
-
-'use client';
-
-import useSWR from 'swr';
-import { fetcher } from '@/lib/api';
-import type { MetricsResponse } from '@/lib/types';
-
-export function useMetrics() {
-  const { data, error, isLoading } = useSWR<MetricsResponse>(
-    '/metrics',
-    fetcher,
-    {
-      revalidateOnFocus: false,
-      dedupingInterval: 60000, // 1 minute
-    }
-  );
-
-  return {
-    metrics: data?.metrics || [],
-    metricsList: data?.metrics || [],
-    getMetric: (key: string) => data?.metrics?.find(m => m.key === key),
-    isLoading,
-    error,
-  };
-}

nextjs-app/hooks/useSchoolDetails.ts

@@ -1,28 +0,0 @@
-/**
- * Custom hook for fetching school details with SWR
- */
-
-'use client';
-
-import useSWR from 'swr';
-import { fetcher } from '@/lib/api';
-import type { SchoolDetailsResponse } from '@/lib/types';
-
-export function useSchoolDetails(urn: number | null) {
-  const { data, error, isLoading, mutate } = useSWR<SchoolDetailsResponse>(
-    urn ? `/schools/${urn}` : null,
-    fetcher,
-    {
-      revalidateOnFocus: false,
-      dedupingInterval: 30000, // 30 seconds
-    }
-  );
-
-  return {
-    schoolInfo: data?.school_info,
-    yearlyData: data?.yearly_data || [],
-    isLoading,
-    error,
-    mutate,
-  };
-}

nextjs-app/hooks/useSchools.ts

@@ -1,46 +0,0 @@
-/**
- * Custom hook for fetching schools with SWR
- */
-
-'use client';
-
-import useSWR from 'swr';
-import { fetcher } from '@/lib/api';
-import type { SchoolsResponse, SchoolSearchParams } from '@/lib/types';
-
-export function useSchools(params: SchoolSearchParams = {}, shouldFetch: boolean = true) {
-  const queryParams = new URLSearchParams();
-
-  Object.entries(params).forEach(([key, value]) => {
-    if (value !== undefined && value !== null && value !== '') {
-      queryParams.set(key, String(value));
-    }
-  });
-
-  const queryString = queryParams.toString();
-  const url = `/schools${queryString ? `?${queryString}` : ''}`;
-
-  const { data, error, isLoading, mutate } = useSWR<SchoolsResponse>(
-    shouldFetch ? url : null,
-    fetcher,
-    {
-      revalidateOnFocus: false,
-      dedupingInterval: 5000, // 5 seconds
-    }
-  );
-
-  return {
-    schools: data?.schools || [],
-    pagination: data ? {
-      page: data.page,
-      page_size: data.page_size,
-      total: data.total,
-      total_pages: data.total_pages,
-    } : null,
-    searchMode: data?.search_mode,
-    locationInfo: data?.location_info,
-    isLoading,
-    error,
-    mutate,
-  };
-}

nextjs-app/package-lock.json

@@ -21,7 +21,6 @@
         "react-chartjs-2": "^5.3.1",
         "react-dom": "^19.2.4",
         "react-leaflet": "^5.0.0",
-        "swr": "^2.4.0",
         "typescript": "^5.9.3",
         "zod": "^4.3.6"
       },
@@ -4150,7 +4149,9 @@
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/dequal/-/dequal-2.0.3.tgz",
       "integrity": "sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==",
+      "dev": true,
       "license": "MIT",
+      "peer": true,
       "engines": {
         "node": ">=6"
       }
@@ -9154,19 +9155,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/swr": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/swr/-/swr-2.4.0.tgz",
-      "integrity": "sha512-sUlC20T8EOt1pHmDiqueUWMmRRX03W7w5YxovWX7VR2KHEPCTMly85x05vpkP5i6Bu4h44ePSMD9Tc+G2MItFw==",
-      "license": "MIT",
-      "dependencies": {
-        "dequal": "^2.0.3",
-        "use-sync-external-store": "^1.6.0"
-      },
-      "peerDependencies": {
-        "react": "^16.11.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
-      }
-    },
     "node_modules/symbol-tree": {
       "version": "3.2.4",
       "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
@@ -9627,15 +9615,6 @@
         "punycode": "^2.1.0"
       }
     },
-    "node_modules/use-sync-external-store": {
-      "version": "1.6.0",
-      "resolved": "https://registry.npmjs.org/use-sync-external-store/-/use-sync-external-store-1.6.0.tgz",
-      "integrity": "sha512-Pp6GSwGP/NrPIrxVFAIkOQeyw8lFenOHijQWkUTrDvrF4ALqylP2C/KCkeS9dpUM3KvYRQhna5vt7IL95+ZQ9w==",
-      "license": "MIT",
-      "peerDependencies": {
-        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
-      }
-    },
     "node_modules/v8-to-istanbul": {
       "version": "9.3.0",
       "resolved": "https://registry.npmjs.org/v8-to-istanbul/-/v8-to-istanbul-9.3.0.tgz",

nextjs-app/package.json

@@ -26,7 +26,6 @@
     "react-chartjs-2": "^5.3.1",
     "react-dom": "^19.2.4",
     "react-leaflet": "^5.0.0",
-    "swr": "^2.4.0",
     "typescript": "^5.9.3",
     "zod": "^4.3.6"
   },