[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_293":294,"_295":296},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_218":-5,"_20":219,"_22":220,"_221":222,"_223":224,"_26":225,"_24":226,"_227":-5,"_228":-5,"_229":57,"_230":231,"_232":48,"_233":-5,"_234":-5,"_235":236},"routes/_app.x.$handle.$name.branch.$branch.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":25,"_26":27,"_28":-5,"_29":-5,"_30":-5,"_31":-5,"_32":-5},"handle","pro989","name","pdf","branchName","main","version","path","frontend","project",{"_36":165,"_13":14,"_49":166,"_167":-5,"_168":57,"_169":170,"_171":170,"_172":-5,"_173":-5,"_174":175,"_176":158,"_177":48,"_178":48,"_179":-5,"_180":51,"_181":182,"_183":-5,"_184":-5,"_185":-5,"_186":-5,"_187":188,"_189":188,"_190":191,"_192":191,"_193":191,"_194":188,"_195":188,"_196":197,"_198":199,"_200":201,"_202":57},"tree",[79,80,81,82],"file",{"_36":75,"_13":19,"_39":42,"_41":-5,"_43":44,"_45":76,"_47":48,"_49":77,"_17":51,"_52":73,"_54":-5,"_56":57,"_58":-5,"_18":78},"contents",[33,34,35],"upstream","pull","ahead","behind","envVars",{"_36":68,"_13":69,"_39":70,"_41":42,"_43":44,"_45":71,"_47":48,"_49":72,"_17":51,"_52":73,"_54":-5,"_56":57,"_58":-5,"_18":74},{"_36":60,"_13":61,"_39":62,"_41":42,"_43":44,"_45":63,"_47":48,"_49":64,"_17":65,"_52":24,"_54":66,"_56":57,"_58":-5,"_18":67},{"_36":37,"_13":38,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":50,"_17":51,"_52":53,"_54":55,"_56":57,"_58":-5,"_18":59},"id","59d6d736-3ccf-11f0-8a00-9e149126039e","index.tsx","fileId","59d6d7fe-3ccf-11f0-8a00-9e149126039e","parentId","7e2b6146-c9bc-4a73-a112-d087fe88644f","branchId","1bf079a4-3ccf-11f0-ad26-9e149126039e","branchVersion",5,"latest",true,"createdAt",["D",1748552171158],0,"fileType","script","content","/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React from \"https://esm.sh/react@18.2.0?deps=react@18.2.0\";\nimport { createRoot } from \"https://esm.sh/react-dom@18.2.0/client?deps=react@18.2.0,react-dom@18.2.0\";\nimport App from \"./components/App.tsx\";\n\nconst root = createRoot(document.getElementById(\"root\")!);\nroot.render();","deleted",false,"label",[19,38],"f90dbf58-3cd0-11f0-b374-9e149126039e","index.html","565cd0f6-3ccf-11f0-9526-9e149126039e",12,["D",1748552867765],2,"\n\n\n \n \n PDF Split & Merge Tool\n \n \n 📄\">\n \n\n\n

