We follow the [node.js release schedule](https://github.com/nodejs/Release#release-schedule) and support all versions that are in Active LTS or Maintenance. We will always do a major release when dropping support for older versions of node, and we will do so in consultation with our community.
Parse a cookie date string into a `Date`. Parses according to [RFC 6265 Section 5.1.1](https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.1), not `Date.parse()`.
Transforms a domain name into a canonical domain name. The canonical domain name is a domain name that has been trimmed, lowercased, stripped of leading dot, and optionally punycode-encoded ([Section 5.1.2 of RFC 6265](https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.2)). For the most part, this function is idempotent (calling the function with the output from a previous call returns the same output).
Answers "does this real domain match the domain in a cookie?". The `str` is the "current" domain name and the `domStr` is the "cookie" domain name. Matches according to [RFC 6265 Section 5.1.3](https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.3), but it helps to think of it as a "suffix match".
Given a current request/response path, gives the path appropriate for storing in a cookie. This is basically the "directory" of a "file" in the path, but is specified by [Section 5.1.4 of the RFC](https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.4).
The `path` parameter MUST be _only_ the pathname part of a URI (excluding the hostname, query, fragment, and so on). This is the `.pathname` property of node's `uri.parse()` output.
Answers "does the request-path path-match a given cookie-path?" as per [RFC 6265 Section 5.1.4](https://datatracker.ietf.org/doc/html/rfc6265#section-5.1.4). Returns a boolean.
Returns the public suffix of this hostname. The public suffix is the shortest domain name upon which a cookie can be set. Returns `null` if the hostname cannot have cookies set for it.
For further information, see the [Public Suffix List](http://publicsuffix.org/). This module derives its list from that site. This call is a wrapper around [`psl`](https://www.npmjs.com/package/psl)'s [`get` method](https://www.npmjs.com/package/psl##pslgetdomain).
For use with `.sort()`, sorts a list of cookies into the recommended order given in step 2 of ([RFC 6265 Section 5.4](https://datatracker.ietf.org/doc/html/rfc6265#section-5.4)). The sort algorithm is, in order of precedence:
> **Note**: 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 `.setCookie()`. The `.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 `MemoryCookieStore` since `Set-Cookie` headers are parsed in order, but is not so great for distributed systems. Sophisticated `Store`s 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`. If you want to alter the global counter, which you probably _shouldn't_ do, it's stored in `Cookie.cookiesCreated`.
If options is not an object it is ignored, which means it can be used with [`Array#map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map).
- _key_ - string - the name or key of the cookie (default `""`)
- _value_ - string - the value of the cookie (default `""`)
- _expires_ - `Date` - if set, the `Expires=` attribute of the cookie (defaults to the string `"Infinity"`). See `setExpires()`
- _maxAge_ - seconds - if set, the `Max-Age=` attribute _in seconds_ of the cookie. Can also be set to strings `"Infinity"` and `"-Infinity"` for non-expiry and immediate-expiry, respectively. See `setMaxAge()`
- _domain_ - string - the `Domain=` attribute of the cookie
- _path_ - string - the `Path=` of the cookie
- _secure_ - boolean - the `Secure` cookie flag
- _httpOnly_ - boolean - the `HttpOnly` cookie flag
- _sameSite_ - string - the `SameSite` cookie attribute (from [RFC 6265bis](#rfc-6265bis)); must be one of `none`, `lax`, or `strict`
- _extensions_ - `Array` - any unrecognized cookie attributes as strings (even if equal-signs inside)
- _creation_ - `Date` - when this cookie was constructed
- _creationIndex_ - number - set at construction, used to provide greater sort precision (see `cookieCompare(a,b)` for a full explanation)
- _hostOnly_ - boolean - is this a host-only cookie (that is, no Domain field was set, but was instead implied).
- _pathIsDefault_ - boolean - if true, there was no Path field on the cookie and `defaultPath()` was used to derive one.
- _creation_ - `Date` - **modified** from construction to when the cookie was added to the jar.
- _lastAccessed_ - `Date` - last time the cookie got accessed. Affects cookie cleaning after it is implemented. Using `cookiejar.getCookies(...)` updates this attribute.
Sets the expiry based on a date-string passed through `parseDate()`. If parseDate returns `null` (that is, can't parse this date string), `.expires` is set to `"Infinity"` (a string).
