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# Change Log

All notable changes to this project will be documented in this file.

## [4.1.6](https://github.com/stalniy/casl/compare/@casl/ability@4.1.5...@casl/ability@4.1.6) (2020-09-06)

### Bug Fixes

* **ability:** ensure default field matcher can match fields with partial patterns inside ([362f49f](https://github.com/stalniy/casl/commit/362f49fce07ceb08725f129ee4c7251d20fee9f2)), closes [#388](https://github.com/stalniy/casl/issues/388)
* **ability:** removes sift specific types from casl ([9f18b31](https://github.com/stalniy/casl/commit/9f18b31cfaf09d8b6471abcb5dea14873d184eb6))
* **angular:** fixes sourcemap generation for the code built by ngc ([7715263](https://github.com/stalniy/casl/commit/771526379ff8203170a433d71b68644a48ff44eb)), closes [#387](https://github.com/stalniy/casl/issues/387) [#382](https://github.com/stalniy/casl/issues/382)

## [4.1.5](https://github.com/stalniy/casl/compare/@casl/ability@4.1.4...@casl/ability@4.1.5) (2020-06-08)

### Bug Fixes

* **package:** makes sure the latest casl works with Angular 8.x ([91ee505](https://github.com/stalniy/casl/commit/91ee505f25b77c7ddf13a066d9d0c22f6d8d2f99)), closes [#337](https://github.com/stalniy/casl/issues/337)

## [4.1.4](https://github.com/stalniy/casl/compare/@casl/ability@4.1.3...@casl/ability@4.1.4) (2020-06-02)

### Bug Fixes

* **ability:** makes sure error for wrong `Ability` usage is thrown ([db62daf](https://github.com/stalniy/casl/commit/db62dafee3b9d1db08ab49edbcfe0209a34584ae)), closes [#334](https://github.com/stalniy/casl/issues/334)

## [4.1.3](https://github.com/stalniy/casl/compare/@casl/ability@4.1.2...@casl/ability@4.1.3) (2020-05-27)

### Bug Fixes

* **ability:** makes sure Ability notifies about edge cases: empty fields array and field level checks without fieldMatcher ([48a49ed](https://github.com/stalniy/casl/commit/48a49eddec46e3a9b56e06039762e18136e39ca4)), closes [#329](https://github.com/stalniy/casl/issues/329) [#330](https://github.com/stalniy/casl/issues/330) [#328](https://github.com/stalniy/casl/issues/328)

## [4.1.2](https://github.com/stalniy/casl/compare/@casl/ability@4.1.1...@casl/ability@4.1.2) (2020-05-27)

### Bug Fixes

* **ability:** throws error when trying to check permissions on field with unconfigured fieldMatcher option ([e5f2add](https://github.com/stalniy/casl/commit/e5f2add3358964bf8884489109c307eb13bfdfc4)), closes [#330](https://github.com/stalniy/casl/issues/330)

## [4.1.1](https://github.com/stalniy/casl/compare/@casl/ability@4.1.0...@casl/ability@4.1.1) (2020-05-25)

### Bug Fixes

* **README:** adds a note about js examples and link to TypeScript support ([bd9dc59](https://github.com/stalniy/casl/commit/bd9dc590536148611571cb1e0bbe5c06ff6d96fd)), closes [#305](https://github.com/stalniy/casl/issues/305)

# [4.1.0](https://github.com/stalniy/casl/compare/@casl/ability@4.0.8...@casl/ability@4.1.0) (2020-05-19)

### Bug Fixes

* **deps:** update dependency sift to v13 ([fa3eecc](https://github.com/stalniy/casl/commit/fa3eecc7bc01d3bcce4e99fc35bfc27a6cec2bcf))

### Features

* **error:** makes `ForbiddenError.ability` to be a readonly public prop ([3a0342d](https://github.com/stalniy/casl/commit/3a0342dbeae1a5719197acf5351bb11fda1789f1)), closes [#264](https://github.com/stalniy/casl/issues/264)

