cf.d.ts

// TODO: add Response cf object too

declare class Request extends Body {
  readonly cf?: IncomingRequestCfProperties;
}

interface RequestInit {
  /**
   * cf is a union of these two types because there are multiple
   * scenarios in which it might be one or the other.
   *
   * IncomingRequestCfProperties is required to allow
   *   new Request(someUrl, event.request)
   *
   * RequestInitCfProperties is required to allow
   *   new Request(event.request, {cf: { ... } })
   *   fetch(someUrl, {cf: { ... } })
   */
  cf?: IncomingRequestCfProperties | RequestInitCfProperties;
}

interface CfRequestInit extends Omit<RequestInit, "cf"> {
  cf?: RequestInitCfProperties;
}

/**
 * Back compat support with older types.
 * @deprecated Use CfRequestInit instead.
 */
type CfRequestInitializerDict = CfRequestInit;

interface BasicImageTransformations {
  /**
   * Maximum width in image pixels. The value must be an integer.
   */
  width?: number;
  /**
   * Maximum height in image pixels. The value must be an integer.
   */
  height?: number;
  /**
   * Resizing mode as a string. It affects interpretation of width and height
   * options:
   *  - scale-down: Similar to contain, but the image is never enlarged. If
   *    the image is larger than given width or height, it will be resized.
   *    Otherwise its original size will be kept.
   *  - contain: Resizes to maximum size that fits within the given width and
   *    height. If only a single dimension is given (e.g. only width), the
   *    image will be shrunk or enlarged to exactly match that dimension.
   *    Aspect ratio is always preserved.
   *  - cover: Resizes (shrinks or enlarges) to fill the entire area of width
   *    and height. If the image has an aspect ratio different from the ratio
   *    of width and height, it will be cropped to fit.
   *  - crop: The image will be shrunk and cropped to fit within the area
   *    specified by width and height. The image will not be enlarged. For images
   *    smaller than the given dimensions it's the same as scale-down. For
   *    images larger than the given dimensions, it's the same as cover.
   *    See also trim.
   *  - pad: Resizes to the maximum size that fits within the given width and
   *    height, and then fills the remaining area with a background color
   *    (white by default). Use of this mode is not recommended, as the same
   *    effect can be more efficiently achieved with the contain mode and the
   *    CSS object-fit: contain property.
   */
  fit?: "scale-down" | "contain" | "cover" | "crop" | "pad";
  /**
   * When cropping with fit: "cover", this defines the side or point that should
   * be left uncropped. The value is either a string
   * "left", "right", "top", "bottom", "auto", or "center" (the default),
   * or an object {x, y} containing focal point coordinates in the original
   * image expressed as fractions ranging from 0.0 (top or left) to 1.0
   * (bottom or right), 0.5 being the center. {fit: "cover", gravity: "top"} will
   * crop bottom or left and right sides as necessary, but won’t crop anything
   * from the top. {fit: "cover", gravity: {x:0.5, y:0.2}} will crop each side to
   * preserve as much as possible around a point at 20% of the height of the
   * source image.
   */
  gravity?:
    | "left"
    | "right"
    | "top"
    | "bottom"
    | "center"
    | "auto"
    | BasicImageTransformationsGravityCoordinates;
  /**
   * Background color to add underneath the image. Applies only to images with
   * transparency (such as PNG). Accepts any CSS color (#RRGGBB, rgba(…),
   * hsl(…), etc.)
   */
  background?: string;
  /**
   * Number of degrees (90, 180, 270) to rotate the image by. width and height
   * options refer to axes after rotation.
   */
  rotate?: 0 | 90 | 180 | 270 | 360;
}

interface BasicImageTransformationsGravityCoordinates {
  x: number;
  y: number;
}

