reValuate/node_modules/@expo/image-utils/build/Cache.js.map

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filePath : readFileSync(filePath);\n  return crypto.createHash('sha256').update(contents).digest('hex');\n}\n\n// Create a hash key for caching the images between builds\nexport function createCacheKey(fileSource: string, properties: string[]): string {\n  const hash = calculateHash(fileSource);\n  return [hash].concat(properties).filter(Boolean).join('-');\n}\n\nexport async function createCacheKeyWithDirectoryAsync(\n  projectRoot: string,\n  type: string,\n  icon: ImageOptions\n): Promise<string> {\n  const cacheKey = `${type}-${createCacheKey(icon.src, [icon.resizeMode, icon.backgroundColor])}`;\n  if (!(cacheKey in cacheKeys)) {\n    cacheKeys[cacheKey] = await ensureCacheDirectory(projectRoot, type, cacheKey);\n  }\n\n  return cacheKey;\n}\n\nexport async function ensureCacheDirectory(\n  projectRoot: string,\n  type: string,\n  cacheKey: string\n): Promise<string> {\n  const cacheFolder = join(projectRoot, CACHE_LOCATION, type, cacheKey);\n  await ensureDir(cacheFolder);\n  return cacheFolder;\n}\n\nexport async function getImageFromCacheAsync(\n  fileName: string,\n  cacheKey: string\n): Promise<null | Buffer> {\n  try {\n    return await readFile(resolve(cacheKeys[cacheKey], fileName));\n  } catch {\n    return null;\n  }\n}\n\nexport async function cacheImageAsync(\n  fileName: string,\n  buffer: Buffer,\n  cacheKey: string\n): Promise<void> {\n  try {\n    await writeFile(resolve(cacheKeys[cacheKey], fileName), buffer);\n  } catch ({ message }) {\n    console.warn(`Error caching image: \"${fileName}\". ${message}`);\n  }\n}\n\nexport async function clearUnusedCachesAsync(projectRoot: string, type: string): Promise<void> {\n  // Clean up any old caches\n  const cacheFolder = join(projectRoot, CACHE_LOCATION, type);\n  await ensureDir(cacheFolder);\n  const currentCaches = readdirSync(cacheFolder);\n\n  if (!Array.isArray(currentCaches)) {\n    console.warn('Failed to read the icon cache');\n    return;\n  }\n  const deleteCachePromises: Promise<void>[] = [];\n  for (const cache of currentCaches) {\n    // skip hidden folders\n    if (cache.startsWith('.')) {\n      continue;\n    }\n\n    // delete\n    if (!(cache in cacheKeys)) {\n      deleteCachePromises.push(remove(join(cacheFolder, cache)));\n    }\n  }\n\n  await Promise.all(deleteCachePromises);\n}\n"]}