Add readable, writable and duplex

2018-10-03 22:16:10 +03:00
parent bff38c6387
commit 21622234d6
16 changed files with 161 additions and 3 deletions
--- a/test/isWritableStream/isWritableStream.js
+++ b/test/isWritableStream/isWritableStream.js
@ -0,0 +1,7 @@
+const isWritableStream = val =>
+  val !== null &&
+  typeof val === 'object' &&
+  typeof val.pipe === 'function' &&
+  typeof val._write === 'function' &&
+  typeof val._writableState === 'object';
+module.exports = isWritableStream;