## [4.0.8](https://github.com/stalniy/casl/compare/@casl/ability@4.0.7...@casl/ability@4.0.8) (2020-04-29)

### Bug Fixes

* **dist:** ensure object spread operator is converted to `Object.assign` in ES6 build ([fefc955](https://github.com/stalniy/casl/commit/fefc95544f739f7f9d0c7ba0f8a295160cd5fc9d))

## [4.0.7](https://github.com/stalniy/casl/compare/@casl/ability@4.0.6...@casl/ability@4.0.7) (2020-04-22)

### Bug Fixes

* **alias:** simplifies types for expandActions ([395dde7](https://github.com/stalniy/casl/commit/395dde714bcce1522b9c706ed0941e21395d6673))

## [4.0.6](https://github.com/stalniy/casl/compare/@casl/ability@4.0.5...@casl/ability@4.0.6) (2020-04-20)

### Bug Fixes

* **can:** changes link in exception to new documentation ([c133d4e](https://github.com/stalniy/casl/commit/c133d4ebc7aaa6d63192cd9adc19a18d55d50713))

## [4.0.5](https://github.com/stalniy/casl/compare/@casl/ability@4.0.4...@casl/ability@4.0.5) (2020-04-17)

### Bug Fixes

* **ability:** relax types for MongoQueryOperators ([2960064](https://github.com/stalniy/casl/commit/296006458c11fdc75a72e7a2e0e074ff0e26eefa))

## [4.0.4](https://github.com/stalniy/casl/compare/@casl/ability@4.0.3...@casl/ability@4.0.4) (2020-04-11)

### Bug Fixes

* **README:** updates README to the latest version. makes sure all links are working ([839441c](https://github.com/stalniy/casl/commit/839441c59174010cf0b821c6995a9f227a261db7))

## [4.0.3](https://github.com/stalniy/casl/compare/@casl/ability@4.0.2...@casl/ability@4.0.3) (2020-04-10)

### Bug Fixes

* **ability:** reverts back `ability.rules` types to RawRule ([6d6b85f](https://github.com/stalniy/casl/commit/6d6b85f65527ca1543b856b68e12239be84ee3d3))

## [4.0.2](https://github.com/stalniy/casl/compare/@casl/ability@4.0.1...@casl/ability@4.0.2) (2020-04-10)

### Bug Fixes

* **ability:** improves inference of `abilities` by using virtual ts properties ([c134642](https://github.com/stalniy/casl/commit/c1346420235e7e76a2e3a1e5c8256ed253d78768))
* **packages:** makes eventual lib size to be smaller ([93a3bec](https://github.com/stalniy/casl/commit/93a3becdde7672bc1362ce11dac0d8247e583b9d)), closes [#287](https://github.com/stalniy/casl/issues/287)

## [4.0.1](https://github.com/stalniy/casl/compare/@casl/ability@4.0.0...@casl/ability@4.0.1) (2020-04-09)

### Bug Fixes

* **ability:** makes sure extra submodule is published ([096e4f7](https://github.com/stalniy/casl/commit/096e4f7a7edee9ce659f0243cc8c399326f542fd)), closes [#284](https://github.com/stalniy/casl/issues/284)

# [4.0.0](https://github.com/stalniy/casl/compare/@casl/ability@3.4.0...@casl/ability@4.0.0) (2020-04-09)

### Bug Fixes

* **ability:** ensures that `ForbiddenError` correctly inherits `Error` in ES5 ([12a74f2](https://github.com/stalniy/casl/commit/12a74f2d82397123d6220e374e134e402c67c94a)), closes [#248](https://github.com/stalniy/casl/issues/248)
* **ability:** extracts types to a separate file ([df1fec1](https://github.com/stalniy/casl/commit/df1fec1ea6b3af6fb5a0f1c5792ac990f4343abf)), closes [#248](https://github.com/stalniy/casl/issues/248)
* **ability:** improves PackedRule type ([a781921](https://github.com/stalniy/casl/commit/a781921ca7330d9858d93cb15457602a857dcb96)), closes [#248](https://github.com/stalniy/casl/issues/248)
* **ability:** makes sure `AbilityBuilder` correctly detects conditions ([1c35393](https://github.com/stalniy/casl/commit/1c353935dcf93ae506815828187867f69650edca)), closes [#248](https://github.com/stalniy/casl/issues/248)
* **deps:** update dependency sift to v12 ([71593ca](https://github.com/stalniy/casl/commit/71593cad97c7611ae9dfe8f1dfeb5483173bff2a))
* **mongoose:** ensures mongoose works with MongoQuery conditions ([f92b7df](https://github.com/stalniy/casl/commit/f92b7df532ecca24ee05d02cf9388b21f8d242fa)), closes [#249](https://github.com/stalniy/casl/issues/249)

