Function isChecksummed

middleware/static-asset-caching.js:12–21

(path)

// True if the URL is known to contain some pattern of a checksum that
// would make it intelligently different if its content has changed.
function isChecksummed(path) {
  if (path.startsWith('/assets/cb-')) return true
  if (path.startsWith('/_next/static')) {
    // E.g. /_next/static/chunks/0e226fb0-f47400d931ae7427.js
    if (/[a-f0-9]{16}/.test(path)) return true
    // E.g. /_next/static/NkhGE2zLVuDHVh7pXdtVC/_buildManifest.js
    if (/\/\w{21}\//.test(path)) return true
  }
  return false
}