feat(babel): extract babel configs to a separate package

BREAKING CHANGE: babel and babel-module configs are now distributed with @anvilabs/eslint-config-babel

Author: yenbekbay

packages/eslint-config-babel/.npmignore

@@ -0,0 +1,2 @@
+/test/
+/*.log

packages/eslint-config-babel/README.md

@@ -0,0 +1,36 @@
+# @anvilabs/eslint-config-babel
+
+[![Version](https://img.shields.io/npm/v/@anvilabs/eslint-config-babel.svg)](http://npm.im/@anvilabs/eslint-config-babel)
+[![Dependency Status](https://david-dm.org/anvilabs/eslint-config/status.svg?path=packages/eslint-config-babel)](https://david-dm.org/anvilabs/eslint-config?path=packages/eslint-config-babel)
+[![devDependency Status](https://david-dm.org/anvilabs/eslint-config/dev-status.svg?path=packages/eslint-config-babel)](https://david-dm.org/anvilabs/eslint-config?path=packages/eslint-config-babel&type=dev)
+
+Anvilabs' ESLint config for our Babel codebases.
+
+## Usage
+
+This config relies dangerously on npm@3/yarn flatter tree for its dependencies (because of [eslint/issues/3458](https://github.com/eslint/eslint/issues/3458)), so installation may be as simple as: 
+
+```bash
+$ yarn add eslint prettier @anvilabs/eslint-config @anvilabs/eslint-config-babel --dev
+# or
+$ npm install eslint prettier @anvilabs/eslint-config @anvilabs/eslint-config-babel --save-dev
+```
+
+Then add the extends to your `.eslintrc.js`:
+
+```js
+module.exports = {
+  extends: ['@anvilabs/eslint-config', '@anvilabs/eslint-config-babel' /* and maybe '@anvilabs/eslint-config-babel/babel-module' */],
+  rules: {
+    // your overrides
+  },
+};
+```
+
+Additional configs include:
+
+- `'@anvilabs/eslint-config-babel/babel-module'` for usage with [babel-plugin-module-resolver](https://github.com/tleunen/babel-plugin-module-resolver)
+
+## License
+
+[MIT License](../../LICENSE) © Anvilabs LLC

packages/eslint-config/babel-module.js renamed to packages/eslint-config-babel/babel-module.js

@@ -0,0 +1,43 @@
+{
+  "name": "@anvilabs/eslint-config-babel",
+  "version": "0.0.0-development",
+  "description": "Anvilabs' ESLint config for our Babel codebases",
+  "keywords": [
+    "eslint",
+    "eslint config",
+    "config",
+    "anvilabs",
+    "styleguide"
+  ],
+  "repository": "anvilabs/eslint-config",
+  "homepage": "https://github.com/anvilabs/eslint-config#readme",
+  "bugs": {
+    "url": "https://github.com/anvilabs/eslint-config/issues"
+  },
+  "license": "MIT",
+  "author": {
+    "name": "Ayan Yenbekbay",
+    "email": "ayan.yenb@gmail.com",
+    "url": "https://yenbekbay.me"
+  },
+  "engines": {
+    "node": ">=6.0.0"
+  },
+  "main": "index.js",
+  "scripts": {
+    "find-new-rules:index": "eslint-find-rules --unused test/fixtures/index.js",
+    "find-new-rules": "run-p --silent find-new-rules:*",
+    "semantic-release": "semantic-release"
+  },
+  "release": {
+    "extends": "semantic-release-monorepo"
+  },
+  "peerDependencies": {
+    "@anvilabs/eslint-config": "*"
+  },
+  "dependencies": {
+    "babel-eslint": "^10.0.1",
+    "eslint-plugin-babel": "^5.3.0"
+  },
+  "devDependencies": {}
+}

packages/eslint-config/babel.js renamed to packages/eslint-config-babel/index.js

@@ -0,0 +1,3 @@
+module.exports = {
+  extends: ['@anvilabs/eslint-config', '../../index.js'],
+};

packages/eslint-config-babel/package.json

@@ -65,8 +65,6 @@ module.exports = {
 
 Available configs include:
 
-- `'@anvilabs/eslint-config/babel'` for usage with [babel transformations](https://github.com/babel/babel-eslint)
-- `'@anvilabs/eslint-config/babel-module'` for usage with [babel-plugin-module-resolver](https://github.com/tleunen/babel-plugin-module-resolver)
 - `'@anvilabs/eslint-config/jest'` for [Jest](https://facebook.github.io/jest/) related rules
 - `'@anvilabs/eslint-config/lodash'` for [Lodash](https://lodash.com/) related rules
 - `'@anvilabs/eslint-config/ramda'` for [Ramda](https://ramdajs.com/) related rules

packages/eslint-config-babel/test/fixtures/index.js

@@ -25,7 +25,6 @@
   },
   "main": "index.js",
   "scripts": {
-    "find-new-rules:babel": "eslint-find-rules --unused test/fixtures/babel.js",
     "find-new-rules:base": "eslint-find-rules --unused index.js",
     "find-new-rules:jest": "eslint-find-rules --unused test/fixtures/jest.js",
     "find-new-rules:lodash": "eslint-find-rules --unused test/fixtures/lodash.js",
@@ -41,11 +40,8 @@
     "prettier": ">= 0.11.0"
   },
   "dependencies": {
-    "babel-eslint": "^10.0.1",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-config-prettier": "^3.3.0",
-    "eslint-import-resolver-babel-module": "^4.0.0",
-    "eslint-plugin-babel": "^5.3.0",
     "eslint-plugin-eslint-comments": "^3.0.1",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-jest": "^22.1.2",