packages/common - create, unify eslintrc, symlink

Creates a new packages/common/.eslintrc
and symlinks every other eslintrc from that place.

That way, we only have 1 copy of eslintrc instead of 5 almost identical ones.
(The only differences were whitespace differences, and mui- had an extra `arguments` in globals.)

Author: himdel

packages/common/.eslintrc

@@ -0,0 +1,100 @@
+{
+  "parser": "babel-eslint",
+  "parserOptions": {
+    "ecmaVersion": 6,
+    "sourceType": "module",
+    "ecmaFeatures": {
+      "jsx": true,
+      "modules": true,
+      "experimentalObjectRestSpread": true
+    }
+  },
+  "settings": {
+    "react": {
+      "version": 16.6
+    }
+  },
+  "globals": {
+    "beforeAll": true,
+    "describe": true,
+    "expect": true,
+    "it": true,
+    "arguments": true
+  },
+  "extends": ["react-app", "prettier", "eslint:recommended", "plugin:react/recommended"],
+  "env": {
+    "es6": true,
+    "browser": true,
+    "node": true,
+    "jest": true
+  },
+  "rules": {
+    "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
+    "react/display-name": "off",
+    "array-bracket-spacing": ["error", "always", {
+      "objectsInArrays": false
+    }],
+    "comma-dangle": [1, "always-multiline"],
+    "comma-spacing": ["error", {
+      "after": true
+    }],
+    "comma-style": "error",
+    "camelcase": "error",
+    "curly": ["error", "all"],
+    "eol-last": "error",
+    "eqeqeq": "error",
+    "indent": ["error", 2, {
+      "SwitchCase": 1,
+      "MemberExpression": 0,
+      "ImportDeclaration": 1,
+      "ObjectExpression": 1
+    }],
+    "react/jsx-curly-spacing": ["error", "always", {
+      "children": true,
+      "allowMultiline": false,
+      "spacing": {
+        "objectLiterals": "never"
+      }
+    }],
+    "key-spacing": "error",
+    "keyword-spacing": "error",
+    "linebreak-style": ["warn", "unix"],
+    "max-len": ["error", 150],
+    "new-cap": "error",
+    "no-bitwise": "error",
+    "no-caller": "error",
+    "no-console": "warn",
+    "no-mixed-spaces-and-tabs": "error",
+    "no-multiple-empty-lines": ["error", {
+      "max": 1
+    }],
+    "no-trailing-spaces": "error",
+    "no-use-before-define": ["error", {
+      "functions": false
+    }],
+    "no-undef": "error",
+    "no-var": "error",
+    "no-with": "error",
+    "object-shorthand": "error",
+    "object-curly-spacing": ["error", "always", {
+      "objectsInObjects": false,
+      "arraysInObjects": false
+    }],
+    "one-var": ["error", "never"],
+    "padding-line-between-statements": ["error", {
+      "blankLine": "always",
+      "prev": "block-like",
+      "next": "*"
+    }],
+    "quote-props": ["error", "as-needed"],
+    "quotes": ["error", "single", {
+      "allowTemplateLiterals": true
+    }],
+    "semi": ["error", "always"],
+    "space-in-parens": "error",
+    "space-infix-ops": "error",
+    "wrap-iife": "error",
+    "yoda": ["error", "never"],
+    "jsx-a11y/href-no-hash": "off"
+  }
+}

packages/mui-component-mapper/.eslintrc

@@ -0,0 +1 @@
+../common/.eslintrc

packages/mui-component-mapper/.eslintrc

@@ -0,0 +1 @@
+../common/.eslintrc