# Changelog

## 3.18.0 - 2019-05-05
### Added
- `featurePolicy` has 19 new features: `ambientLightSensor`, `documentDomain`, `documentWrite`, `encryptedMedia`, `fontDisplayLateSwap`, `layoutAnimations`, `legacyImageFormats`, `loadingFrameDefaultEager`, `oversizedImages`, `pictureInPicture`, `serial`, `syncScript`, `unoptimizedImages`, `unoptimizedLosslessImages`, `unoptimizedLossyImages`, `unsizedMedia`, `verticalScroll`, `wakeLock`, and `xr`

### Changed
- Updated `expect-ct` to v0.2.0
- Updated `feature-policy` to v0.3.0
- Updated `frameguard` to v3.1.0
- Updated `nocache` to v2.1.0

## 3.17.0 - 2019-05-03
### Added
- `referrerPolicy` now supports multiple values

### Changed
- Updated `referrerPolicy` to v1.2.0

## 3.16.0 - 2019-03-10
### Added
- Add email to `bugs` field in `package.json`

### Changed
- Updated `hsts` to v2.2.0
- Updated `ienoopen` to v1.1.0
- Changelog is now in the [Keep A Changelog](https://keepachangelog.com/) format
- Dropped support for Node <4. See [the commit](https://github.com/helmetjs/helmet/commit/a49cec3ca58cce484d2d05e1f908549caa92ed03) for more information
- Updated Adam Baldwin's contact information

### Deprecated
- `helmet.hsts`'s `setIf` option has been deprecated and will be removed in `hsts@3`. See [helmetjs/hsts#22](https://github.com/helmetjs/hsts/issues/22) for more
* The `includeSubdomains` option (with a lowercase `d`) has been deprecated and will be removed in `hsts@3`. Use the uppercase-D `includeSubDomains` option instead. See [helmetjs/hsts#21](https://github.com/helmetjs/hsts/issues/21) for more

## 3.15.1 - 2019-02-10
### Deprecated
- The `hpkp` middleware has been deprecated. If you still need to use this module, install the standalone `hpkp` module from npm. See [#180](https://github.com/helmetjs/helmet/issues/180) for more.

## 3.15.0 - 2018-11-07
### Added
- `helmet.featurePolicy` now supports four new features

## 3.14.0 - 2018-10-09
### Added
- `helmet.featurePolicy` middleware

## 3.13.0 - 2018-07-22
### Added
- `helmet.permittedCrossDomainPolicies` middleware

## 3.12.2 - 2018-07-20
### Fixed
- Removed `lodash.reduce` dependency from `csp`

## 3.12.1 - 2018-05-16
### Fixed
- `expectCt` should use comma instead of semicolon as delimiter

## 3.12.0 - 2018-03-02
### Added
- `xssFilter` now supports `reportUri` option

## 3.11.0 - 2018-02-09
### Added
- Main Helmet middleware is now named to help with debugging

## 3.10.0 - 2018-01-23
### Added
- `csp` now supports `prefix-src` directive

### Fixed
- `csp` no longer loads JSON files internally, helping some module bundlers
- `false` should be able to disable a CSP directive

## 3.9.0 - 2017-10-13
### Added
- `csp` now supports `strict-dynamic` value
- `csp` now supports `require-sri-for` directive

### Changed
- Removed `connect` dependency

## 3.8.2 - 2017-09-27
### Changed
- Updated `connect` dependency to latest

## 3.8.1 - 2017-07-28
### Fixed
- `csp` does not automatically set `report-to` when setting `report-uri`

## 3.8.0 - 2017-07-21
### Changed
- `hsts` no longer cares whether it's HTTPS and always sets the header

## 3.7.0 - 2017-07-21
### Added
- `csp` now supports `report-to` directive

### Changed
- Throw an error when used incorrectly
- Add a few documentation files to `npmignore`

## 3.6.1 - 2017-05-21
### Changed
- Bump `connect` version

## 3.6.0 - 2017-05-04
### Added
- `expectCt` middleware for setting the `Expect-CT` header

## 3.5.0 - 2017-03-06
### Added
- `csp` now supports the `worker-src` directive

## 3.4.1 - 2017-02-24
### Changed
- Bump `connect` version

## 3.4.0 - 2017-01-13
### Added
- `csp` now supports more `sandbox` directives

## 3.3.0 - 2016-12-31
### Added
- `referrerPolicy` allows `strict-origin` and `strict-origin-when-cross-origin` directives