\n \n\n",[19,61],"6128639c-3ccf-11f0-b267-9e149126039e","components","de4f7791-6c65-4820-8388-8155d41361c2",6,["D",1748552183436],"directory",[19,69],"565cd6c8-3ccf-11f0-9526-9e149126039e",4,["D",1748552165324],[19],{"_36":148,"_13":149,"_39":150,"_41":-5,"_43":44,"_45":151,"_47":48,"_49":152,"_17":51,"_52":73,"_54":-5,"_56":57,"_58":-5,"_89":153,"_18":154},{"_36":75,"_13":19,"_39":42,"_41":-5,"_43":44,"_45":76,"_47":48,"_49":106,"_17":51,"_52":73,"_54":-5,"_56":57,"_58":-5,"_89":107,"_18":108},{"_36":92,"_13":93,"_39":94,"_41":-5,"_43":44,"_45":65,"_47":48,"_49":95,"_17":51,"_52":73,"_54":-5,"_56":57,"_58":-5,"_89":96,"_18":97},{"_36":83,"_13":84,"_39":85,"_41":-5,"_43":44,"_45":86,"_47":48,"_49":87,"_17":51,"_52":24,"_54":88,"_56":57,"_58":-5,"_89":90,"_18":91},"3ac217a2-3ccf-11f0-9a5e-9e149126039e","README.md","3ac21856-3ccf-11f0-9a5e-9e149126039e",1,["D",1748552119012],"# PDF Split & Merge Tool\n\nA web-based tool for splitting and merging PDF files built on Val Town.\n\n## Features\n\n- **Split PDF**: Extract specific pages or page ranges from a PDF\n- **Merge PDFs**: Combine multiple PDF files into one\n- **Preview**: View PDF pages before processing\n- **Download**: Get processed PDFs instantly\n\n## Project Structure\n\n```\n├── backend/\n│ ├── index.ts # Main Hono server with API routes\n│ └── README.md # Backend documentation\n├── frontend/\n│ ├── components/\n│ │ ├── App.tsx # Main React application\n│ │ ├── PdfSplitter.tsx # PDF splitting component\n│ │ ├── PdfMerger.tsx # PDF merging component\n│ │ └── PdfViewer.tsx # PDF preview component\n│ ├── index.html # Main HTML template\n│ ├── index.tsx # Frontend entry point\n│ └── style.css # Custom styles\n├── shared/\n│ └── types.ts # Shared TypeScript types\n└── README.md # This file\n```\n\n## API Endpoints\n\n- `GET /` - Serve the main application\n- `POST /api/split` - Split a PDF file\n- `POST /api/merge` - Merge multiple PDF files\n- `GET /frontend/*` - Serve frontend assets\n- `GET /shared/*` - Serve shared assets\n\n## Usage\n\n1. Visit the application URL\n2. Choose between Split or Merge mode\n3. Upload your PDF file(s)\n4. Configure split ranges or merge order\n5. Download the processed PDF\n\n## Technology Stack\n\n- **Backend**: Hono (TypeScript)\n- **Frontend**: React 18.2.0 with TypeScript\n- **PDF Processing**: PDF-lib library\n- **Styling**: TailwindCSS\n- **Storage**: Client-side file handling (no server storage)","children",[],[84],"3de9008a-3ccf-11f0-ac45-9e149126039e","shared","5fdcc53d-2e72-460f-96c7-a6242d5172e5",["D",1748552124295],[98],[93],{"_36":99,"_13":100,"_39":101,"_41":94,"_43":44,"_45":65,"_47":48,"_49":102,"_17":51,"_52":53,"_54":103,"_56":57,"_58":-5,"_89":104,"_18":105},"3de8fb08-3ccf-11f0-ac45-9e149126039e","types.ts","3de8fb9e-3ccf-11f0-ac45-9e149126039e",["D",1748552124295],"// Shared types for PDF operations\n\nexport interface SplitRequest {\n file: string; // base64 encoded PDF\n pages: string; // e.g., \"1-3,5,7-9\"\n filename: string;\n}\n\nexport interface MergeRequest {\n files: Array<{\n data: string; // base64 encoded PDF\n filename: string;\n }>;\n outputFilename: string;\n}\n\nexport interface ApiResponse {\n success: boolean;\n data?: string; // base64 encoded result PDF\n filename?: string;\n error?: string;\n}\n\nexport interface PdfInfo {\n pageCount: number;\n filename: string;\n size: number;\n}",[],[93,100],["D",1748552165324],[109,110,111],[19],{"_36":68,"_13":69,"_39":70,"_41":42,"_43":44,"_45":71,"_47":48,"_49":118,"_17":51,"_52":73,"_54":-5,"_56":57,"_58":-5,"_89":119,"_18":120},{"_36":60,"_13":61,"_39":62,"_41":42,"_43":44,"_45":63,"_47":48,"_49":115,"_17":65,"_52":24,"_54":66,"_56":57,"_58":-5,"_89":116,"_18":117},{"_36":37,"_13":38,"_39":40,"_41":42,"_43":44,"_45":46,"_47":48,"_49":112,"_17":51,"_52":53,"_54":55,"_56":57,"_58":-5,"_89":113,"_18":114},["D",1748552171158],[],[19,38],["D",1748552867765],[],[19,61],["D",1748552183436],[121,122,123],[19,69],{"_36":140