### Features

* **ability:** adds `subject` helper which allows to define subject type for DTO ([834c24f](https://github.com/stalniy/casl/commit/834c24fa8014ee193caa260c97a29ed2edbb52df))
* **ability:** adds generic types to Ability and related types [skip ci] ([4e56fda](https://github.com/stalniy/casl/commit/4e56fdaf92baabcdfece758e7a6ca369176e7fee)), closes [#256](https://github.com/stalniy/casl/issues/256)
* **ability:** adds typescript support for checks only by action ([b652df1](https://github.com/stalniy/casl/commit/b652df1256bd66e1aa5d47f27b41fb0c527840d2)), closes [#107](https://github.com/stalniy/casl/issues/107)
* **ability:** allows to do fine grained config ([2b97c57](https://github.com/stalniy/casl/commit/2b97c579b5d0841b75ba28a0bf969247fdb54beb)), closes [#248](https://github.com/stalniy/casl/issues/248)
* **ability:** allows to pass `fieldMatcher` and `conditionsMatcher` ([d23af56](https://github.com/stalniy/casl/commit/d23af562376fd6d2389a7bfcdeb3b5140b682ec8)), closes [#258](https://github.com/stalniy/casl/issues/258)
* **ability:** allows to specify class as subject type ([9c6041a](https://github.com/stalniy/casl/commit/9c6041adbad9bcb2c5655ad9656b4a705ed88a79)), closes [#187](https://github.com/stalniy/casl/issues/187)
* **ability:** improves typing for `GetSubjectName` and adds default values for generics ([c089293](https://github.com/stalniy/casl/commit/c08929301a1b06880c054cbb2f21cda3725028a4)), closes [#256](https://github.com/stalniy/casl/issues/256)
* **ability:** makes aliasing to be tree-shakable and per `Ability` instance ([fc22d49](https://github.com/stalniy/casl/commit/fc22d49ae40c8fdd5606977bbd27d6a4325e9ef6)), closes [#248](https://github.com/stalniy/casl/issues/248)
* **ability:** removes deprecated methods ([7d26f56](https://github.com/stalniy/casl/commit/7d26f569f37254c7a21b0ce0fd96601ed0c6d8f0)), closes [#257](https://github.com/stalniy/casl/issues/257)
* **ability:** returns `all` for empty subjects ([f5d41e0](https://github.com/stalniy/casl/commit/f5d41e04dea9bf1baf1b9e1aac5b3264727296e7)), closes [#107](https://github.com/stalniy/casl/issues/107) [#256](https://github.com/stalniy/casl/issues/256)
* **ability:** split `Ability` into `PureAbility` (base class) and `Ability` (preconfigured PureAbility) ([9536205](https://github.com/stalniy/casl/commit/953620523359f1c90b13a46a5314b9c034e28ec8)), closes [#249](https://github.com/stalniy/casl/issues/249)

### BREAKING CHANGES

* **subjectName:** subject name now returns `all` for subjects which type cannot be determined
* **api:** removes deprecated methods:
  * `ability.throwUnlessCan` in favor of `ForbiddenError.from(ability).throwUnlessCan`
* **alias:** aliasing functionality was refactored to support tree-shaking and have per instance:

Before:

```js
  import { Ability } from '@casl/ability';

Ability.addAlias('modify', ['create', 'update']);
  const ability = new Ability([]);

ability.can('modify', 'Post');
  ```

After:

```js
  import { Ability, createAliasResolver } from '@casl/ability';

const resolveAction = createAliasResolver({
    modify: ['create', 'update']
  });

const ability = new Ability([], { resolveAction });

ability.can('modify', 'Post');
  ```

* **alias**: no more default aliases are shipped with `@casl/ability`. So, if you used `crud`, you need to add it yourself.