### Changed
- Bump `connect` version

## 3.2.0 - 2016-12-22
### Added
- `csp` now allows `manifest-src` directive

## 3.1.0 - 2016-11-03
### Added
- `csp` now allows `frame-src` directive

## 3.0.0 - 2016-10-28
### Changed
- `csp` will check your directives for common mistakes and throw errors if it finds them. This can be disabled with `loose: true`.
- Empty arrays are no longer allowed in `csp`. For source lists (like `script-src` or `object-src`), use the standard `scriptSrc: ["'none'"]`. The `sandbox` directive can be `sandbox: true` to block everything.
- `false` can disable a CSP directive. For example, `scriptSrc: false` is the same as not specifying it.
- In CSP, `reportOnly: true` no longer requires a `report-uri` to be set.
- `hsts`'s `maxAge` now defaults to 180 days (instead of 1 day)
- `hsts`'s `maxAge` parameter is seconds, not milliseconds
- `hsts` includes subdomains by default
- `domain` parameter in `frameguard` cannot be empty

### Removed
- `noEtag` option no longer present in `noCache`
- iOS Chrome `connect-src` workaround in CSP module

## 2.3.0 - 2016-09-30
### Added
- `hpkp` middleware now supports the `includeSubDomains` property with a capital D

### Fixed
- `hpkp` was setting `includeSubdomains` instead of `includeSubDomains`

## 2.2.0 - 2016-09-16
### Added
- `referrerPolicy` middleware

## 2.1.3 - 2016-09-07
### Changed
- Top-level aliases (like `helmet.xssFilter`) are no longer dynamically required

## 2.1.2 - 2016-07-27
### Deprecated
- `nocache`'s `noEtag` option is now deprecated

### Fixed
- `csp` now better handles Firefox on mobile

## 2.1.1 - 2016-06-10
### Changed
- Remove several dependencies from `helmet-csp`

### Fixed
- `frameguard` had a documentation error about its default value
- `frameguard` docs in main Helmet readme said `frameguard`, not `helmet.frameguard`

## 2.1.0 - 2016-05-18
### Added
- `csp` lets you dynamically set `reportOnly`

## 2.0.0 - 2016-04-29
### Added
- Pass configuration to enable/disable default middlewares

### Changed
- `dnsPrefetchControl` middleware is now enabled by default

### Removed
- No more module aliases. There is now just one way to include each middleware
- `frameguard` can no longer be initialized with strings; you must use an object

### Fixed
- Make `hpkp` lowercase in documentation
- Update `hpkp` spec URL in readmes
- Update `frameguard` header name in readme

## 1.3.0 - 2016-03-01
### Added
- `hpkp` has a `setIf` option to conditionally set the header

## 1.2.0 - 2016-02-29
### Added
- `csp` now has a `browserSniff` option to disable all user-agent sniffing

### Changed
- `frameguard` can now be initialized with options
- Add `npmignore` file to speed up installs slightly

## 1.1.0 - 2016-01-12
### Added
- Code of conduct
- `dnsPrefetchControl` middleware

### Fixed
- `csp` readme had syntax errors

## 1.0.2 - 2016-01-08
### Fixed
- `csp` wouldn't recognize `IE Mobile` browsers
- `csp` had some errors in its readme
- Main readme had a syntax error

## 1.0.1 - 2015-12-19
### Fixed
- `csp` with no User Agent would cause errors

## 1.0.0 - 2015-12-18
### Added
- `csp` module supports dynamically-generated values

### Changed
- `csp` directives are now under the `directives` key
- `hpkp`'s `Report-Only` header is now opt-in, not opt-out
- Tweak readmes of every sub-repo

### Removed
- `crossdomain` middleware
- `csp` no longer throws errors when some directives aren't quoted (`'self'`, for example)
- `maxage` option in the `hpkp` middleware
- `safari5` option from `csp` module

### Fixed
- Old Firefox Content-Security-Policy behavior for `unsafe-inline` and `unsafe-eval`
- Dynamic `csp` policies is no longer recursive

