browserslist - npm Package Compare versions

Comparing version 1.1.3 to 1.2.0

CHANGELOG.md

@@ -0,1 +1,7 @@
+## 1.2
+* Add `browserslist.coverage()` method.
+* Add `--coverage` and `-c` argument to CLI.
+* Add `-v` argument support to CLI.
+* Better error handling in CLI.
+
 ## 1.1.3
@@ -2,0 +8,0 @@ * Fix jspm support (by Sean Anderson).

cli.js

@@ -11,2 +11,19 @@ #!/usr/bin/env node
 
+function error(msg) {
+    process.stderr.write(pkg.name + ': ' + msg + '\n');
+    process.exit(1);
+}
+
+function query(queries) {
+    try {
+        return browserslist(queries);
+    } catch (e) {
+        if ( e.name === 'BrowserslistError' ) {
+            return error(e.message);
+        } else {
+            throw e;
+        }
+    }
+}
+
 if ( args.length === 0 || isArg('--help') || isArg('-h') ) {
@@ -16,21 +33,30 @@ process.stdout.write([
         '',
-        'Usage: ' + pkg.name + ' "QUERIES"'
+        'Usage:',
+        '  ' + pkg.name + ' "QUERIES"',
+        '  ' + pkg.name + ' --coverage "QUERIES"'
     ].join('\n') + '\n');
 
-} else if ( isArg('--version') ) {
+} else if ( isArg('--version') || isArg('-v') ) {
     process.stdout.write(pkg.name + ' ' + pkg.version + '\n');
 
+} else if ( isArg('--version') || isArg('-v') ) {
+    process.stdout.write(pkg.name + ' ' + pkg.version + '\n');
+
+} else if ( isArg('--coverage') || isArg('-c') ) {
+    var browsers = args.find(function (i) {
+        return i[0] !== '-';
+    });
+    if ( !browsers ) error('Define a browsers query to get coverage');
+    var result = browserslist.coverage(query(browsers));
+    var round  = Math.round(result * 100) / 100.0;
+    process.stdout.write(
+        'These browsers account for ' + round + '% of all users globally\n');
+
+} else if ( args.length === 1 && args[0][0] !== '-' ) {
+    query(args[0]).forEach(function (browser) {
+        process.stdout.write(browser + '\n');
+    });
+
 } else {
-    try {
-        browserslist(args[0]).forEach(function (browser) {
-            process.stdout.write(browser + '\n');
-        });
-    } catch (e) {
-        if ( e.name === 'BrowserslistError' ) {
-            process.stderr.write(pkg.name + ': ' + e.message + '\n');
-            process.exit(1);
-        } else {
-            throw e;
-        }
-    }
+    error('Unknown arguments. Use --help to pick right one.');
 }

index.js

@@ -149,4 +149,3 @@ var caniuse = require('caniuse-db/data.json').agents;
     } else {
-        var alias = browserslist.versionAliases[data.name][version];
-        if ( alias ) return alias;
+        return browserslist.versionAliases[data.name][version];
     }
@@ -226,2 +225,9 @@ };
 
+// Return browsers market coverage
+browserslist.coverage = function (browsers) {
+    return browsers.reduce(function (all, i) {
+        return all + browserslist.usage.global[i];
+    }, 0);
+};
+
 // Return array of queries from config content
@@ -228,0 +234,0 @@ browserslist.parseConfig = function (string) {

package.json

 {
   "name": "browserslist",
-  "version": "1.1.3",
+  "version": "1.2.0",
   "description": "Get browsers versions that matches given criterias like in Autoprefixer",
@@ -16,9 +16,9 @@ "keywords": [
   "dependencies": {
-    "caniuse-db": "^1.0.30000409"
+    "caniuse-db": "^1.0.30000430"
   },
   "bin": "./cli.js",
   "devDependencies": {
-    "eslint-config-postcss": "1.0.0",
-    "eslint":                "1.10.3",
-    "ava":                   "0.11.0"
+    "eslint-config-postcss": "2.0.2",
+    "eslint":                "2.4.0",
+    "ava":                   "0.13.0"
   },
@@ -25,0 +25,0 @@ "scripts": {

README.md

@@ -13,4 +13,4 @@ # Browserslist [![Build Status][ci-img]][ci]
 browserslist('last 1 version, > 10%');
-//=> ["and_chr 47", "chrome 48", "chrome 47", "edge 13", "firefox 44",
-//    "ie 11", "ie_mob 11", "ios_saf 9.0-9.2", "opera 34", "safari 9"]
+//=> ["and_chr 49", "chrome 49", "chrome 48", "edge 13", "firefox 45",
+//    "ie 11", "ie_mob 11", "ios_saf 9.0-9.2", "opera 35", "safari 9"]
 ```
@@ -204,1 +204,16 @@
 ```
+
+## Coverage
+
+You can get total users coverage for selected browsers by JS API:
+
+```js
+browserslist.coverage(browserslist('> 1%')) //=> 81.4
+```
+
+Or by CLI:
+
+```sh
+$ browserslist --coverage "> 1%"
+These browsers account for 81.4% of all users globally
+```

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Improved metrics

Total package byte prevSize

24972

increased by5.88%

Lines of code

439

increased by6.3%

Number of lines in readme file

218

increased by7.39%

Dependency changes

• Updatedcaniuse-db@^1.0.30000430