Before:

```js
  import { AbilityBuilder } from '@casl/ability';

const ability = AbilityBuilder.define((can) => {
    can("crud", "Post");
  });

ability.can("crud", "Post"); // true
  ```

After:

```js
  import { defineAbility, createAliasResolver } from '@casl/ability';

const resolveAction = createAliasResolver({
    crud: ['create', 'read', 'update', 'delete']
  });
  const ability = defineAbility({ resolveAction }, (can) => {
    can("crud", "Post");
  });

ability.can("crud", "Post"); // true
  ```

* **options**: no more possibility to pass custom `Rule` class (this was undocumented feature). Now you should use `conditionsMatcher` and `fieldMatcher` instead.

Before:

```js
  import { Ability, Rule } from '@casl/ability';
  import sift from 'sift';

class MyCustomRule extends Rule {
    constructor(...args) {
      super(...args);
      this._matches = sift(/* custom sift options */)
    }
  }

const ability = new Ability([], { RuleType: MySiftRule })
  ```

After:

Depending on the usecase you should use either `mongoConditionsMatcher` (to restrict rules) or `buildMongoQueryMatcher` to extend them. See docs for details:

```js
  import {
    Ability,
    AbilityBuilder,
    buildMongoQueryMatcher,
  } from '@casl/ability';
  import { $nor } from 'sift';

const conditionsMatcher = buildMongoQueryMatcher({ $nor });
  export default function defineAbilityFor(user) {
    const { can, build } = new AbilityBuilder(Ability);

can('read', 'Article', {
      $nor: [{ private: true }, { authorId: user.id }]
    });

return build({ conditionsMatcher });
  }
  ```
* **builder**: removes `AbilityBuilder.define` in favor of `defineAbility` and `AbilityBuilder.extract` in favor of `new AbilityBuilder()`

Before:

```js
  import { AbilityBuilder, Ability } from '@casl/ability';

const ability = AbilityBuilder.define((can, cannot) => {
    can('read', 'Post');
    cannot('delete', 'Post', { private: true });
  });

// or
  const { can, cannot, rules } = AbilityBuilder.extract();

can('read', 'Post');
  cannot('delete', 'Post', { private: true });

const ability = new Ability(rules);
  ```

After:

```js
  import { defineAbility, AbilityBuilder, Ability } from '@casl/ability';

const ability = defineAbility((can, cannot) => {
    can('read', 'Post');
    cannot('delete', 'Post', { private: true });
  });

// or
  const { can, cannot, rules } = new AbilityBuilder(Ability);

can('read', 'Post');
  cannot('delete', 'Post', { private: true });

const ability = new Ability(rules);
  ```

* **error**: `ForbiddenError` constructor now accepts `Ability` instance as a parameter. See API docs for details
* **Ability**: `emit`, `buildIndexFor`, `mergeRulesFor` are now private methods
* **rule**: deprecated use of `actions` in rules in favor of singular form `action`, however the 1st is still supported:

Before:

```js
  const rules = [
    { actions: 'read', subject: 'Post' }
  ];
  ```

After:

```js
  const rules = [
    { action: 'read', subject: 'Post' }
  ]
  ```
* **options:** `subjectName` option is renamed to `detectSubjectType`, however the 1st name is still supported for backward compatibility.
* **typescript:** weak hand written declaration files are removed as `@casl/ability` has been completely rewritten to TypeScript.

