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* Constants for the asset caching module\n * This file contains all constant values used throughout the asset cache system\n */\n\n// ============================================================================\n// CACHE CONFIGURATION CONSTANTS\n// ============================================================================\n\n/**\n * Default cache name for the Cache Storage API\n */\nexport const DEFAULT_CACHE_NAME = \"asset-cache-v1\";\n\n/**\n * Default time to live for cached assets (in seconds)\n * 7 days\n */\nexport const DEFAULT_CACHE_TTL = 7 * 24 * 60 * 60;\n\n/**\n * Maximum size for cacheable assets (in bytes)\n * 50MB\n */\nexport const MAX_CACHEABLE_SIZE = 50 * 1024 * 1024;\n\n/**\n * Path to the cache manifest file\n */\nexport const CACHE_MANIFEST_PATH = \"/manifest.json\";\n\n// ============================================================================\n// SERVICE WORKER CONSTANTS\n// ============================================================================\n\n/**\n * Default service worker scope\n */\nexport const DEFAULT_SW_SCOPE = \"/\";\n\n// ============================================================================\n// CACHE STRATEGY MAPPINGS\n// ============================================================================\n\n/**\n * Asset types that should use a cache-first strategy\n * These are typically static assets that don't change frequently\n */\nexport const CACHE_FIRST_TYPES = [\n \"image/jpeg\",\n \"image/png\",\n \"image/webp\",\n \"image/gif\",\n \"image/svg+xml\",\n \"font/woff\",\n \"font/woff2\",\n \"font/ttf\",\n \"font/otf\",\n];\n\n/**\n * Asset types that should use a network-first strategy\n * These are typically large media files that benefit from fresh content\n */\nexport const NETWORK_FIRST_TYPES = [\n \"video/mp4\",\n \"video/webm\",\n \"audio/mpeg\",\n \"audio/ogg\",\n];\n\n/**\n * Asset types that should use a stale-while-revalidate strategy\n * These are assets that can be served stale while being updated in background\n */\nexport const STALE_WHILE_REVALIDATE_TYPES = [\n \"application/javascript\",\n \"text/css\",\n \"application/json\",\n];\n\n// ============================================================================\n// FILE TYPE MAPPINGS\n// ============================================================================\n\n/**\n * File extensions to MIME type mapping\n * Used to determine the correct content type for cached assets\n */\nexport const FILE_EXTENSION_TO_ASSET_TYPE: Record = {\n // Images\n jpg: \"image/jpeg\",\n jpeg: \"image/jpeg\",\n png: \"image/png\",\n gif: \"image/gif\",\n webp: \"image/webp\",\n svg: \"image/svg+xml\",\n ico: \"image/x-icon\",\n avif: \"image/avif\",\n bmp: \"image/bmp\",\n\n // Fonts\n woff: \"font/woff\",\n woff2: \"font/woff2\",\n ttf: \"font/ttf\",\n otf: \"font/otf\",\n eot: \"application/vnd.ms-fontobject\",\n\n // Videos\n mp4: 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AssetType.AUDIO;\n }\n\n return AssetType.OTHER;\n}\n\n/**\n * Check if an asset should be cached based on its type and size\n * @param url URL of the asset\n * @param size Size of the asset in bytes\n * @param contentType Optional content type\n * @param maxSize Maximum size for cacheable assets\n * @returns Whether the asset should be cached\n */\nexport function shouldCacheAsset(\n url: string,\n size: number,\n contentType?: string,\n maxSize = Infinity\n): boolean {\n // Don't cache assets that are too large\n if (size > maxSize) {\n return false;\n }\n\n // Don't cache assets from external domains unless explicitly allowed\n try {\n const urlObj = new URL(url, window.location.origin);\n if (urlObj.origin !== window.location.origin) {\n // Check if the domain is in the allowed list\n // This would be implemented based on your configuration\n // For now, we'll allow all domains\n // return isAllowedExternalDomain(urlObj.hostname);\n }\n } catch (error) {\n return false;\n }\n\n // 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