Merge 3d0b835 into c534817

.eslintrc

@@ -1,15 +1,9 @@
 {
+  "extends": ["airbnb-base/legacy", "prettier"],
   "env": {
     "node": true
   },
-  "extends": [
-    "airbnb-base/legacy"
-  ],
   "rules": {
-    "comma-dangle": [2, "never"],
-    "func-names": [2, "as-needed"],
-    "no-warning-comments": [2, { "terms": ["todo", "fixme"], "location": "anywhere" }],
-    "semi": [2, "never"]
+    "func-names": 0
   }
 }
-

.gitignore

@@ -3,3 +3,6 @@ node_modules
 npm-debug.log
 yarn-error.log
 package-lock.json
+
+# Coveralls coverage
+/coverage

.lintstagedrc

@@ -0,0 +1,7 @@
+{
+  "**/*.js": [
+    "prettier --write",
+    "git add",
+    "eslint"
+  ]
+}

.npmignore

@@ -0,0 +1,11 @@
+# Dotfiles
+.editorconfig
+.eslintrc
+.gitattributes
+.gitignore
+.lintstagedrc
+.prettierrc
+.travis.yml
+
+# Tests
+/test

.prettierrc

@@ -0,0 +1,7 @@
+{
+  "printWidth": 100,
+  "useTabs": false,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "semi": true
+}

.travis.yml

@@ -5,12 +5,16 @@ cache:
 notifications:
   email: false
 node_js:
-  - "4"
   - "6"
   - "8"
 jobs:
   include:
+    - stage: coverage
+      node_js: "8"
+      script:
+        - npm run test:coverage
     - stage: lint
       node_js: "8"
       script:
-        - npm run lint
+        - npm run lint:prettier
+        - npm run lint:js

lib/__snapshots__/index.test.js.snap

@@ -0,0 +1,125 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`stylelint-no-unsupported-browser-features ignore option should ignore a single property 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "invalidOptionWarnings": Array [],
+    "parseErrors": Array [],
+    "source": "<input css 5>",
+    "warnings": Array [],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features ignore option should ignore multiple properties 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "invalidOptionWarnings": Array [],
+    "parseErrors": Array [],
+    "source": "<input css 6>",
+    "warnings": Array [],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features multiple browsers should allow display:table for IE 8 and IE 9 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "invalidOptionWarnings": Array [],
+    "parseErrors": Array [],
+    "source": "<input css 3>",
+    "warnings": Array [],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features multiple browsers should disallow display:table for IE 6 and IE 7 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "errored": true,
+    "invalidOptionWarnings": Array [],
+    "parseErrors": Array [],
+    "source": "<input css 4>",
+    "warnings": Array [
+      Object {
+        "column": 7,
+        "line": 1,
+        "rule": "plugin/no-unsupported-browser-features",
+        "severity": "error",
+        "text": "Unexpected browser feature \\"css-table\\" is not supported by IE 6,7 (plugin/no-unsupported-browser-features)",
+      },
+    ],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features single browser should allow display:table for IE 8 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "invalidOptionWarnings": Array [],
+    "parseErrors": Array [],
+    "source": "<input css 1>",
+    "warnings": Array [],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features single browser should disallow display:table for IE 6 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "errored": true,
+    "invalidOptionWarnings": Array [],
+    "parseErrors": Array [],
+    "source": "<input css 2>",
+    "warnings": Array [
+      Object {
+        "column": 7,
+        "line": 1,
+        "rule": "plugin/no-unsupported-browser-features",
+        "severity": "error",
+        "text": "Unexpected browser feature \\"css-table\\" is not supported by IE 6 (plugin/no-unsupported-browser-features)",
+      },
+    ],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features validate options should validate the browsers option 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "errored": true,
+    "invalidOptionWarnings": Array [
+      Object {
+        "text": "Invalid value \\"1\\" for option \\"browsers\\" of rule \\"plugin/no-unsupported-browser-features\\"",
+      },
+    ],
+    "parseErrors": Array [],
+    "source": "<input css 7>",
+    "warnings": Array [],
+  },
+]
+`;
+
+exports[`stylelint-no-unsupported-browser-features validate options should validate the ignore option 1`] = `
+Array [
+  Object {
+    "deprecations": Array [],
+    "errored": true,
+    "invalidOptionWarnings": Array [
+      Object {
+        "text": "Invalid value \\"1\\" for option \\"ignore\\" of rule \\"plugin/no-unsupported-browser-features\\"",
+      },
+    ],
+    "parseErrors": Array [],
+    "source": "<input css 8>",
+    "warnings": Array [],
+  },
+]
+`;

lib/index.js

@@ -0,0 +1,98 @@
+var _ = require('lodash');
+var stylelint = require('stylelint');
+var doiuse = require('doiuse');
+var Result = require('postcss/lib/result');
+
+/**
+ * Plugin settings
+ */
+
+var ruleName = 'plugin/no-unsupported-browser-features';
+var messages = stylelint.utils.ruleMessages(ruleName, {
+  rejected: function rejectRule(details) {
+    return 'Unexpected browser feature ' + details;
+  }
+});
+
+/**
+ * The allowed options
+ */
+
+var optionsSchema = {
+  browsers: [_.isString],
+  ignore: [_.isString]
+};
+
+/**
+ * Utilities
+ */
+
+function cleanWarningText(warningText) {
+  // Get index of feature Id
+  var featureIdIndex = warningText.lastIndexOf('(');
+
+  // Get feature Id, then replace brackets with quotes
+  var featureId = warningText.slice(featureIdIndex, warningText.length).replace(/\(|\)/g, '"');
+
+  // Get start of support text i.e. "x not supported by...", or "y only partially supported by..."
+  var browserSupportStartIndex =
+    warningText.indexOf('not') !== -1 ? warningText.indexOf('not') : warningText.indexOf('only');
+
+  // Get browser support text, then strip brackets.
+  var browserSupport = warningText
+    .slice(browserSupportStartIndex, featureIdIndex - 1)
+    .replace(/\(|\)|:/g, '');
+
+  var cleanedWarningText = featureId + ' is ' + browserSupport;
+
+  return cleanedWarningText;
+}
+
+function parseOptions(options) {
+  var doiuseOptions = {};
+
+  if (options && options.browsers) {
+    doiuseOptions.browsers = options.browsers;
+  }
+
+  if (options && options.ignore) {
+    doiuseOptions.ignore = options.ignore;
+  }
+
+  return doiuseOptions;
+}
+
+/**
+ * The main plugin rule
+ */
+
+function ruleFunction(on, options) {
+  return function postCssPlugin(root, result) {
+    var validOptions = stylelint.utils.validateOptions(result, ruleName, {
+      actual: options,
+      possible: optionsSchema,
+      optional: true
+    });
+
+    var doiuseOptions = parseOptions(options);
+    var doiuseResult = new Result();
+
+    if (!validOptions) return;
+
+    doiuse(doiuseOptions).postcss(root, doiuseResult);
+    doiuseResult.warnings().forEach(function reportWarning(doiuseWarning) {
+      stylelint.utils.report({
+        ruleName: ruleName,
+        result: result,
+        message: messages.rejected(cleanWarningText(doiuseWarning.text)),
+        node: doiuseWarning.node,
+        line: doiuseWarning.line,
+        column: doiuseWarning.column
+      });
+    });
+  };
+}
+
+module.exports = stylelint.createPlugin(ruleName, ruleFunction);
+module.exports.ruleName = ruleName;
+module.exports.messages = messages;