`expiryTime()` computes the absolute unix-epoch milliseconds that this cookie expires. `expiryDate()` works similarly, except it returns a `Date` object. Note that in both cases the `now` parameter should be milliseconds.
Max-Age takes precedence over Expires (as per the RFC). The `.creation` attribute -- or, by default, the `now` parameter -- is used to offset the `.maxAge` attribute.
If Expires (`.expires`) is set, that's returned.
Otherwise, `expiryTime()` returns `Infinity` and `expiryDate()` returns a `Date` object for "Tue, 19 Jan 2038 03:14:07 GMT" (latest date that can be expressed by a 32-bit `time_t`; the common limit for most user-agents).
`Infinity` is returned for cookies without an explicit expiry and `0` is returned if the cookie is expired. Otherwise a time-to-live in milliseconds is returned.
Returns the canonicalized `.domain` field. This is lower-cased and punycode ([RFC 3490](https://datatracker.ietf.org/doc/html/rfc3490)) encoded if the domain has any non-ASCII characters.
> **NOTE**: Custom `Cookie` properties are discarded. In tough-cookie 1.x, since there was no `.toJSON` method explicitly defined, all enumerable properties were captured. If you want a property to be serialized, add the property name to the `Cookie.serializableProperties` Array.
Any `Date` properties (such as `.expires`, `.creation`, and `.lastAccessed`) are parsed via [`Date.parse`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse), not tough-cookie's `parseDate`, since ISO timestamps are being handled at this layer.
Validates cookie attributes for semantic correctness. Useful for "lint" checking any Set-Cookie headers you generate. For now, it returns a boolean, but eventually could return a reason string. Future-proof with this construct:
Attempt to set the cookie in the cookie jar. The cookie has updated `.creation`, `.lastAccessed` and `.hostOnly` properties. And returns a promise if a callback is not provided.
- _http_ - boolean - default `true` - indicates if this is an HTTP or non-HTTP API. Affects `HttpOnly` cookies.
- _secure_ - boolean - autodetect from URL - indicates if this is a "Secure" API. If the currentUrl starts with `https:` or `wss:` this defaults to `true`, otherwise `false`.
- _now_ - Date - default `new Date()` - what to use for the creation or access time of cookies.
- _ignoreError_ - boolean - default `false` - silently ignore things like parse errors and invalid domains. `Store` errors aren't ignored by this option.
- _sameSiteContext_ - string - default unset - set to `'none'`, `'lax'`, or `'strict'` See [SameSite Cookies](#samesite-cookies) below.
As per the RFC, the `.hostOnly` property is set if there was no "Domain=" parameter in the cookie string (or `.domain` was null on the Cookie object). The `.domain` property is set to the fully-qualified hostname of `currentUrl` in this case. Matching this cookie requires an exact hostname match (not a `domainMatch` as per usual).
Synchronous version of [`setCookie`](#setcookiecookieorstring-currenturl-options-callbackerr-cookie); only works with synchronous stores (that is, the default `MemoryCookieStore`).
If an error is encountered it's passed as `err` to the callback, otherwise an array of `Cookie` objects is passed. The array is sorted with `cookieCompare()` unless the `{sort:false}` option is given.
- _http_ - boolean - default `true` - indicates if this is an HTTP or non-HTTP API. Affects `HttpOnly` cookies.
- _secure_ - boolean - autodetect from URL - indicates if this is a "Secure" API. If the currentUrl starts with `https:` or `wss:` then this is defaulted to `true`, otherwise `false`.
- _now_ - Date - default `new Date()` - what to use for the creation or access time of cookies
- _expire_ - boolean - default `true` - perform expiry-time checking of cookies and asynchronously remove expired cookies from the store. Using `false` returns expired cookies and does **not** remove them from the store (which is potentially useful for replaying Set-Cookie headers).
- _allPaths_ - boolean - default `false` - if `true`, do not scope cookies by path. The default uses RFC-compliant path scoping. **Note**: may not be supported by the underlying store (the default `MemoryCookieStore` supports it).
- _sameSiteContext_ - string - default unset - Set this to `'none'`, `'lax'`, or `'strict'` to enforce SameSite cookies upon retrieval. See [SameSite Cookies](#samesite-cookies) below.
