You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
29 lines
677 B
29 lines
677 B
2 years ago
|
'use strict';
|
||
|
|
|
||
|
|
const isStream = stream =>
|
||
|
|
stream !== null &&
|
||
|
|
typeof stream === 'object' &&
|
||
|
|
typeof stream.pipe === 'function';
|
||
|
|
|
||
|
|
isStream.writable = stream =>
|
||
|
|
isStream(stream) &&
|
||
|
|
stream.writable !== false &&
|
||
|
|
typeof stream._write === 'function' &&
|
||
|
|
typeof stream._writableState === 'object';
|
||
|
|
|
||
|
|
isStream.readable = stream =>
|
||
|
|
isStream(stream) &&
|
||
|
|
stream.readable !== false &&
|
||
|
|
typeof stream._read === 'function' &&
|
||
|
|
typeof stream._readableState === 'object';
|
||
|
|
|
||
|
|
isStream.duplex = stream =>
|
||
|
|
isStream.writable(stream) &&
|
||
|
|
isStream.readable(stream);
|
||
|
|
|
||
|
|
isStream.transform = stream =>
|
||
|
|
isStream.duplex(stream) &&
|
||
|
|
typeof stream._transform === 'function';
|
||
|
|
|
||
|
|
module.exports = isStream;
|