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eslint-plugin-ramda

(★ 117)

:ram: ESLint rules for use with Ramda

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- always-simplification.js
- any-pass-simplification.js
- both-simplification.js
- complement-simplification.js
- compose-pipe-style.js
- compose-simplification.js
- cond-simplification.js
- either-simplification.js
- eq-by-simplification.js
- filter-simplification.js
- if-else-simplification.js
- map-simplification.js
- merge-simplification.js
- no-redundant-and.js
- no-redundant-not.js
- no-redundant-or.js
- pipe-simplification.js
- prefer-both-either.js
- prefer-complement.js
- prefer-ramda-boolean.js
- prop-satisfies-simplification.js
- reduce-simplification.js
- reject-simplification.js
- set-simplification.js
- unless-simplification.js
- when-simplification.js
- .eslintrc.json
- always-simplification.js
- any-pass-simplification.js
- both-simplification.js
- complement-simplification.js
- compose-pipe-style.js
- compose-simplification.js
- cond-simplification.js
- either-simplification.js
- eq-by-simplification.js
- filter-simplification.js
- if-else-simplification.js
- map-simplification.js
- merge-simplification.js
- no-redundant-and.js
- no-redundant-not.js
- no-redundant-or.js
- pipe-simplification.js
- prefer-both-either.js
- prefer-complement.js
- prefer-ramda-boolean.js
- prop-satisfies-simplification.js
- reduce-simplification.js
- reject-simplification.js
- set-simplification.js
- unless-simplification.js
- when-simplification.js
.eslintrc.json
.gitignore
.travis.yml
ast-helper.js
index.js
LICENSE
package.json
README.md

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# eslint-plugin-ramda

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ESLint rules for pragmatic Ramda usage, refactoring and simplification

## Installation

```
$ npm install --save-dev eslint eslint-plugin-ramda
```

## Usage

Configure it in `package.json`.

```json
{
  "name": "my-awesome-project",
  "eslintConfig": {
    "env": {
      "es6": true
    },
    "plugins": [
      "ramda"
    ],
    "rules": {
      "ramda/always-simplification": "error",
      "ramda/any-pass-simplification": "error",
      "ramda/both-simplification": "error",
      "ramda/complement-simplification": "error",
      "ramda/compose-pipe-style": "error",
      "ramda/compose-simplification": "error",
      "ramda/cond-simplification": "error",
      "ramda/either-simplification": "error",
      "ramda/eq-by-simplification": "error",
      "ramda/filter-simplification": "error",
      "ramda/if-else-simplification": "error",
      "ramda/map-simplification": "error",
      "ramda/merge-simplification": "error",
      "ramda/no-redundant-and": "error",
      "ramda/no-redundant-not": "error",
      "ramda/no-redundant-or": "error",
      "ramda/pipe-simplification": "error",
      "ramda/prefer-both-either": "error",
      "ramda/prefer-complement": "error",
      "ramda/prefer-ramda-boolean": "error",
      "ramda/prop-satisfies-simplification": "error",
      "ramda/reduce-simplification": "error",
      "ramda/reject-simplification": "error",
      "ramda/set-simplification": "error",
      "ramda/unless-simplification": "error",
      "ramda/when-simplification": "error"
    }
  }
}
```

## Rules

- `always-simplification` - Detects when `always` usage can be replaced by a Ramda function
- `any-pass-simplification` - Suggests simplifying list of negations in `anyPass` by single negation in `allPass`
- `both-simplification` - Suggests transforming negated `both` conditions on negated `either`
- `complement-simplification` - Forbids confusing `complement`, suggesting a better one
- `compose-pipe-style` - Enforces `compose` for single line expression and `pipe` for multiline
- `compose-simplification` - Detects when a function that has the same behavior already exists
- `cond-simplification` - Forbids using `cond` when `ifElse`, `either` or `both` fits
- `either-simplification` - Suggests transforming negated `either` conditions on negated `both`
- `eq-by-simplification` - Forbids `eqBy(prop(_))` and suggests `eqProps`
- `filter-simplification` - Forbids using negated `filter` and suggests `reject`
- `if-else-simplification` - Suggests `when` and `unless` when it is possible to replace
- `map-simplification` - Forbids `map(prop(_))` and suggests `pluck`
- `merge-simplification` - Forbids `merge` when `assoc` fits
- `no-redundant-and` - Forbids `and` with 2 parameters in favor of `&&`
- `no-redundant-not` - Forbids `not` with 1 parameter in favor of `!`
- `no-redundant-or` - Forbids `or` with 2 parameters in favor of `||`
- `pipe-simplification` - Detects when a function that has the same behavior already exists
- `prefer-both-either` - Enforces using `both`/`either` instead of `allPass`/`anyPass` with a list of only two predicates
- `prefer-complement` - Enforces using `complement` instead of compositions using `not`
- `prefer-ramda-boolean` - Enforces using `R.T` and `R.F` instead of explicit functions
- `prop-satisfies-simplification` - Detects when can replace `propSatisfies` by more simple functions
- `reduce-simplification` - Detects when can replace `reduce` by `sum` or `product`
- `reject-simplification` - Forbids using negated `reject` and suggests `filter`
- `set-simplification` - Forbids using `set` with `lensProp` in favor of `assoc`
- `unless-simplification` - Forbids using negated `unless` and suggests `when`
- `when-simplification` - Forbids using negated `when` and suggests `unless`

## Recommended configuration

This plugin exports a [`recommended` configuration](index.js) that enforces good practices.

To enable this configuration, use the `extends` property in your `package.json`.

```json
{
  "name": "my-awesome-project",
  "eslintConfig": {
    "plugins": [
      "ramda"
    ],
    "extends": "plugin:ramda/recommended"
  }
}
```

See [ESLint documentation](http://eslint.org/docs/user-guide/configuring#extending-configuration-files)
for more information about extending configuration files.

MIT © @haskellcamargo and @lo1tuma