- _sort_ - boolean - whether to sort the list of cookies.
Synchronous version of [`getCookies`](#getcookiescurrenturl-options-callbackerr-cookies); only works with synchronous stores (for example, the default `MemoryCookieStore`).
Accepts the same options as [`.getCookies()`](#getcookiescurrenturl-options-callbackerr-cookies) but returns a string suitable for a Cookie header rather than an Array.
Returns an array of strings suitable for **Set-Cookie** headers. Accepts the same options as [`.getCookies()`](#getcookiescurrenturl-options-callbackerr-cookies). Simply maps the cookie array via `.toString()`.
Synchronous version of [`getSetCookieStrings`](#getsetcookiestrings); only works with synchronous stores (for example, the default `MemoryCookieStore`).
> **NOTE**: Custom `Cookie` properties are discarded. If you want a property to be serialized, add the property name to the `Cookie.serializableProperties` Array.
Synchronous version of [`serialize`](#serializecallbackerr-serializedobject); only works with synchronous stores (for example, the default `MemoryCookieStore`).
A new Jar is created and the serialized Cookies are added to the underlying store. Each `Cookie` is added via `store.putCookie` in the order in which they appear in the serialization. A promise is returned if a callback is not provided.
Sync version of [`.deserialize`](#cookiejardeserializeserialized-store-callbackerr-object); only works with synchronous stores (for example, the default `MemoryCookieStore`).
Produces a deep clone of this jar. Modifications to the original do not affect the clone, and vice versa. Returns a promise if a callback is not provided.
The `store` argument is optional, but should be an instance of `Store`. By default, a new instance of `MemoryCookieStore` is created. Transferring between store types is supported so long as the source implements `.getAllCookies()` and the destination implements `.putCookie()`.
The `store` argument is optional, but must be a _synchronous_`Store` instance if specified. If not passed, a new instance of `MemoryCookieStore` is used.
The _source_ and _destination_ must both be synchronous `Store`s. If one or both stores are asynchronous, use `.clone` instead. Recall that `MemoryCookieStore` supports both synchronous and asynchronous API calls.
This is a new backwards-compatible feature of `tough-cookie` version 2.5, so not all Stores will implement it efficiently. For Stores that do not implement `removeAllCookies`, the fallback is to call `removeCookie` after `getAllCookies`. If `getAllCookies` fails or isn't implemented in the Store, that error is returned. If one or more of the `removeCookie` calls fail, only the first error is returned.
Sync version of [`.removeAllCookies()`](#removeallcookiescallbackerr); only works with synchronous stores (for example, the default `MemoryCookieStore`).
The storage model for each `CookieJar` instance can be replaced with a custom implementation. The default is `MemoryCookieStore` which can be found in [`lib/memstore.js`](https://github.com/salesforce/tough-cookie/blob/master/lib/memstore.js). The API uses continuation-passing-style to allow for asynchronous stores.
Retrieve a cookie with the given domain, path, and key (name). The RFC maintains that exactly one of these cookies should exist in a store. If the store is using versioning, this means that the latest or newest such cookie should be returned.
Locates cookies matching the given domain and path. This is most often called in the context of [`cookiejar.getCookies()`](#getcookiescurrenturl-options-callbackerr-cookies).
The resulting list is checked for applicability to the current request according to the RFC (domain-match, path-match, http-only-flag, secure-flag, expiry, and so on), so it's OK to use an optimistic search algorithm when implementing this method. However, the search algorithm used SHOULD try to find cookies that `domainMatch()` the domain and `pathMatch()` the path in order to limit the amount of checking that needs to be done.
As of version 0.9.12, the `allPaths` option to `cookiejar.getCookies()` above causes the path here to be `null`. If the path is `null`, path-matching MUST NOT be performed (that is, domain-matching only).
Adds a new cookie to the store. The implementation SHOULD replace any existing cookie with the same `.domain`, `.path`, and `.key` properties. Depending on the nature of the implementation, it's possible that between the call to `fetchCookie` and `putCookie` that a duplicate `putCookie` can occur.
Update an existing cookie. The implementation MUST update the `.value` for a cookie with the same `domain`, `.path`, and `.key`. The implementation SHOULD check that the old value in the store is equivalent to `oldCookie` - how the conflict is resolved is up to the store.