/**
 * In addition to the properties you can set in the RequestInit dict
 * that you pass as an argument to the Request constructor, you can
 * set certain properties of a `cf` object to control how Cloudflare
 * features are applied to that new Request.
 *
 * Note: Currently, these properties cannot be tested in the
 * playground.
 */
interface RequestInitCfProperties {
  cacheEverything?: boolean;
  /**
   * A request's cache key is what determines if two requests are
   * "the same" for caching purposes. If a request has the same cache key
   * as some previous request, then we can serve the same cached response for
   * both. (e.g. 'some-key')
   *
   * Only available for Enterprise customers.
   */
  cacheKey?: string;
  /**
   * This allows you to append additional Cache-Tag response headers
   * to the origin response without modifications to the origin server.
   * This will allow for greater control over the Purge by Cache Tag feature
   * utilizing changes only in the Workers process.
   *
   * Only available for Enterprise customers.
   */
  cacheTags?: string[];
  /**
   * Force response to be cached for a given number of seconds. (e.g. 300)
   */
  cacheTtl?: number;
  /**
   * Force response to be cached for a given number of seconds based on the Origin status code.
   * (e.g. { '200-299': 86400, '404': 1, '500-599': 0 })
   */
  cacheTtlByStatus?: Record<string, number>;
  scrapeShield?: boolean;
  apps?: boolean;
  image?: RequestInitCfPropertiesImage;
  minify?: RequestInitCfPropertiesImageMinify;
  mirage?: boolean;
  polish?: "lossy" | "lossless" | "off";
  /**
   * Redirects the request to an alternate origin server. You can use this,
   * for example, to implement load balancing across several origins.
   * (e.g.us-east.example.com)
   *
   * Note - For security reasons, the hostname set in resolveOverride must
   * be proxied on the same Cloudflare zone of the incoming request.
   * Otherwise, the setting is ignored. CNAME hosts are allowed, so to
   * resolve to a host under a different domain or a DNS only domain first
   * declare a CNAME record within your own zone’s DNS mapping to the
   * external hostname, set proxy on Cloudflare, then set resolveOverride
   * to point to that CNAME record.
   */
  resolveOverride?: string;
}

interface RequestInitCfPropertiesImageDraw extends BasicImageTransformations {
  /**
   * Absolute URL of the image file to use for the drawing. It can be any of
   * the supported file formats. For drawing of watermarks or non-rectangular
   * overlays we recommend using PNG or WebP images.
   */
  url: string;
  /**
   * Floating-point number between 0 (transparent) and 1 (opaque).
   * For example, opacity: 0.5 makes overlay semitransparent.
   */
  opacity?: number;
  /**
   * - If set to true, the overlay image will be tiled to cover the entire
   *   area. This is useful for stock-photo-like watermarks.
   * - If set to "x", the overlay image will be tiled horizontally only
   *   (form a line).
   * - If set to "y", the overlay image will be tiled vertically only
   *   (form a line).
   */
  repeat?: true | "x" | "y";
  /**
   * Position of the overlay image relative to a given edge. Each property is
   * an offset in pixels. 0 aligns exactly to the edge. For example, left: 10
   * positions left side of the overlay 10 pixels from the left edge of the
   * image it's drawn over. bottom: 0 aligns bottom of the overlay with bottom
   * of the background image.
   *
   * Setting both left & right, or both top & bottom is an error.
   *
   * If no position is specified, the image will be centered.
   */
  top?: number;
  left?: number;
  bottom?: number;
  right?: number;
}