# [@casl/ability-v3.4.0](https://github.com/stalniy/casl/compare/@casl/ability@3.3.0...@casl/ability@3.4.0) (2019-12-22)

### Features

* **ability:** adds possibility to specify custom error messages ([#245](https://github.com/stalniy/casl/issues/245)) ([4b48562](https://github.com/stalniy/casl/commit/4b485620fabb290f0451bc2e828637eaec043c32)), closes [#241](https://github.com/stalniy/casl/issues/241)

# [@casl/ability-v3.3.0](https://github.com/stalniy/casl/compare/@casl/ability@3.2.0...@casl/ability@3.3.0) (2019-12-09)

### Bug Fixes

* **deps:** update dependency sift to v9 ([cf3aa9a](https://github.com/stalniy/casl/commit/cf3aa9a145947e091187bb970f8a3d3819537ce3))

### Features

* **ability:** uses CSP build of sift.js ([f238813](https://github.com/stalniy/casl/commit/f23881322b585b9487153295d355341968b349c5)), closes [#234](https://github.com/stalniy/casl/issues/234)

# [@casl/ability-v3.2.0](https://github.com/stalniy/casl/compare/@casl/ability@3.1.2...@casl/ability@3.2.0) (2019-07-28)

### Features

* **ability:** adds support for field patterns in rules ([#213](https://github.com/stalniy/casl/issues/213)) ([55ad2db](https://github.com/stalniy/casl/commit/55ad2db)), closes [#194](https://github.com/stalniy/casl/issues/194)

# [@casl/ability-v3.2.0](https://github.com/stalniy/casl/compare/@casl/ability@3.1.2...@casl/ability@3.2.0) (2019-07-28)

### Features

# [@casl/ability-v3.1.2](https://github.com/stalniy/casl/compare/@casl/ability@3.1.1...@casl/ability@3.1.2) (2019-07-08)

### Performance Improvements

* **ability:** checks for fields only if fields were specified in rules ([da013d4](https://github.com/stalniy/casl/commit/da013d4))

# [@casl/ability-v3.1.1](https://github.com/stalniy/casl/compare/@casl/ability@3.1.0...@casl/ability@3.1.1) (2019-07-04)

### Bug Fixes

* **extra:** fixes edge cases when building query to database ([#206](https://github.com/stalniy/casl/issues/206)) ([437d4e7](https://github.com/stalniy/casl/commit/437d4e7))

# [@casl/ability-v3.1.0](https://github.com/stalniy/casl/compare/@casl/ability@3.0.2...@casl/ability@3.1.0) (2019-07-01)

### Bug Fixes

* **extra:** add rulesToFields TS definition ([#205](https://github.com/stalniy/casl/issues/205)) ([b772ad6](https://github.com/stalniy/casl/commit/b772ad6))

### Features

* **ability:** adds validation of 3rd parameter to Ability.can ([9df032c](https://github.com/stalniy/casl/commit/9df032c)), closes [#192](https://github.com/stalniy/casl/issues/192)

# [@casl/ability-v3.0.2](https://github.com/stalniy/casl/compare/@casl/ability@3.0.1...@casl/ability@3.0.2) (2019-03-25)

### Bug Fixes

* **ability:** returns `null` from `rulesToQuery` if ability has only inverted rules ([744061c](https://github.com/stalniy/casl/commit/744061c)), closes [#170](https://github.com/stalniy/casl/issues/170)

# [@casl/ability-v3.0.1](https://github.com/stalniy/casl/compare/@casl/ability@3.0.0...@casl/ability@3.0.1) (2019-02-16)

### Bug Fixes

* **ability:** copies event listeners before calling them ([3148da1](https://github.com/stalniy/casl/commit/3148da1)), closes [#159](https://github.com/stalniy/casl/issues/159)

# [@casl/ability-v3.0.0](https://github.com/stalniy/casl/compare/@casl/ability@2.5.1...@casl/ability@3.0.0) (2019-02-04)

### Bug Fixes

* **ability:** prevent creation of `manage` alias ([4ca1268](https://github.com/stalniy/casl/commit/4ca1268)), closes [#119](https://github.com/stalniy/casl/issues/119)
* **ability:** updates ts definitions for `Ability` ([2c989b2](https://github.com/stalniy/casl/commit/2c989b2)), closes [#119](https://github.com/stalniy/casl/issues/119)

### Features

* **ability:** adds support for `manage` action ([d9ab56c](https://github.com/stalniy/casl/commit/d9ab56c)), closes [#119](https://github.com/stalniy/casl/issues/119)

### BREAKING CHANGES

* **ability:** `manage` is not anymore an alias for CRUD but represents any action.