## 0.15.0 - 2015-11-26
### Changed
- `hpkp` allows a `report-uri` without the `Report-Only` header

## 0.14.0 - 2015-11-01
### Added
- `nocache` now sends the `Surrogate-Control` header

### Changed
- `nocache` no longer contains the `private` directive in the `Cache-Control` header

## 0.13.0 - 2015-10-23
### Added
- `xssFilter` now has a function name
- Added new CSP docs to readme

### Changed
- HSTS option renamed from `includeSubdomains` to `includeSubDomains`

## 0.11.0 - 2015-09-18
### Added
- `csp` now supports Microsoft Edge
- CSP Level 2 support

### Changed
- Updated `connect` to 3.4.0
- Updated `depd` to 1.1.0

### Fixed
- Added `license` key to `csp`'s `package.json`
- Empty `csp` directives now support every directive, not just `sandbox`

## 0.10.0 - 2015-07-08
### Added
- Add "Handling CSP violations" to `csp` readme
- Add license to `package.json`

### Changed
- `hpkp` had a link to the wrong place in its readme
- `hpkp` requires 2 or more pins

### Fixed
- `hpkp` might have miscalculated `maxAge` slightly wrong

## 0.9.0 - 2015-04-24
### Changed
- `nocache` adds `private` to its `Cache-Control` directive
- Added a description to `package.json`

## 0.8.0 - 2015-04-21
### Changed
- Removed hefty Lodash dependency from HSTS and CSP
- Updated string detection module in Frameguard
- Changed readme slightly to better reflect project's focus

### Deprecated
- Deprecated `crossdomain` middleware

### Removed
- `crossdomain` is no longer a default middleware

## 0.7.1 - 2015-03-23
### Changed
- Updated all outdated dependencies (insofar as possible)
- HSTS now uses Lodash like all the rest of the libraries

## 0.7.0 - 2015-03-05
### Added
- `hpkp` middleware

### Changed
- Travis CI should test 0.10 and 0.12
- Minor code cleanup

## 0.6.2 - 2015-03-01
### Changed
- Improved `xssFilter` performance
- Updated Lodash versions

## 0.6.1 - 2015-02-13
### Added
- "Other recommended modules" in README

### Changed
- Updated Lodash version

### Fixed
- `frameguard` middleware exported a function called `xframe`

## 0.6.0 - 2015-01-21
### Added
- You can disable `csp` for Android

### Fixed
- `csp` on Chrome Mobile on Android and iOS

## 0.5.4 - 2014-12-21
### Changed
- `nocache` should force revalidation

## 0.5.3 - 2014-12-08
### Changed
- `platform` version in CSP and X-XSS-Protection

### Fixed
- Updated bad wording in frameguard docs

## 0.5.2 - 2014-11-16
### Changed
- Updated Connect version

### Fixed
- Fixed minor `csp` bugfixes

## 0.5.1 - 2014-11-09
### Changed
- Updated URLs in `package.json` for new URL

### Fixed
- CSP would set all headers forever after receiving an unknown user agent

## 0.5.0 - 2014-10-28
### Added
- Most middlewares have some aliases now

### Changed
- `xframe` now called `frameguard` (though `xframe` still works)
- `frameguard` chooses sameorigin by default
- `frameguard` understands "SAME-ORIGIN" in addition to "SAMEORIGIN"
- `nocache` removed from default middleware stack
- Middleware split out into their own modules
- Documentation
- Updated supported Node version to at least 0.10.0
- Bumped Connect version

### Removed
- Deprecation warnings

### Fixed
- Readme link was broken

## 0.4.2 - 2014-10-16
### Added
- Support preload in HSTS header

## 0.4.1 - 2014-08-24
### Added
- Use [helmet-crossdomain](https://github.com/helmetjs/crossdomain) to test the waters
- 2 spaces instead of 4 throughout the code

## 0.4.0 - 2014-07-17
### Added
- `nocache` now sets the Expires and Pragma headers
- `nocache` now allows you to crush ETags

### Changed
- Improved the docs for nosniff
- Reverted HSTS behavior of requiring a specified max-age

### Fixed
- Allow HSTS to have a max-age of 0

## 0.3.2 - 2014-06-30
### Added
- All middleware functions are named
- Throw error with non-positive HSTS max-age

### Changed
- Added semicolons in README
- Make some Errors more specific

### Removed
- Removed all comment headers; refer to the readme

### Fixed
- `helmet()` was having issues
- Fixed Syntax errors in README

This changelog was created after the release of 0.3.1.
