7 lines
149 B
JavaScript
7 lines
149 B
JavaScript
|
'use strict';
|
||
|
|
var symbolObservable = require('symbol-observable');
|
||
|
|
|
||
|
|
module.exports = function (fn) {
|
||
|
|
return Boolean(fn && fn[symbolObservable]);
|
||
|
|
};
|