,"_13":141,"_39":142,"_41":70,"_43":44,"_45":143,"_47":48,"_49":144,"_17":65,"_52":53,"_54":145,"_56":57,"_58":-5,"_89":146,"_18":147},{"_36":132,"_13":133,"_39":134,"_41":70,"_43":44,"_45":135,"_47":48,"_49":136,"_17":86,"_52":53,"_54":137,"_56":57,"_58":-5,"_89":138,"_18":139},{"_36":124,"_13":125,"_39":126,"_41":70,"_43":44,"_45":127,"_47":48,"_49":128,"_17":86,"_52":53,"_54":129,"_56":57,"_58":-5,"_89":130,"_18":131},"15c6a470-3cd1-11f0-af85-9e149126039e","PdfSplitter.tsx","7404c712-3ccf-11f0-b55a-9e149126039e",14,["D",1748552915943],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState, useRef } from \"https://esm.sh/react@18.2.0?deps=react@18.2.0\";\nimport type { SplitRequest, ApiResponse, PdfInfo } from \"../../shared/types.ts\";\n\nexport default function PdfSplitter() {\n const [file, setFile] = useState(null);\n const [pdfInfo, setPdfInfo] = useState(null);\n const [pageRanges, setPageRanges] = useState('');\n const [isProcessing, setIsProcessing] = useState(false);\n const [dragOver, setDragOver] = useState(false);\n const fileInputRef = useRef(null);\n\n const handleFileSelect = async (selectedFile: File) => {\n if (selectedFile.type !== 'application/pdf') {\n alert('Please select a PDF file');\n return;\n }\n\n setFile(selectedFile);\n \n // Get PDF info using PDF-lib\n try {\n const arrayBuffer = await selectedFile.arrayBuffer();\n const { PDFDocument } = await import(\"https://esm.sh/pdf-lib@1.17.1\");\n const pdfDoc = await PDFDocument.load(arrayBuffer);\n \n setPdfInfo({\n pageCount: pdfDoc.getPageCount(),\n filename: selectedFile.name,\n size: selectedFile.size\n });\n \n // Set default page range to all pages\n setPageRanges(`1-${pdfDoc.getPageCount()}`);\n } catch (error) {\n console.error('Error reading PDF:', error);\n alert('Error reading PDF file');\n }\n };\n\n const handleDrop = (e: React.DragEvent) => {\n e.preventDefault();\n setDragOver(false);\n \n const files = Array.from(e.dataTransfer.files);\n if (files.length > 0) {\n handleFileSelect(files[0]);\n }\n };\n\n const handleDragOver = (e: React.DragEvent) => {\n e.preventDefault();\n setDragOver(true);\n };\n\n const handleDragLeave = (e: React.DragEvent) => {\n e.preventDefault();\n setDragOver(false);\n };\n\n const handleSplit = async () => {\n if (!file || !pageRanges.trim()) {\n alert('Please select a file and specify page ranges');\n return;\n }\n\n setIsProcessing(true);\n\n try {\n // Convert file to base64\n const arrayBuffer = await file.arrayBuffer();\n const base64 = btoa(String.fromCharCode(...new Uint8Array(arrayBuffer)));\n\n const request: SplitRequest = {\n file: base64,\n pages: pageRanges.trim(),\n filename: file.name\n };\n\n const response = await fetch('/api/split', {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n },\n body: JSON.stringify(request),\n });\n\n const result: ApiResponse = await response.json();\n\n if (result.success && result.data && result.filename) {\n // Create download link\n const binaryString = atob(result.data);\n const bytes = new Uint8Array(binaryString.length);\n for (let i = 0; i < binaryString.length; i++) {\n bytes[i] = binaryString.charCodeAt(i);\n }\n \n const blob = new Blob([bytes], { type: 'application/pdf' });\n const url = URL.createObjectURL(blob);\n \n const a = document.createElement('a');\n a.href = url;\n a.download = result.filename;\n document.body.appendChild(a);\n a.click();\n document.body.removeChild(a);\n URL.revokeObjectURL(url);\n } else {\n alert(result.error || 'Failed to split PDF');\n }\n } catch (error) {\n console.error('Error splitting PDF:', error);\n alert('Error splitting PDF');\n } finally {\n setIsProcessing(false);\n }\n };\n\n const formatFileSize = (bytes: number) => {\n if (bytes === 0) return '0 Bytes';\n const k = 1024;\n const sizes = ['Bytes', 'KB', 'MB', 'GB'];\n const i = Math.floor(Math.log(bytes) / Math.log(k));\n return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];\n };\n\n return (\n

