import type { Cookie } from './cookie'; | |
/** | |
* A comparison function that can be used with {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort | Array.sort()}, | |
* which orders a list of cookies into the recommended order given in Step 2 of {@link https://www.rfc-editor.org/rfc/rfc6265.html#section-5.4 | RFC6265 - Section 5.4}. | |
* | |
* The sort algorithm is, in order of precedence: | |
* | |
* - Longest {@link Cookie.path} | |
* | |
* - Oldest {@link Cookie.creation} (which has a 1-ms precision, same as Date) | |
* | |
* - Lowest {@link Cookie.creationIndex} (to get beyond the 1-ms precision) | |
* | |
* @remarks | |
* ### RFC6265 - Section 5.4 - Step 2 | |
* | |
* The user agent SHOULD sort the cookie-list in the following order: | |
* | |
* - Cookies with longer paths are listed before cookies with shorter paths. | |
* | |
* - Among cookies that have equal-length path fields, cookies with | |
* earlier creation-times are listed before cookies with later | |
* creation-times. | |
* | |
* NOTE: Not all user agents sort the cookie-list in this order, but | |
* this order reflects common practice when this document was | |
* written, and, historically, there have been servers that | |
* (erroneously) depended on this order. | |
* | |
* ### Custom Store Implementors | |
* | |
* Since the JavaScript Date is limited to a 1-ms precision, cookies within the same millisecond are entirely possible. | |
* This is especially true when using the `now` option to `CookieJar.setCookie(...)`. The {@link Cookie.creationIndex} | |
* property is a per-process global counter, assigned during construction with `new Cookie()`, which preserves the spirit | |
* of the RFC sorting: older cookies go first. This works great for {@link MemoryCookieStore} since `Set-Cookie` headers | |
* are parsed in order, but is not so great for distributed systems. | |
* | |
* Sophisticated Stores may wish to set this to some other | |
* logical clock so that if cookies `A` and `B` are created in the same millisecond, but cookie `A` is created before | |
* cookie `B`, then `A.creationIndex < B.creationIndex`. | |
* | |
* @example | |
* ``` | |
* const cookies = [ | |
* new Cookie({ key: 'a', value: '' }), | |
* new Cookie({ key: 'b', value: '' }), | |
* new Cookie({ key: 'c', value: '', path: '/path' }), | |
* new Cookie({ key: 'd', value: '', path: '/path' }), | |
* ] | |
* cookies.sort(cookieCompare) | |
* // cookie sort order would be ['c', 'd', 'a', 'b'] | |
* ``` | |
* | |
* @param a - the first Cookie for comparison | |
* @param b - the second Cookie for comparison | |
* @public | |
*/ | |
export declare function cookieCompare(a: Cookie, b: Cookie): number; | |