Function isObservable

lib/utils.js:7–7

const symbolObservable = typeof Symbol === 'function' && Symbol.observable || '@@observable';		// eslint-disable-line no-mixed-operators

const isObservable = obj => Boolean(obj && obj[symbolObservable] && obj === obj[symbolObservable]()) || require('is-observable')(obj);

exports.isListr = obj => Boolean(obj && obj.setRenderer && obj.add && obj.run);
exports.isObservable = obj => isObservable(obj);