[eslint config] [*] [new] add whitespace entry point

Adds eslint config extends with only whitespace rules enabled

Merge pull request #1749 from airbnb/whitespace-rules

packages/eslint-config-airbnb-base/README.md

@@ -84,6 +84,10 @@ Lints ES5 and below. Requires `eslint` and `eslint-plugin-import`.
 
 See [Airbnb's overarching ESLint config](https://npmjs.com/eslint-config-airbnb), [Airbnb's Javascript styleguide](https://github.com/airbnb/javascript), and the [ESlint config docs](https://eslint.org/docs/user-guide/configuring#extending-configuration-files) for more information.
 
+### eslint-config-airbnb-base/whitespace
+
+This entry point that only warns on whitespace rules and sets all other rules to warnings. View the list of whitespace rules [here](https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb-base/whitespace.js).
+
 ## Improving this config
 
 Consider adding test cases if you're making complicated rules changes, like anything involving regexes. Perhaps in a distant future, we could use literate programming to structure our README as test cases for our .eslintrc?

packages/eslint-config-airbnb-base/package.json

@@ -66,6 +66,7 @@
     "node": ">= 4"
   },
   "dependencies": {
-    "eslint-restricted-globals": "^0.1.1"
+    "eslint-restricted-globals": "^0.1.1",
+    "object.entries": "^1.0.4"
   }
 }

packages/eslint-config-airbnb-base/whitespace.js

@@ -0,0 +1,73 @@
+const baseConfig = require('.');
+const entries = require('object.entries');
+const { CLIEngine } = require('eslint');
+
+function onlyErrorOnRules(rulesToError, config) {
+  const errorsOnly = { ...config };
+  const cli = new CLIEngine({ baseConfig: config, useEslintrc: false });
+  const baseRules = cli.getConfigForFile('./').rules;
+
+  entries(baseRules).forEach(([key, value]) => {
+    if (rulesToError.indexOf(key) === -1) {
+      if (Array.isArray(value)) {
+        errorsOnly.rules[key] = ['warn'].concat(value.slice(1));
+      } else if (typeof value === 'number') {
+        errorsOnly.rules[key] = 1;
+      } else {
+        errorsOnly.rules[key] = 'warn';
+      }
+    }
+  });
+
+  return errorsOnly;
+}
+
+module.exports = onlyErrorOnRules([
+  'array-bracket-newline',
+  'array-bracket-spacing',
+  'array-element-newline',
+  'arrow-spacing',
+  'block-spacing',
+  'comma-spacing',
+  'computed-property-spacing',
+  'dot-location',
+  'eol-last',
+  'func-call-spacing',
+  'function-paren-newline',
+  'generator-star-spacing',
+  'implicit-arrow-linebreak',
+  'indent',
+  'key-spacing',
+  'keyword-spacing',
+  'line-comment-position',
+  'linebreak-style',
+  'multiline-ternary',
+  'newline-per-chained-call',
+  'no-irregular-whitespace',
+  'no-mixed-spaces-and-tabs',
+  'no-multi-spaces',
+  'no-regex-spaces',
+  'no-spaced-func',
+  'no-trailing-spaces',
+  'no-whitespace-before-property',
+  'nonblock-statement-body-position',
+  'object-curly-newline',
+  'object-curly-spacing',
+  'object-property-newline',
+  'one-var-declaration-per-line',
+  'operator-linebreak',
+  'padded-blocks',
+  'padding-line-between-statements',
+  'rest-spread-spacing',
+  'semi-spacing',
+  'semi-style',
+  'space-before-blocks',
+  'space-before-function-paren',
+  'space-in-parens',
+  'space-infix-ops',
+  'space-unary-ops',
+  'spaced-comment',
+  'switch-colon-spacing',
+  'template-tag-spacing',
+  'import/newline-after-import',
+], baseConfig);

packages/eslint-config-airbnb/README.md

@@ -55,6 +55,10 @@ If you use yarn, run `npm info "eslint-config-airbnb@latest" peerDependencies` t
 
