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Torin Sandall
fa9ae9437c
The gitbook install has been incredibly flaky due to it's dependency on npm. This commit simply vendors the node_modules so that each time we build the site the process doesn't have to re-run gitbook install. Signed-off-by: Torin Sandall <torinsandall@gmail.com>
isStream
Test if an object is a Stream
The missing Stream.isStream(obj): determine if an object is standard Node.js Stream. Works for Node-core Stream objects (for 0.8, 0.10, 0.11, and in theory, older and newer versions) and all versions of readable-stream.
Usage:
var isStream = require('isstream')
var Stream = require('stream')
isStream(new Stream()) // true
isStream({}) // false
isStream(new Stream.Readable()) // true
isStream(new Stream.Writable()) // true
isStream(new Stream.Duplex()) // true
isStream(new Stream.Transform()) // true
isStream(new Stream.PassThrough()) // true
But wait! There's more!
You can also test for isReadable(obj), isWritable(obj) and isDuplex(obj) to test for implementations of Streams2 (and Streams3) base classes.
var isReadable = require('isstream').isReadable
var isWritable = require('isstream').isWritable
var isDuplex = require('isstream').isDuplex
var Stream = require('stream')
isReadable(new Stream()) // false
isWritable(new Stream()) // false
isDuplex(new Stream()) // false
isReadable(new Stream.Readable()) // true
isReadable(new Stream.Writable()) // false
isReadable(new Stream.Duplex()) // true
isReadable(new Stream.Transform()) // true
isReadable(new Stream.PassThrough()) // true
isWritable(new Stream.Readable()) // false
isWritable(new Stream.Writable()) // true
isWritable(new Stream.Duplex()) // true
isWritable(new Stream.Transform()) // true
isWritable(new Stream.PassThrough()) // true
isDuplex(new Stream.Readable()) // false
isDuplex(new Stream.Writable()) // false
isDuplex(new Stream.Duplex()) // true
isDuplex(new Stream.Transform()) // true
isDuplex(new Stream.PassThrough()) // true
Reminder: when implementing your own streams, please use readable-stream rather than core streams.
License
isStream is Copyright (c) 2015 Rod Vagg @rvagg and licenced under the MIT licence. All rights not explicitly granted in the MIT license are reserved. See the included LICENSE.md file for more details.