Split PDF

\n \n {/* File Upload Area */}\n fileInputRef.current?.click()}\n >\n e.target.files?.[0] && handleFileSelect(e.target.files[0])}\n className=\"hidden\"\n />\n \n {file ? (\n

✅

{file.name}

\n {pdfInfo && (\n

\n {pdfInfo.pageCount} pages • {formatFileSize(pdfInfo.size)}\n

\n )}\n

\n ) : (\n

📄

Drop PDF file here or click to browse

Supports PDF files only

\n )}\n

\n\n {/* Page Range Input */}\n {pdfInfo && (\n

\n \n Page Ranges to Extract\n \n setPageRanges(e.target.value)}\n placeholder=\"e.g., 1-3,5,7-9\"\n className=\"input-3d w-full px-4 py-3 rounded-lg text-white placeholder-gray-400 focus:outline-none transition-all\"\n />\n

\n Examples: \"1-3\" (pages 1 to 3), \"1,3,5\" (pages 1, 3, and 5), \"1-3,5,7-9\" (pages 1-3, 5, and 7-9)\n

\n Total pages available: {pdfInfo.pageCount}\n

\n )}\n\n {/* Split Button */}\n \n {isProcessing ? (\n \n \n Processing...\n \n ) : (\n '✂️ Split PDF'\n )}\n \n \n );\n}",[],[19,69,125],"2b59b7f0-3cd1-11f0-a9b0-9e149126039e","PdfMerger.tsx","8a86d746-3ccf-11f0-a1b6-9e149126039e",15,["D",1748552952152],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState, useRef } from \"https://esm.sh/react@18.2.0?deps=react@18.2.0\";\nimport type { MergeRequest, ApiResponse, PdfInfo } from \"../../shared/types.ts\";\n\ninterface FileWithInfo {\n file: File;\n info: PdfInfo;\n}\n\nexport default function PdfMerger() {\n const [files, setFiles] = useState([]);\n const [outputFilename, setOutputFilename] = useState('merged.pdf');\n const [isProcessing, setIsProcessing] = useState(false);\n const [dragOver, setDragOver] = useState(false);\n const fileInputRef = useRef(null);\n\n const handleFilesSelect = async (selectedFiles: FileList) => {\n const pdfFiles = Array.from(selectedFiles).filter(file => file.type === 'application/pdf');\n \n if (pdfFiles.length === 0) {\n alert('Please select PDF files only');\n return;\n }\n\n const newFilesWithInfo: FileWithInfo[] = [];\n\n for (const file of pdfFiles) {\n try {\n const arrayBuffer = await file.arrayBuffer();\n const { PDFDocument } = await import(\"https://esm.sh/pdf-lib@1.17.1\");\n const pdfDoc = await PDFDocument.load(arrayBuffer);\n \n newFilesWithInfo.push({\n file,\n info: {\n pageCount: pdfDoc.getPageCount(),\n filename: file.name,\n size: file.size\n }\n });\n } catch (error) {\n console.error(`Error reading PDF ${file.name}:`, error);\n alert(`Error reading PDF file: ${file.name}`);\n }\n }\n\n setFiles(prev => [...prev, ...newFilesWithInfo]);\n };\n\n const handleDrop = (e: React.DragEvent) => {\n e.preventDefault();\n setDragOver(false);\n \n const droppedFiles = e.dataTransfer.files;\n if (droppedFiles.length > 0) {\n handleFilesSelect(droppedFiles);\n }\n };\n\n const handleDragOver = (e: React.DragEvent) => {\n e.preventDefault();\n setDragOver(true);\n };\n\n const handleDragLeave = (e: React.DragEvent) => {\n e.preventDefault();\n setDragOver(false);\n };\n\n const removeFile = (index: number) => {\n setFiles(prev => prev.filter((_, i) => i !== index));\n };\n\n const moveFile = (fromIndex: number, toIndex: number) => {\n if (toIndex < 0 || toIndex >= files.length) return;\n \n setFiles(prev => {\n const newFiles = [...prev];\n const [movedFile] = newFiles.splice(fromIndex, 1);\n newFiles.splice(toIndex, 0, movedFile);\n return newFiles;\n });\n };\n\n const handleMerge = async () => {\n if (files.length < 2) {\n alert('Please select at least 2 PDF files to merge');\n return;\n }\n\n setIsProcessing(true);\n\n try {\n const filesData = await Promise.all(\n files.map(async ({ file }) => {\n const arrayBuffer = await file.arrayBuffer();\n const base64 = btoa(String.fromCharCode(...new Uint8Array(arrayBuffer)));\n return {\n data: base64,\n filename: file.name\n };\n })\n );\n\n const request: MergeRequest = {\n files: filesData,\n outputFilename: outputFilename || 'merged.pdf'\n };\n\n const response = await fetch('/api/merge', {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json',\n },\n body: JSON.stringify(request),\n });\n\n const result: ApiResponse = await response.json();\n\n if (result.success && result.data && result.filename) {\n // Create download link\n const binaryString = atob(result.data);\n const bytes = new Uint8Array(binaryString.length);\n for (let i = 0; i < binaryString.length; i++) {\n bytes[i] = binaryString.charCodeAt(i);\n }\n \n const blob = new Blob([bytes], { type: 'application/pdf' });\n const url = URL.createObjectURL(blob);\n \n const a = document.createElement('a');\n a.href = url;\n a.download = result.filename;\n document.body.appendChild(a);\n a.click();\n document.body.removeChild(a);\n URL.revokeObjectURL(url);\n } else {\n alert(result.error || 'Failed to merge PDFs');\n }\n } catch (error) {\n console.error('Error merging PDFs:', error);\n alert('Error merging PDFs');\n } finally {\n setIsProcessing(false);\n }\n };\n\n const formatFileSize = (bytes: number) => {\n if (bytes === 0) return '0 Bytes';\n const k = 1024;\n const sizes = ['Bytes', 'KB', 'MB', 'GB'];\n const i = Math.floor(Math.log(bytes) / Math.log(k));\n return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];\n };\n\n const totalPages = files.reduce((sum, { info }) => sum + info.pageCount, 0);\n\n return (\n

