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2025-04-26 23:21:07 -07:00
/**
* Basic HTTP cookie parser and serializer for HTTP servers.
*/
/**
* Additional serialization options
*/
interface CookieSerializeOptions {
/**
* Specifies the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.3|Domain Set-Cookie attribute}. By default, no
* domain is set, and most clients will consider the cookie to apply to only
* the current domain.
*/
domain?: string | undefined;
/**
* Specifies a function that will be used to encode a cookie's value. Since
* value of a cookie has a limited character set (and must be a simple
* string), this function can be used to encode a value into a string suited
* for a cookie's value.
*
* The default function is the global `encodeURIComponent`, which will
* encode a JavaScript string into UTF-8 byte sequences and then URL-encode
* any that fall outside of the cookie range.
*/
encode?(value: string): string;
/**
* Specifies the `Date` object to be the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.1|`Expires` `Set-Cookie` attribute}. By default,
* no expiration is set, and most clients will consider this a "non-persistent cookie" and will delete
* it on a condition like exiting a web browser application.
*
* *Note* the {@link https://tools.ietf.org/html/rfc6265#section-5.3|cookie storage model specification}
* states that if both `expires` and `maxAge` are set, then `maxAge` takes precedence, but it is
* possible not all clients by obey this, so if both are set, they should
* point to the same date and time.
*/
expires?: Date | undefined;
/**
* Specifies the boolean value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.6|`HttpOnly` `Set-Cookie` attribute}.
* When truthy, the `HttpOnly` attribute is set, otherwise it is not. By
* default, the `HttpOnly` attribute is not set.
*
* *Note* be careful when setting this to true, as compliant clients will
* not allow client-side JavaScript to see the cookie in `document.cookie`.
*/
httpOnly?: boolean | undefined;
/**
* Specifies the number (in seconds) to be the value for the `Max-Age`
* `Set-Cookie` attribute. The given number will be converted to an integer
* by rounding down. By default, no maximum age is set.
*
* *Note* the {@link https://tools.ietf.org/html/rfc6265#section-5.3|cookie storage model specification}
* states that if both `expires` and `maxAge` are set, then `maxAge` takes precedence, but it is
* possible not all clients by obey this, so if both are set, they should
* point to the same date and time.
*/
maxAge?: number | undefined;
/**
* Specifies the value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.4|`Path` `Set-Cookie` attribute}.
* By default, the path is considered the "default path".
*/
path?: string | undefined;
/**
* Specifies the `string` to be the value for the [`Priority` `Set-Cookie` attribute][rfc-west-cookie-priority-00-4.1].
*
* - `'low'` will set the `Priority` attribute to `Low`.
* - `'medium'` will set the `Priority` attribute to `Medium`, the default priority when not set.
* - `'high'` will set the `Priority` attribute to `High`.
*
* More information about the different priority levels can be found in
* [the specification][rfc-west-cookie-priority-00-4.1].
*
* **note** This is an attribute that has not yet been fully standardized, and may change in the future.
* This also means many clients may ignore this attribute until they understand it.
*/
priority?: "low" | "medium" | "high" | undefined;
/**
* Specifies the boolean or string to be the value for the {@link https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-4.1.2.7|`SameSite` `Set-Cookie` attribute}.
*
* - `true` will set the `SameSite` attribute to `Strict` for strict same
* site enforcement.
* - `false` will not set the `SameSite` attribute.
* - `'lax'` will set the `SameSite` attribute to Lax for lax same site
* enforcement.
* - `'strict'` will set the `SameSite` attribute to Strict for strict same
* site enforcement.
* - `'none'` will set the SameSite attribute to None for an explicit
* cross-site cookie.
*
* More information about the different enforcement levels can be found in {@link https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-4.1.2.7|the specification}.
*
* *note* This is an attribute that has not yet been fully standardized, and may change in the future. This also means many clients may ignore this attribute until they understand it.
*/
sameSite?: true | false | "lax" | "strict" | "none" | undefined;
/**
* Specifies the boolean value for the {@link https://tools.ietf.org/html/rfc6265#section-5.2.5|`Secure` `Set-Cookie` attribute}. When truthy, the
* `Secure` attribute is set, otherwise it is not. By default, the `Secure` attribute is not set.