Let's consider the next example:

```js
const ability = AbilityBuilder.define((can) => {
  can('manage', 'Post')
  can('read', 'User')
})
```

In @casl/ability@2.x the definition above produces the next results:

```js
ability.can('read', 'Post') // true
ability.can('publish', 'Post') // false, because `manage` is an alias for CRUD
```

In @casl/ability@3.x the results:

```js
ability.can('read', 'Post') // true
ability.can('publish', 'Post') // true, because `manage` represents any action
```

To migrate the code, just replace `manage` with `crud` and everything will work as previously.

* **ability:** prioritise rules with `all` subject in the same way as other rules

Let's consider the next example:

```js
const ability = AbilityBuilder.define((can) => {
  can('read', 'User', { id: 1 })
  cannot('read', 'all')
})
```

According to rule ordering `read all` rule must override `read User` rule but in @casl/ability@2.x there was a bug and this is not true:

```js
ability.can('read', 'User') // true
```

In @casl/ability@3.x this works as expected

```js
ability.can('read', 'User') // false
```

# [@casl/ability-v2.5.1](https://github.com/stalniy/casl/compare/@casl/ability@2.5.0...@casl/ability@2.5.1) (2018-11-11)

### Bug Fixes

* **ability:** adds `on` method into typescript defs ([86e35cc](https://github.com/stalniy/casl/commit/86e35cc))

# [@casl/ability-v2.5.0](https://github.com/stalniy/casl/compare/@casl/ability@2.4.2...@casl/ability@2.5.0) (2018-10-14)

### Bug Fixes

* **deps:** update dependency sift to v7 ([0c02695](https://github.com/stalniy/casl/commit/0c02695))
* **README:** changes links to [@casl](https://github.com/casl)/ability to point to npm package instead to git root [skip ci] ([a74086b](https://github.com/stalniy/casl/commit/a74086b)), closes [#102](https://github.com/stalniy/casl/issues/102)

<a name="@casl/ability-v2.4.2"></a>
# [@casl/ability-v2.4.2](https://github.com/stalniy/casl/compare/@casl/ability@2.4.1...@casl/ability@2.4.2) (2018-07-02)

### Bug Fixes

* **ability:** adds additional check to `rulesToFields` ([a6f4875](https://github.com/stalniy/casl/commit/a6f4875))

<a name="@casl/ability-v2.4.1"></a>
# [@casl/ability-v2.4.1](https://github.com/stalniy/casl/compare/@casl/ability@2.4.0...@casl/ability@2.4.1) (2018-07-02)

### Bug Fixes

* **package:** changes location of ES5M modules ([2b1ad4e](https://github.com/stalniy/casl/commit/2b1ad4e)), closes [#89](https://github.com/stalniy/casl/issues/89)

<a name="@casl/ability-v2.4.0"></a>
# [@casl/ability-v2.4.0](https://github.com/stalniy/casl/compare/@casl/ability@2.3.0...@casl/ability@2.4.0) (2018-07-02)

### Bug Fixes

* **deps:** update dependency sift to v6 ([791f78c](https://github.com/stalniy/casl/commit/791f78c))

### Features

* **ability:** adds `rulesToFields` method ([4bf9ddc](https://github.com/stalniy/casl/commit/4bf9ddc)), closes [#86](https://github.com/stalniy/casl/issues/86)

<a name="2.3.0"></a>
# [2.3.0](https://github.com/stalniy/casl/compare/@casl/ability@2.1.0...@casl/ability@2.3.0) (2018-05-09)

### Features

* **ability:** allows AbilityBuilder to accept the subject's Type ([#61](https://github.com/stalniy/casl/issues/61)) ([0de1bf0](https://github.com/stalniy/casl/commit/0de1bf0)), closes [#58](https://github.com/stalniy/casl/issues/58)