Merge PDFs

\n \n {/* File Upload Area */}\n fileInputRef.current?.click()}\n >\n e.target.files && handleFilesSelect(e.target.files)}\n className=\"hidden\"\n />\n \n

📄

Drop PDF files here or click to browse

Select multiple PDF files to merge

\n\n {/* File List */}\n {files.length > 0 && (\n

\n Files to Merge ({files.length} files, {totalPages} total pages)\n

\n {files.map(({ file, info }, index) => (\n

\n {index + 1}.\n

{info.filename}

\n {info.pageCount} pages • {formatFileSize(info.size)}\n

\n moveFile(index, index - 1)}\n disabled={index === 0}\n className=\"p-2 text-gray-400 hover:text-blue-400 disabled:opacity-30 transition-all hover:scale-110\"\n title=\"Move up\"\n >\n ⬆️\n \n moveFile(index, index + 1)}\n disabled={index === files.length - 1}\n className=\"p-2 text-gray-400 hover:text-blue-400 disabled:opacity-30 transition-all hover:scale-110\"\n title=\"Move down\"\n >\n ⬇️\n \n removeFile(index)}\n className=\"p-2 text-red-400 hover:text-red-300 transition-all hover:scale-110\"\n title=\"Remove\"\n >\n 🗑️\n \n

\n ))}\n

\n )}\n\n {/* Output Filename */}\n {files.length > 0 && (\n

\n \n Output Filename\n \n setOutputFilename(e.target.value)}\n placeholder=\"merged.pdf\"\n className=\"input-3d w-full px-4 py-3 rounded-lg text-white placeholder-gray-400 focus:outline-none transition-all\"\n />\n