The `.lastAccessed` property is always different between the two objects (to the precision possible via JavaScript's clock). Both `.creation` and `.creationIndex` are guaranteed to be the same. Stores MAY ignore or defer the `.lastAccessed` change at the cost of affecting how cookies are selected for automatic deletion (for example, least-recently-used, which is up to the store to implement).
Stores may wish to optimize changing the `.value` of the cookie in the store versus storing a new cookie. If the implementation doesn't define this method, a stub that calls [`putCookie`](#storeputcookiecookie-callbackerr) is added to the store object.
_Optional_. Produces an `Array` of all cookies during [`jar.serialize()`](#serializecallbackerr-serializedobject). The items in the array can be true `Cookie` objects or generic `Object`s with the [Serialization Format](#serialization-format) data structure.
Cookies SHOULD be returned in creation order to preserve sorting via [`compareCookie()`](#cookiecomparea-b). For reference, `MemoryCookieStore` sorts by `.creationIndex` since it uses true `Cookie` objects internally. If you don't return the cookies in creation order, they'll still be sorted by creation time, but this only has a precision of 1-ms. See `cookieCompare` for more detail.
A just-in-memory CookieJar synchronous store implementation, used by default. Despite being a synchronous implementation, it's usable with both the synchronous and asynchronous forms of the `CookieJar` API. Supports serialization, `getAllCookies`, and `removeAllCookies`.
These are some Store implementations authored and maintained by the community. They aren't official and we don't vouch for them but you may be interested to have a look:
- [`db-cookie-store`](https://github.com/JSBizon/db-cookie-store): SQL including SQLite-based databases
- [`file-cookie-store`](https://github.com/JSBizon/file-cookie-store): Netscape cookie file format on disk
Support for RFC 6265bis revision 02 is being developed. Since this is a bit of an omnibus revision to the RFC 6252, support is broken up into the functional areas.
This change makes it so that if a cookie is sent from the server to the client with a `Secure` attribute, the channel must also be secure or the cookie is ignored.
This change makes it possible for servers, and supporting clients, to mitigate certain types of CSRF attacks by disallowing `SameSite` cookies from being sent cross-origin.
On the Cookie object itself, you can get or set the `.sameSite` attribute, which is serialized into the `SameSite=` cookie attribute. When unset or `undefined`, no `SameSite=` attribute is serialized. The valid values of this attribute are `'none'`, `'lax'`, or `'strict'`. Other values are serialized as-is.
When parsing cookies with a `SameSite` cookie attribute, values other than `'lax'` or `'strict'` are parsed as `'none'`. For example, `SomeCookie=SomeValue; SameSite=garbage` parses so that `cookie.sameSite === 'none'`.
In order to support SameSite cookies, you must provide a `sameSiteContext` option to _both_`setCookie` and `getCookies`. Valid values for this option are just like for the Cookie object, but have particular meanings:
1.`'strict'` mode - If the request is on the same "site for cookies" (see the RFC draft for more information), pass this option to add a layer of defense against CSRF.
2.`'lax'` mode - If the request is from another site, _but_ is directly because of navigation by the user, such as, `<link type=prefetch>` or `<a href="...">`, pass `sameSiteContext: 'lax'`.
4. unset/`undefined` - SameSite **is not** be enforced! This can be a valid use-case for when CSRF isn't in the threat model of the system being built.
It is highly recommended that you read RFC 6265bis for fine details on SameSite cookies. In particular [Section 8.8](https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-02##section-8.8) discusses security considerations and defense in depth.
Cookie prefixes are a way to indicate that a given cookie was set with a set of attributes simply by inspecting the first few characters of the cookie's name.
1.`"__Secure-" Prefix`: If a cookie's name begins with a case-sensitive match for the string "\_\_Secure-", then the cookie was set with a "Secure" attribute.
2.`"__Host-" Prefix`: If a cookie's name begins with a case-sensitive match for the string "\_\_Host-", then the cookie was set with a "Secure" attribute, a "Path" attribute with a value of "/", and no "Domain" attribute.
If `prefixSecurity` is enabled for `CookieJar`, then cookies that match the prefixes defined above but do not obey the attribute restrictions are not added.