<a name="2.2.0"></a>
# [2.2.0](https://github.com/stalniy/casl/compare/@casl/ability@2.1.0...@casl/ability@2.2.0) (2018-05-04)

### Features

* **ability:** adds forbidden reasons ([1c01c42](https://github.com/stalniy/casl/commit/1c01c42)), closes [#45](https://github.com/stalniy/casl/issues/45)

<a name="2.1.0"></a>
# [2.1.0](https://github.com/stalniy/casl/compare/@casl/ability@2.0.3...@casl/ability@2.1.0) (2018-04-26)

### Features

* **ability:** adds alias `action` to `actions` Rule field ([88d82a8](https://github.com/stalniy/casl/commit/88d82a8))
* **ability:** adds pack/unpack rules methods ([c60ab5d](https://github.com/stalniy/casl/commit/c60ab5d)), closes [#44](https://github.com/stalniy/casl/issues/44)

<a name="2.0.3"></a>
## [2.0.3](https://github.com/stalniy/casl/compare/@casl/ability@2.0.2...@casl/ability@2.0.3) (2018-04-16)

### Bug Fixes

* **ability:** ignores inverted rule with conditions when checking subject type ([36916dc](https://github.com/stalniy/casl/commit/36916dc)), closes [#53](https://github.com/stalniy/casl/issues/53)

<a name="2.0.2"></a>
# [2.0.2](https://github.com/stalniy/casl/compare/@casl/ability@2.0.0...@casl/ability@2.0.2) (2018-04-03)

### Features

* **ability:** allows to pass subjects as comma separated items ([7612425](https://github.com/stalniy/casl/commit/7612425))
* **builder:** allows to pass async function in `AbilityBuilder.define` ([def07c7](https://github.com/stalniy/casl/commit/def07c7))

### Performance

* **ability:** improves performance of `permittedFieldsOf` helper function ([7612425](https://github.com/stalniy/casl/commit/7612425))

### Bug Fixes

* **builder:** returns RuleBuilder from AbilityBuilder#cannot ([def07c7](https://github.com/stalniy/casl/commit/def07c7))

<a name="2.0.0"></a>
# [2.0.0](https://github.com/stalniy/casl/compare/v1.1.0...@casl/ability@2.0.0) (2018-03-23)

### Features

* **ability:** implement per field rules support ([471358f](https://github.com/stalniy/casl/commit/471358f)), closes [#18](https://github.com/stalniy/casl/issues/18)
* **extra:** adds `permittedAttributesOf` ([3474fcc](https://github.com/stalniy/casl/commit/3474fcc)), closes [#18](https://github.com/stalniy/casl/issues/18)

### Breaking Changes

* **package:** casl was split into several packages available under `@casl` npm scope
* **ability:** subject specific rules now takes precedence over `all` rules
* **rulesToQuery:** moves `rulesToQuery` into submodule `@casl/ability/extra`
* **mongoose:** moves mongo related functions into separate `@casl/mongoose` package

### Migration Guide

1. CASL was split into several packages which are available under `@casl` scope.

`Ability` related functionality now is in `@casl/ability` package. `casl` package is deperecated now.

**Before**:

```js
import { AbilityBuilder } from 'casl'
```

**Now**:

```js
import { AbilityBuilder } from '@casl/ability'
```

2. Previously it was not possible to override `all` rule with subject specific inverted one. It was a bug and it's fixed.

**Before**:

```js
const ability = AbilityBuilder.define((can, cannot) => {
can('read', 'all')
cannot('read', 'Post')
})

ability.can('read', 'Post') // true
```

**Now**:

with the same setup

```js
ability.can('read', 'Post') // false
```

3. `rulesToQuery` was moved into submodule. And its signature was changed

**Before**:

```js
import { rulesToQuery } from 'casl'

rulesToQuery(ability.rulesFor('read', 'Post'), rule => ...)
```

**Now**:

```js
import { rulesToQuery } from '@casl/ability/extra'

rulesToQuery(ability, 'read', 'Post', rule => ...)
```

This allows to ensure that people use this function correctly (i.e, by passing only 1 pair or action-subject rules)

