fix: use Array.isArray check;

- Closes #17

package.json

@@ -2,7 +2,7 @@
   "name": "clsx",
   "version": "1.0.4",
   "repository": "lukeed/clsx",
-  "description": "A tiny (223B) utility for constructing className strings conditionally.",
+  "description": "A tiny (229B) utility for constructing className strings conditionally.",
   "module": "dist/clsx.m.js",
   "unpkg": "dist/clsx.min.js",
   "main": "dist/clsx.js",
@@ -11,7 +11,7 @@
   "author": {
     "name": "Luke Edwards",
     "email": "luke.edwards05@gmail.com",
-    "url": "lukeed.com"
+    "url": "https://lukeed.com"
   },
   "engines": {
     "node": ">=6"
@@ -31,7 +31,7 @@
     "classnames"
   ],
   "devDependencies": {
-    "bundt": "^0.1.1",
+    "bundt": "^0.4.0",
     "tap-spec": "^5.0.0",
     "tape": "^4.9.1"
   }

readme.md

@@ -1,6 +1,6 @@
 # clsx [![Build Status](https://travis-ci.org/lukeed/clsx.svg?branch=master)](https://travis-ci.org/lukeed/clsx)
 
-> A tiny (223B) utility for constructing `className` strings conditionally.<Br>Also serves as a [faster](/bench) & smaller drop-in replacement for the `classnames` module.
+> A tiny (229B) utility for constructing `className` strings conditionally.<Br>Also serves as a [faster](/bench) & smaller drop-in replacement for the `classnames` module.
 
 This module is available in three formats:
 
@@ -68,6 +68,14 @@ clsx(true, false, '', null, undefined, 0, NaN);
 
 For snapshots of cross-browser results, check out the [`bench`](/bench) directory~!
 
+## Support
+
+All versions of Node.js are supported.
+
+All browsers that support [`Array.isArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray#Browser_compatibility) are supported (IE9+).
+
+>**Note:** For IE8 support and older, please install `clsx@1.0.x` and beware of [#17](https://github.com/lukeed/clsx/issues/17).
+
 
 ## Related
 

src/index.js

@@ -2,7 +2,7 @@ function toVal(mix) {
 	var k, y, str='';
 	if (mix) {
 		if (typeof mix === 'object') {
-			if (!!mix.push) {
+			if (Array.isArray(mix)) {
 				for (k=0; k < mix.length; k++) {
 					if (mix[k] && (y = toVal(mix[k]))) {
 						str && (str += ' ');

test/index.js

@@ -64,6 +64,14 @@ test('arrays (variadic)', t => {
 	t.end();
 });
 
+test('arrays (no `push` escape)', t => {
+	t.is(fn({ push:1 }), 'push');
+	t.is(fn({ pop:true }), 'pop');
+	t.is(fn({ push:true }), 'push');
+	t.is(fn('hello', { world:1, push:true }), 'hello world push');
+	t.end();
+});
+
 test('functions', t => {
 	const foo = () => {};
 	t.is(fn(foo, 'hello'), 'hello');