is-buffer - npm Package Compare versions

Comparing version 1.1.3 to 1.1.4

index.js

@@ -1,17 +0,21 @@
-/**
- * Determine if an object is Buffer
+/*!
+ * Determine if an object is a Buffer
  *
- * Author:   Feross Aboukhadijeh <[e-mail]> <http://feross.org>
- * License:  MIT
- *
- * `npm install is-buffer`
+ * @author   Feross Aboukhadijeh <[e-mail]> <http://feross.org>
+ * @license  MIT
  */
 
+// The _isBuffer check is for Safari 5-7 support, because it's missing
+// Object.prototype.constructor. Remove this eventually
 module.exports = function (obj) {
-  return !!(obj != null &&
-    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
-      (obj.constructor &&
-      typeof obj.constructor.isBuffer === 'function' &&
-      obj.constructor.isBuffer(obj))
-    ))
+  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
 }
+
+function isBuffer (obj) {
+  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
+}
+
+// For Node v0.10 support. Remove this eventually.
+function isSlowBuffer (obj) {
+  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
+}

package.json

 {
   "name": "is-buffer",
-  "description": "Determine if an object is Buffer",
-  "version": "1.1.3",
+  "description": "Determine if an object is a Buffer",
+  "version": "1.1.4",
   "author": {
@@ -15,9 +15,6 @@ "name": "Feross Aboukhadijeh",
   "devDependencies": {
-    "standard": "^6.0.5",
+    "standard": "^7.0.0",
     "tape": "^4.0.0",
     "zuul": "^3.0.0"
   },
-  "engines": {
-    "node": ">=0.12"
-  },
   "keywords": [
@@ -24,0 +21,0 @@ "buffer",

README.md

 # is-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][npm-url]
 
-#### Determine if an object is a [`Buffer`](http://nodejs.org/api/buffer.html) (incl. [browser Buffers](https://github.com/feross/buffer))
+#### Determine if an object is a [`Buffer`](http://nodejs.org/api/buffer.html) (including the [browserify Buffer](https://github.com/feross/buffer))
 
@@ -5,0 +5,0 @@ [![saucelabs][saucelabs-image]][saucelabs-url]

test/basic.js

@@ -0,1 +1,2 @@
+var buffer = require('buffer')
 var isBuffer = require('../')
@@ -5,17 +6,21 @@ var test = require('tape')
 test('is-buffer', function (t) {
-  t.ok(isBuffer(new Buffer(4)), 'new Buffer(4)')
+  t.equal(isBuffer(new Buffer(4)), true, 'new Buffer(4)')
+  t.equal(isBuffer(buffer.SlowBuffer(100)), true, 'SlowBuffer(100)')
 
-  t.notOk(isBuffer(undefined), 'undefined')
-  t.notOk(isBuffer(null), 'null')
-  t.notOk(isBuffer(''), 'empty string')
-  t.notOk(isBuffer(true), 'true')
-  t.notOk(isBuffer(false), 'false')
-  t.notOk(isBuffer(0), '0')
-  t.notOk(isBuffer(1), '1')
-  t.notOk(isBuffer(1.0), '1.0')
-  t.notOk(isBuffer('string'), 'string')
-  t.notOk(isBuffer({}), '{}')
-  t.notOk(isBuffer(function foo () {}), 'function foo () {}')
+  t.equal(isBuffer(undefined), false, 'undefined')
+  t.equal(isBuffer(null), false, 'null')
+  t.equal(isBuffer(''), false, 'empty string')
+  t.equal(isBuffer(true), false, 'true')
+  t.equal(isBuffer(false), false, 'false')
+  t.equal(isBuffer(0), false, '0')
+  t.equal(isBuffer(1), false, '1')
+  t.equal(isBuffer(1.0), false, '1.0')
+  t.equal(isBuffer('string'), false, 'string')
+  t.equal(isBuffer({}), false, '{}')
+  t.equal(isBuffer([]), false, '[]')
+  t.equal(isBuffer(function foo () {}), false, 'function foo () {}')
+  t.equal(isBuffer({ isBuffer: null }), false, '{ isBuffer: null }')
+  t.equal(isBuffer({ isBuffer: function () { throw new Error() } }), false, '{ isBuffer: function () { throw new Error() } }')
 
   t.end()
 })

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Improved metrics

Total package byte prevSize

6085

increased by11.9%

Lines of code

40

increased by21.21%

No dependency changes