0.8.0 - Add array-func plugin (#77)

Add `eslint-plugin-array-func` to provide rules for best practices with `.map().filter().reduce()` style operations.

Author: 0xCLARITY

CHANGELOG.md

@@ -9,6 +9,10 @@ See [Conventional Commits](https://conventionalcommits.org) for commit guideline
 
 ## [Unreleased]
 
+## 0.8.0 - June 23, 2020
+
+- Add `eslint-plugin-array-func` to provide rules for best practices with `.map().filter().reduce()` style operations.
+
 ## 0.7.2 - June 22, 2020
 
 - Upgrade `eslint` to `7.3.0`, and add two new rules:

index.js

@@ -26,6 +26,7 @@ module.exports = {
     './rules/tsdoc',
     './rules/node',
     './rules/import',
+    './rules/array-func',
     './rules/mocha',
     './rules/prettier',
   ].map(require.resolve),

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@xpring-eng/eslint-config-base",
-  "version": "0.7.2",
+  "version": "0.8.0",
   "description": "Xpring's base TS ESLint config, following our styleguide",
   "keywords": [
     "eslint",
@@ -31,6 +31,7 @@
     "@typescript-eslint/parser": "^3.4.0",
     "eslint": "^7.3.0",
     "eslint-find-rules": "^3.4.0",
+    "eslint-plugin-array-func": "^3.1.6",
     "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.21.1",
     "eslint-plugin-jsdoc": "^28.0.0",
@@ -45,6 +46,7 @@
     "@typescript-eslint/eslint-plugin": "^3.4.0",
     "@typescript-eslint/parser": "^3.4.0",
     "eslint": "^7.3.0",
+    "eslint-plugin-array-func": "^3.1.6",
     "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.21.1",
     "eslint-plugin-jsdoc": "^28.0.0",

package.json

@@ -0,0 +1,40 @@
+module.exports = {
+  env: {
+    node: true, // Enable node global variables & Node.js scoping
+    es2020: true, // Add all ECMAScript 2020 globals and automatically set the ecmaVersion parser option to ES2020
+  },
+  parserOptions: {
+    sourceType: 'module',
+  },
+
+  plugins: ['array-func'],
+
+  rules: {
+    // Prefer using the mapFn callback of Array.from over an immediate .map() call on the Array.from result.
+    // https://github.com/freaktechnik/eslint-plugin-array-func#from-map
+    'array-func/from-map': 'error',
+
+    // Avoid the this parameter when providing arrow function as callback in array functions.
+    // https://github.com/freaktechnik/eslint-plugin-array-func#no-unnecessary-this-arg
+    'array-func/no-unnecessary-this-arg': 'error',
+
+    // Use Array.from instead of [...iterable] for performance benefits.
+    // https://github.com/freaktechnik/eslint-plugin-array-func#prefer-array-from
+    'array-func/prefer-array-from': 'error',
+
+    // Avoid reversing the array and running a method on it
+    // if there is an equivalent of the method operating on the array from the other end.
+    // https://github.com/freaktechnik/eslint-plugin-array-func#avoid-reverse
+    'array-func/avoid-reverse': 'error',
+
+    // Use .flatMap() to flatten an array and map the values instead of using .flat().map().
+    // https://github.com/freaktechnik/eslint-plugin-array-func#prefer-flat-map
+    'array-func/prefer-flat-map': 'error',
+
+    // Use .flat() to flatten an array of arrays.
+    // https://github.com/freaktechnik/eslint-plugin-array-func#prefer-flat
+    'array-func/prefer-flat': 'error',
+  },
+
+  overrides: [],
+}