HeaderNames
type HeaderNames = Autocomplete<  | "Accept"  | "Accept-CH"  | "Accept-Charset"  | "Accept-Encoding"  | "Accept-Language"  | "Accept-Patch"  | "Accept-Post"  | "Accept-Ranges"  | "Access-Control-Allow-Credentials"  | "Access-Control-Allow-Headers"  | "Access-Control-Allow-Methods"  | "Access-Control-Allow-Origin"  | "Access-Control-Expose-Headers"  | "Access-Control-Max-Age"  | "Access-Control-Request-Headers"  | "Access-Control-Request-Method"  | "Age"  | "Allow"  | "Alt-Svc"  | "Alt-Used"  | "Authorization"  | "Cache-Control"  | "Clear-Site-Data"  | "Connection"  | "Content-Disposition"  | "Content-Encoding"  | "Content-Language"  | "Content-Length"  | "Content-Location"  | "Content-Range"  | "Content-Security-Policy"  | "Content-Security-Policy-Report-Only"  | "Content-Type"  | "Cookie"  | "Cross-Origin-Embedder-Policy"  | "Cross-Origin-Opener-Policy"  | "Cross-Origin-Resource-Policy"  | "Date"  | "Device-Memory"  | "ETag"  | "Expect"  | "Expect-CT"  | "Expires"  | "Forwarded"  | "From"  | "Host"  | "If-Match"  | "If-Modified-Since"  | "If-None-Match"  | "If-Range"  | "If-Unmodified-Since"  | "Keep-Alive"  | "Last-Modified"  | "Link"  | "Location"  | "Max-Forwards"  | "Origin"  | "Permissions-Policy"  | "Priority"  | "Proxy-Authenticate"  | "Proxy-Authorization"  | "Range"  | "Referer"  | "Referrer-Policy"  | "Retry-After"  | "Sec-Fetch-Dest"  | "Sec-Fetch-Mode"  | "Sec-Fetch-Site"  | "Sec-Fetch-User"  | "Sec-Purpose"  | "Sec-WebSocket-Accept"  | "Server"  | "Server-Timing"  | "Service-Worker-Navigation-Preload"  | "Set-Cookie"  | "SourceMap"  | "Strict-Transport-Security"  | "TE"  | "Timing-Allow-Origin"  | "Trailer"  | "Transfer-Encoding"  | "Upgrade"  | "Upgrade-Insecure-Requests"  | "User-Agent"  | "Vary"  | "Via"  | "WWW-Authenticate"  | "X-Content-Type-Options"| "X-Frame-Options">;Defined in: node_modules/.pnpm/undici-types@7.14.0/node_modules/undici-types/header.d.ts:8