4. MongoDB integration was moved into [@casl/mongoose](/packages/casl-mongoose).

**Before**:

```js
import { toMongoQuery, mongoosePlugin } from 'casl'
```

**Now**:

```js
import { toMongoQuery, accessibleRecordsPlugin } from '@casl/mongoose'
```

<a name="1.1.0"></a>
# [1.1.0](https://github.com/stalniy/casl/compare/v1.0.6...v1.1.0) (2018-02-02)

### Bug Fixes

* **ability:** adds check when action is aliased to itself ([facbe10](https://github.com/stalniy/casl/commit/facbe10))

### Features

* **ability:** adds `on` method and trigger `update` event in `update` method ([a3af0ed](https://github.com/stalniy/casl/commit/a3af0ed))

<a name="1.0.6"></a>
## [1.0.6](https://github.com/stalniy/casl/compare/v1.0.5...v1.0.6) (2017-12-19)

### Bug Fixes

* **ts:** fixes return type of mongo related functions ([67e02bc](https://github.com/stalniy/casl/commit/67e02bc))

<a name="1.0.5"></a>
## [1.0.5](https://github.com/stalniy/casl/compare/v1.0.4...v1.0.5) (2017-12-19)

### Bug Fixes

* **ts:** adds conditions to typescript definitions ([a345da7](https://github.com/stalniy/casl/commit/a345da7))

<a name="1.0.4"></a>
## [1.0.4](https://github.com/stalniy/casl/compare/v1.0.3...v1.0.4) (2017-12-18)

### Bug Fixes

* **ability:** properly checks inverted rules when subject type is passed as string ([e6f69e8](https://github.com/stalniy/casl/commit/e6f69e8))

<a name="1.0.2"></a>
## [1.0.2](https://github.com/stalniy/casl/compare/v1.0.1...v1.0.2) (2017-08-02)

<a name="1.0.1"></a>
## [1.0.1](https://github.com/stalniy/casl/compare/v1.0.0...v1.0.1) (2017-08-02)

### Bug Fixes

* **ability:** passes original subject into `rulesFor` instead of parsed one ([0496053](https://github.com/stalniy/casl/commit/0496053))

### Features

* **typescript:** adds d.ts file ([9e73719](https://github.com/stalniy/casl/commit/9e73719)), closes [#7](https://github.com/stalniy/casl/issues/7)

<a name="1.0.0"></a>
# [1.0.0](https://github.com/stalniy/casl/compare/v0.3.4...v1.0.0) (2017-07-28)

### Documentation

* adds all required documentation and examples of integration for v1

<a name="0.3.4"></a>
## [0.3.4](https://github.com/stalniy/casl/compare/v0.3.0...v0.3.4) (2017-07-24)

### Bug Fixes

* **mongoose:** adds proper modelName detection for mongoose query ([0508400](https://github.com/stalniy/casl/commit/0508400))
* **query:** fixes detection of forbidden query ([7712eb2](https://github.com/stalniy/casl/commit/7712eb2))
* **query:** makes query to be empty if there is at least one rule without conditions ([d82c3fc](https://github.com/stalniy/casl/commit/d82c3fc))

<a name="0.3.0"></a>
# [0.3.0](https://github.com/stalniy/casl/compare/v0.2.4...v0.3.0) (2017-07-24)

### Features

* **ability:** adds support for $regex condition ([fc438a1](https://github.com/stalniy/casl/commit/fc438a1))

<a name="0.2.4"></a>
## [0.2.4](https://github.com/stalniy/casl/compare/v0.2.1...v0.2.4) (2017-07-24)

### Bug Fixes

* **error:** fixes ForbiddenError instanceof checks in umd build ([e0a910c](https://github.com/stalniy/casl/commit/e0a910c))

<a name="0.2.1"></a>
## [0.2.1](https://github.com/stalniy/casl/compare/v0.2.0...v0.2.1) (2017-07-20)

<a name="0.2.0"></a>
# 0.2.0 (2017-07-18)

### Features

* **casl:** first release ([8694688](https://github.com/stalniy/casl/commit/8694688))