 2. Add `"extends": "airbnb"` to your .eslintrc
 
+### eslint-config-airbnb/whitespace
+
+This entry point that only warns on whitespace rules and sets all other rules to warnings. View the list of whitespace rules [here](https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb/whitespace.js).
+
 ### eslint-config-airbnb/base
 
 This entry point is deprecated. See [eslint-config-airbnb-base](https://npmjs.com/eslint-config-airbnb-base).

packages/eslint-config-airbnb/package.json

@@ -48,7 +48,8 @@
   },
   "homepage": "https://github.com/airbnb/javascript",
   "dependencies": {
-    "eslint-config-airbnb-base": "^12.1.0"
+    "eslint-config-airbnb-base": "^12.1.0",
+    "object.entries": "^1.0.4"
   },
   "devDependencies": {
     "babel-preset-airbnb": "^2.4.0",

packages/eslint-config-airbnb/whitespace.js

@@ -0,0 +1,87 @@
+const baseConfig = require('.');
+const entries = require('object.entries');
+const { CLIEngine } = require('eslint');
+
+function onlyErrorOnRules(rulesToError, config) {
+  const errorsOnly = { ...config };
+  const cli = new CLIEngine({ baseConfig: config, useEslintrc: false });
+  const baseRules = cli.getConfigForFile('./').rules;
+
+  entries(baseRules).forEach(([key, value]) => {
+    if (rulesToError.indexOf(key) === -1) {
+      if (Array.isArray(value)) {
+        errorsOnly.rules[key] = ['warn'].concat(value.slice(1));
+      } else if (typeof value === 'number') {
+        errorsOnly.rules[key] = 1;
+      } else {
+        errorsOnly.rules[key] = 'warn';
+      }
+    }
+  });
+
+  return errorsOnly;
+}
+
+module.exports = onlyErrorOnRules([
+  'array-bracket-newline',
+  'array-bracket-spacing',
+  'array-element-newline',
+  'arrow-spacing',
+  'block-spacing',
+  'comma-spacing',
+  'computed-property-spacing',
+  'dot-location',
+  'eol-last',
+  'func-call-spacing',
+  'function-paren-newline',
+  'generator-star-spacing',
+  'implicit-arrow-linebreak',
+  'indent',
+  'key-spacing',
+  'keyword-spacing',
+  'line-comment-position',
+  'linebreak-style',
+  'multiline-ternary',
+  'newline-per-chained-call',
+  'no-irregular-whitespace',
+  'no-mixed-spaces-and-tabs',
+  'no-multi-spaces',
+  'no-regex-spaces',
+  'no-spaced-func',
+  'no-trailing-spaces',
+  'no-whitespace-before-property',
+  'nonblock-statement-body-position',
+  'object-curly-newline',
+  'object-curly-spacing',
+  'object-property-newline',
+  'one-var-declaration-per-line',
+  'operator-linebreak',
+  'padded-blocks',
+  'padding-line-between-statements',
+  'rest-spread-spacing',
+  'semi-spacing',
+  'semi-style',
+  'space-before-blocks',
+  'space-before-function-paren',
+  'space-in-parens',
+  'space-infix-ops',
+  'space-unary-ops',
+  'spaced-comment',
+  'switch-colon-spacing',
+  'template-tag-spacing',
+  'import/newline-after-import',
+  // eslint-plugin-react rules
+  'react/jsx-child-element-spacing',
+  'react/jsx-closing-bracket-location',
+  'react/jsx-closing-tag-location',
+  'react/jsx-curly-spacing',
+  'react/jsx-equals-spacing',
+  'react/jsx-first-prop-newline',
+  'react/jsx-indent',
+  'react/jsx-indent-props',
+  'react/jsx-max-props-per-line',
+  'react/jsx-one-expression-per-line',
+  'react/jsx-space-before-closing',
+  'react/jsx-tag-spacing',
+  'react/jsx-wrap-multilines',
+], baseConfig);