\n )}\n\n {/* Merge Button */}\n \n {isProcessing ? (\n \n \n Processing...\n \n ) : (\n '🔗 Merge PDFs'\n )}\n \n\n {files.length === 1 && (\n

\n Add at least one more PDF file to enable merging\n

\n )}\n \n );\n}",[],[19,69,133],"04d792dc-3cd1-11f0-861a-9e149126039e","App.tsx","612859ec-3ccf-11f0-b267-9e149126039e",13,["D",1748552887547],"/** @jsxImportSource https://esm.sh/react@18.2.0 */\nimport React, { useState } from \"https://esm.sh/react@18.2.0?deps=react@18.2.0\";\nimport PdfSplitter from \"./PdfSplitter.tsx\";\nimport PdfMerger from \"./PdfMerger.tsx\";\n\ntype Mode = 'split' | 'merge';\n\nexport default function App() {\n const [mode, setMode] = useState('split');\n\n return (\n

\n {/* Header */}\n

\n 📄 PDF Split & Merge Tool\n

\n Split PDFs into pages or merge multiple PDFs into one\n

\n\n {/* Mode Selector */}\n

\n setMode('split')}\n className={`px-8 py-4 rounded-lg font-medium transition-all ${\n mode === 'split'\n ? 'mode-button-active text-white'\n : 'mode-button-inactive text-gray-300 hover:text-white'\n }`}\n >\n ✂️ Split PDF\n \n setMode('merge')}\n className={`px-8 py-4 rounded-lg font-medium transition-all ${\n mode === 'merge'\n ? 'mode-button-active text-white'\n : 'mode-button-inactive text-gray-300 hover:text-white'\n }`}\n >\n 🔗 Merge PDFs\n \n

\n\n {/* Main Content */}\n

\n {mode === 'split' ? : }\n

\n\n {/* Footer */}\n

\n );\n}",[],[19,69,141],"514c0604-3ccf-11f0-bfcc-9e149126039e","backend","e65c4410-c56d-4760-b917-995716232a21",3,["D",1748552156824],[155],[149],{"_36":156,"_13":157,"_39":158,"_41":150,"_43":44,"_45":159,"_47":48,"_49":160,"_17":86,"_52":161,"_54":162,"_56":57,"_58":-5,"_89":163,"_18":164},"8d0fd22e-3ccf-11f0-9805-9e149126039e","index.ts","514bf560-3ccf-11f0-bfcc-9e149126039e",9,["D",1748552257091],"http","import { Hono } from \"https://esm.sh/hono@3.11.7\";\nimport { PDFDocument } from \"https://esm.sh/pdf-lib@1.17.1\";\nimport { readFile, serveFile } from \"https://esm.town/v/std/utils@85-main/index.ts\";\nimport type { SplitRequest, MergeRequest, ApiResponse } from \"../shared/types.ts\";\n\nconst app = new Hono();\n\n// Unwrap Hono errors to see original error details\napp.onError((err, c) => {\n throw err;\n});\n\n// Serve frontend assets\napp.get(\"/frontend/*\", c => serveFile(c.req.path, import.meta.url));\napp.get(\"/shared/*\", c => serveFile(c.req.path, import.meta.url));\n\n// Serve main application\napp.get(\"/\", async c => {\n const html = await readFile(\"/frontend/index.html\", import.meta.url);\n return c.html(html);\n});\n\n// Helper function to parse page ranges\nfunction parsePageRanges(pagesStr: string, totalPages: number): number[] {\n const pages: number[] = [];\n const ranges = pagesStr.split(',').map(s => s.trim());\n \n for (const range of ranges) {\n if (range.includes('-')) {\n const [start, end] = range.split('-').map(s => parseInt(s.trim()));\n if (isNaN(start) || isNaN(end) || start < 1 || end > totalPages || start > end) {\n throw new Error(`Invalid page range: ${range}`);\n }\n for (let i = start; i <= end; i++) {\n if (!pages.includes(i)) pages.push(i);\n }\n } else {\n const page = parseInt(range);\n if (isNaN(page) || page < 1 || page > totalPages) {\n throw new Error(`Invalid page number: ${range}`);\n }\n if (!pages.includes(page)) pages.push(page);\n }\n }\n \n return pages.sort((a, b) => a - b);\n}\n\n// 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