PromiseDuplex object is instance of PromiseWritable

dex4er · Oct 1, 2017 · 7ce0a8b · 7ce0a8b
1 parent 2796a4a
commit 7ce0a8b
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## v1.1.0 2017-10-01
+
+  * PromiseDuplex object is instance of PromiseWritable.
+
 ## v1.0.0 2017-09-29
 
   * Exports also as a class and namespace and the default.

diff --git a/lib/promise-writable.js b/lib/promise-writable.js
@@ -9,6 +9,10 @@ class PromiseWritable {
     this._finished = false
   }
 
+  static [Symbol.hasInstance] (instance) {
+    return !!instance._isPromiseDuplex
+  }
+
   write (chunk, encoding) {
     const stream = this.stream
 

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "promise-writable",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Return promise for writable stream",
   "main": "lib/promise-writable.js",
   "typings": "lib/promise-writable.d.ts",