postcss-merge-rules - npm Package Compare versions

Comparing version 2.0.11 to 2.1.0

CHANGELOG.md

@@ -0,1 +1,10 @@
+# 2.1.0
+
+* Rules are now merged based on supported browsers, which uses `browserslist`
+  & `caniuse-api`. The browsers should be supplied by the standard means of
+  [configuring `browserslist`][browserslist], either using config files or
+  via environment variables.
+
+[browserslist]: https://github.com/ai/browserslist#config-file
+
 # 2.0.11
@@ -2,0 +11,0 @@

dist/index.js

@@ -7,2 +7,6 @@ 'use strict';
 
+var _browserslist = require('browserslist');
+
+var _browserslist2 = _interopRequireDefault(_browserslist);
+
 var _postcss = require('postcss');
@@ -20,6 +24,8 @@
 
+var _ensureCompatibility = require('./lib/ensureCompatibility');
+
+var _ensureCompatibility2 = _interopRequireDefault(_ensureCompatibility);
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
 
-var list = _postcss2.default.list;
-
 var prefixes = _vendors2.default.map(function (v) {
@@ -64,6 +70,12 @@ return '-' + v + '-';
 
-function canMerge(ruleA, ruleB) {
-    var a = list.comma(ruleA.selector);
-    var b = list.comma(ruleB.selector);
+function canMerge(ruleA, ruleB, browsers) {
+    var a = ruleA.selectors;
+    var b = ruleB.selectors;
 
+    var selectors = a.concat(b);
+
+    if (!(0, _ensureCompatibility2.default)(selectors, browsers)) {
+        return false;
+    }
+
     var parent = sameParent(ruleA, ruleB);
@@ -75,3 +87,3 @@ var name = ruleA.parent.name;
     }
-    return parent && (a.concat(b).every(noVendor) || sameVendor(a, b));
+    return parent && (selectors.every(noVendor) || sameVendor(a, b));
 }
@@ -209,3 +221,3 @@
 
-function selectorMerger() {
+function selectorMerger(browsers) {
     var cache = null;
@@ -215,3 +227,3 @@ return function (rule) {
         // safe to merge both declarations before continuing
-        if (!cache || !canMerge(rule, cache)) {
+        if (!cache || !canMerge(rule, cache, browsers)) {
             cache = rule;
@@ -260,6 +272,13 @@ return;
 exports.default = _postcss2.default.plugin('postcss-merge-rules', function () {
-    return function (css) {
-        return css.walkRules(selectorMerger());
+    return function (css, result) {
+        var opts = result.opts;
+
+        var browsers = (0, _browserslist2.default)(null, {
+            stats: opts && opts.stats,
+            path: opts && opts.from,
+            env: opts && opts.env
+        });
+        css.walkRules(selectorMerger(browsers));
     };
 });
 module.exports = exports['default'];

package.json

 {
   "name": "postcss-merge-rules",
-  "version": "2.0.11",
+  "version": "2.1.0",
   "description": "Merge CSS rules with PostCSS.",
@@ -34,2 +34,3 @@ "main": "dist/index.js",
     "babel-register": "^6.9.0",
+    "browserslist": "^1.5.2",
     "cross-env": "^2.0.1",
@@ -53,3 +54,5 @@ "del-cli": "^0.2.0",
   "dependencies": {
+    "caniuse-api": "^1.5.2",
     "postcss": "^5.0.4",
+    "postcss-selector-parser": "^2.2.2",
     "vendors": "^1.0.0"
@@ -66,3 +69,17 @@ },
     "instrument": false
+  },
+  "browserslist": {
+    "chrome58": [
+      "Chrome 58"
+    ],
+    "edge15": [
+      "Edge 15"
+    ],
+    "ie6": [
+      "IE 6"
+    ],
+    "ie7": [
+      "IE 7"
+    ]
   }
 }

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Improved metrics

Total package byte prevSize

22459

increased by32.09%

Number of package files

7

increased by16.67%

Lines of code

380

increased by48.44%

Worsened metrics

Dependency count

4

increased by100%

Dev dependency count

19

increased by5.56%

Dependency changes

• + Addedcaniuse-api@^1.5.2

• + Addedpostcss-selector-parser@^2.2.2

• + Addedbrowserslist@1.7.7(transitive)

• + Addedcaniuse-api@1.6.1(transitive)

• + Addedcaniuse-db@1.0.30001680(transitive)

• + Addedelectron-to-chromium@1.5.62(transitive)

• + Addedflatten@1.0.3(transitive)

• + Addedindexes-of@1.0.1(transitive)

• + Addedlodash.memoize@4.1.2(transitive)

• + Addedlodash.uniq@4.5.0(transitive)

• + Addedpostcss-selector-parser@2.2.3(transitive)

• + Addeduniq@1.0.1(transitive)