*
* *Note* be careful when setting this to `true`, as compliant clients will
* not send the cookie back to the server in the future if the browser does
* not have an HTTPS connection.
*/
secure?: boolean | undefined;
/**
* Specifies the `boolean` value for the [`Partitioned` `Set-Cookie`](https://datatracker.ietf.org/doc/html/draft-cutler-httpbis-partitioned-cookies#section-2.1)
* attribute. When truthy, the `Partitioned` attribute is set, otherwise it is not. By default, the
* `Partitioned` attribute is not set.
*
* **note** This is an attribute that has not yet been fully standardized, and may change in the future.
* This also means many clients may ignore this attribute until they understand it.
*
* More information can be found in the [proposal](https://github.com/privacycg/CHIPS).
*/
partitioned?: boolean;
}
/**
* Additional parsing options
*/
interface CookieParseOptions {
/**
* Specifies a function that will be used to decode a cookie's value. Since
* the value of a cookie has a limited character set (and must be a simple
* string), this function can be used to decode a previously-encoded cookie
* value into a JavaScript string or other object.
*
* The default function is the global `decodeURIComponent`, which will decode
* any URL-encoded sequences into their byte representations.
*
* *Note* if an error is thrown from this function, the original, non-decoded
* cookie value will be returned as the cookie's value.
*/
decode?(value: string): string;
/**
* Custom function to filter parsing specific keys.
*/
filter?(key: string): boolean;
}
/**
* Parse an HTTP Cookie header string and returning an object of all cookie
* name-value pairs.
*
* @param str the string representing a `Cookie` header value
* @param [options] object containing parsing options
*/
declare function parse(str: string, options?: CookieParseOptions): Record<string, string>;
/**
* Serialize a cookie name-value pair into a `Set-Cookie` header string.
*
* @param name the name for the cookie
* @param value value to set the cookie to
* @param [options] object containing serialization options
* @throws {TypeError} when `maxAge` options is invalid
*/
declare function serialize(name: string, value: string, options?: CookieSerializeOptions): string;
interface SetCookieParseOptions {
/**
* Custom decode function to use on cookie values.
*
* By default, `decodeURIComponent` is used.
*
* **Note:** If decoding fails, the original (undecoded) value will be used
*/
decode?: false | ((value: string) => string);
}
interface SetCookie {
/**
* Cookie name
*/
name: string;
/**
* Cookie value
*/
value: string;
/**
* Cookie path
*/
path?: string | undefined;
/**
* Absolute expiration date for the cookie
*/
expires?: Date | undefined;
/**
* Relative max age of the cookie in seconds from when the client receives it (integer or undefined)
*
* Note: when using with express's res.cookie() method, multiply maxAge by 1000 to convert to milliseconds
*/
maxAge?: number | undefined;
/**
* Domain for the cookie,
* May begin with "." to indicate the named domain or any subdomain of it
*/
domain?: string | undefined;
/**
* Indicates that this cookie should only be sent over HTTPs
*/
secure?: boolean | undefined;
/**
* Indicates that this cookie should not be accessible to client-side JavaScript
*/
httpOnly?: boolean | undefined;
/**
* Indicates a cookie ought not to be sent along with cross-site requests
*/
sameSite?: true | false | "lax" | "strict" | "none" | undefined;
[key: string]: unknown;
}
/**
* Parse a [Set-Cookie](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie) header string into an object.
*/
declare function parseSetCookie(setCookieValue: string, options?: SetCookieParseOptions): SetCookie;
/**
* Set-Cookie header field-values are sometimes comma joined in one string. This splits them without choking on commas
* that are within a single set-cookie field-value, such as in the Expires portion.
*
* See https://tools.ietf.org/html/rfc2616#section-4.2
*/
declare function splitSetCookieString(cookiesString: string | string[]): string[];
export { type CookieParseOptions, type CookieSerializeOptions, type SetCookie, type SetCookieParseOptions, parse, parseSetCookie, serialize, splitSetCookieString };