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So instead of\n// JSON.parse-ing the whole body, we locate the `const ASSETS = ` object\n// literal inside the source text and brace-match to pull out just the\n// JSON, then parse that substring.\n\nimport { Hono } from \"npm:hono@4\";\n\nconst ASSET_SOURCE_URL = \"https://files.catbox.moe/299e1b.txt\";\n\ntype AssetEntry = { t: string; g: boolean; b: string };\n\nlet cache: Record | null = null;\nlet cacheAt = 0;\nconst CACHE_TTL_MS = 5 * 60 * 1000; // re-fetch every 5 min in case the source is updated\n\nfunction extractAssetsJson(source: string): string {\n const marker = \"const ASSETS\";\n const markerIdx = source.indexOf(marker);\n if (markerIdx === -1) {\n throw new Error(\"Could not find 'const ASSETS' in source\");\n }\n const eqIdx = source.indexOf(\"=\", markerIdx);\n const braceStart = source.indexOf(\"{\", eqIdx);\n if (braceStart === -1) {\n throw new Error(\"Could not find opening brace after 'const ASSETS ='\");\n }\n\n // Brace-match from braceStart to find the matching closing brace,\n // respecting string literals so braces inside base64/text values\n // (there shouldn't be any here, but be safe) don't throw off the count.\n let depth = 0;\n let inString = false;\n let stringChar = \"\";\n let escaped = false;\n\n for (let i = braceStart; i < source.length; i++) {\n const ch = source[i];\n\n if (inString) {\n if (escaped) {\n escaped = false;\n } else if (ch === \"\\\\\") {\n escaped = true;\n } else if (ch === stringChar) {\n inString = false;\n }\n continue;\n }\n\n if (ch === '\"' || ch === \"'\") {\n inString = true;\n stringChar = ch;\n continue;\n }\n\n if (ch === \"{\") depth++;\n else if (ch === \"}\") {\n depth--;\n if (depth === 0) {\n return source.slice(braceStart, i + 1);\n }\n }\n }\n\n throw new Error(\"Unbalanced braces while extracting ASSETS object\");\n}\n\nasync function getAssets(): Promise> {\n const now = Date.now();\n if (cache && now - cacheAt < CACHE_TTL_MS) return cache;\n const res = await fetch(ASSET_SOURCE_URL);\n if (!res.ok) throw new Error(`Failed to fetch assets: ${res.status}`);\n const source = await res.text();\n const jsonSlice = extractAssetsJson(source);\n cache = JSON.parse(jsonSlice);\n cacheAt = now;\n return cache!;\n}\n\nfunction b64ToBytes(b64: string): Uint8Array {\n const bin = atob(b64);\n const bytes = new Uint8Array(bin.length);\n for (let i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);\n return bytes;\n}\n\nasync function gunzip(bytes: Uint8Array): Promise {\n const ds = new DecompressionStream(\"gzip\");\n const stream = new Blob([bytes]).stream().pipeThrough(ds);\n return new Uint8Array(await new Response(stream).arrayBuffer());\n}\n\nfunction cacheHeadersFor(path: string): Record {\n if (\n path === \"/index.html\" ||\n path === \"/\" ||\n path === \"/site.webmanifest\" ||\n path === \"/manifest.json\" ||\n path.endsWith(\".webmanifest\")\n ) {\n return { \"Cache-Control\": \"no-cache, must-revalidate\" };\n }\n return { \"Cache-Control\": \"public, max-age=31536000, immutable\" };\n}\n\nconst app = new Hono();\n\napp.get(\"/*\", async (c) => {\n let path = c.req.path;\n if (path === \"\" || path === \"/\") path = \"/index.html\";\n\n const assets = await getAssets();\n let entry = assets[path];\n\n if (!entry && !path.includes(\".\")) {\n entry = assets[\"/index.html\"];\n path = \"/index.html\";\n }\n\n if (!entry) return c.text(`Not found: ${path}`, 404);\n\n const packed = b64ToBytes(entry.b);\n const bytes = entry.g ? 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Diff · v4