You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
22 lines
800 B
JavaScript
22 lines
800 B
JavaScript
5 years ago
|
'use strict';
|
||
|
|
|
||
|
|
var isStream = module.exports = function (stream) {
|
||
|
|
return stream !== null && typeof stream === 'object' && typeof stream.pipe === 'function';
|
||
|
|
};
|
||
|
|
|
||
|
|
isStream.writable = function (stream) {
|
||
|
|
return isStream(stream) && stream.writable !== false && typeof stream._write === 'function' && typeof stream._writableState === 'object';
|
||
|
|
};
|
||
|
|
|
||
|
|
isStream.readable = function (stream) {
|
||
|
|
return isStream(stream) && stream.readable !== false && typeof stream._read === 'function' && typeof stream._readableState === 'object';
|
||
|
|
};
|
||
|
|
|
||
|
|
isStream.duplex = function (stream) {
|
||
|
|
return isStream.writable(stream) && isStream.readable(stream);
|
||
|
|
};
|
||
|
|
|
||
|
|
isStream.transform = function (stream) {
|
||
|
|
return isStream.duplex(stream) && typeof stream._transform === 'function' && typeof stream._transformState === 'object';
|
||
|
|
};
|