interface RequestInitCfPropertiesImage extends BasicImageTransformations {
  /**
   * Device Pixel Ratio. Default 1. Multiplier for width/height that makes it
   * easier to specify higher-DPI sizes in <img srcset>.
   */
  dpr?: number;
  /**
   * An object with four properties {left, top, right, bottom} that specify
   * a number of pixels to cut off on each side. Allows removal of borders
   * or cutting out a specific fragment of an image. Trimming is performed
   * before resizing or rotation. Takes dpr into account.
   */
  trim?: {
    left?: number;
    top?: number;
    right?: number;
    bottom?: number;
  };
  /**
   * Quality setting from 1-100 (useful values are in 60-90 range). Lower values
   * make images look worse, but load faster. The default is 85. It applies only
   * to JPEG and WebP images. It doesn’t have any effect on PNG.
   */
  quality?: number;
  /**
   * Output format to generate. It can be:
   *  - avif: generate images in AVIF format.
   *  - webp: generate images in Google WebP format. Set quality to 100 to get
   *    the WebP-lossless format.
   *  - json: instead of generating an image, outputs information about the
   *    image, in JSON format. The JSON object will contain image size
   *    (before and after resizing), source image’s MIME type, file size, etc.
   */
  format?: "avif" | "webp" | "json";
  /**
   * Whether to preserve animation frames from input files. Default is true.
   * Setting it to false reduces animations to still images. This setting is
   * recommended when enlarging images or processing arbitrary user content,
   * because large GIF animations can weigh tens or even hundreds of megabytes.
   * It is also useful to set anim:false when using format:"json" to get the
   * response quicker without the number of frames.
   */
  anim?: boolean;
  /**
   * What EXIF data should be preserved in the output image. Note that EXIF
   * rotation and embedded color profiles are always applied ("baked in" into
   * the image), and aren't affected by this option. Note that if the Polish
   * feature is enabled, all metadata may have been removed already and this
   * option may have no effect.
   *  - keep: Preserve most of EXIF metadata, including GPS location if there's
   *    any.
   *  - copyright: Only keep the copyright tag, and discard everything else.
   *    This is the default behavior for JPEG files.
   *  - none: Discard all invisible EXIF metadata. Currently WebP and PNG
   *    output formats always discard metadata.
   */
  metadata?: "keep" | "copyright" | "none";
  /**
   * Strength of sharpening filter to apply to the image. Floating-point
   * number between 0 (no sharpening, default) and 10 (maximum). 1.0 is a
   * recommended value for downscaled images.
   */
  sharpen?: number;
  /**
   * Radius of a blur filter (approximate gaussian). Maximum supported radius
   * is 250.
   */
  blur?: number;
  /**
   * Overlays are drawn in the order they appear in the array (last array
   * entry is the topmost layer).
   */
  draw?: RequestInitCfPropertiesImageDraw[];
}

interface RequestInitCfPropertiesImageMinify {
  javascript?: boolean;
  css?: boolean;
  html?: boolean;
}

/**
 * In addition to the properties on the standard Request object,
 * the cf object contains extra information about the request provided
 * by Cloudflare's edge.
 *
 * Note: Currently, settings in the cf object cannot be accessed in the
 * playground.
 */
interface IncomingRequestCfProperties {
  /**
   * (e.g. 395747)
   */
  asn: number;
  /**
   * The organisation which owns the ASN of the incoming request.
   * (e.g. Google Cloud)
   */
  asOrganization: string;
  botManagement?: IncomingRequestCfPropertiesBotManagement;
  city?: string;
  clientAcceptEncoding?: string;
  clientTcpRtt: number;
  clientTrustScore?: number;
  /**
   * The three-letter airport code of the data center that the request
   * hit. (e.g. "DFW")
   */
  colo: string;
  continent?: string;
  /**
   * The two-letter country code in the request. This is the same value
   * as that provided in the CF-IPCountry header. (e.g. "US")
   */
  country: string;
  httpProtocol: string;
  latitude?: string;
  longitude?: string;
  /**
   * DMA metro code from which the request was issued, e.g. "635"
   */
  metroCode?: string;
  postalCode?: string;
  /**
   * e.g. "Texas"
   */
  region?: string;
  /**
   * e.g. "TX"
   */
  regionCode?: string;
  /**
   * e.g. "weight=256;exclusive=1"
   */
  requestPriority: string;
  /**
   * e.g. "America/Chicago"
   */
  timezone?: string;
  tlsVersion: string;
  tlsCipher: string;
  tlsClientAuth: IncomingRequestCfPropertiesTLSClientAuth;
}

interface IncomingRequestCfPropertiesBotManagement {
  score: number;
  staticResource: boolean;
  verifiedBot: boolean;
}

interface IncomingRequestCfPropertiesTLSClientAuth {
  certIssuerDNLegacy: string;
  certIssuerDN: string;
  certIssuerDNRFC2253: string;
  certIssuerSKI: string;
  certIssuerSerial: string;
  certPresented: "0" | "1";
  certSubjectDNLegacy: string;
  certSubjectDN: string;
  certSubjectDNRFC2253: string;
  /** In format "Dec 22 19:39:00 2018 GMT" */
  certNotBefore: string;
  /** In format "Dec 22 19:39:00 2018 GMT" */
  certNotAfter: string;
  certSerial: string;
  certFingerprintSHA1: string;
  /** "SUCCESS", "FAILED:reason", "NONE" */
  certVerified: string;
  certRevoked: string;
  certSKI: string;
}

export {};