How to use the empty function from is

vjs.dailymotion.js

GitHub: Rekall/Rekall

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is.defined = function (value) {
  return typeof value !== 'undefined';
};

/**
 * is.empty
 * Test if `value` is empty.
 *
 * @param {Mixed} value value to test
 * @return {Boolean} true if `value` is empty, false otherwise

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forms.js

GitHub: caolan/forms

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            empty: function (form) { return resolve({ empty: true, form: form }); }
        };
    });
}

if (typeof obj === 'undefined' || obj === null || (is.object(obj) && is.empty(obj))) {
    (callbacks.empty || callbacks.other)(f, callbacks);
} else if (obj instanceof http.IncomingMessage) {
    if (obj.method === 'GET') {
        var qs = parse(obj.url, { parseArrays: false }).query;

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+ 15 other calls in file

api.js

GitHub: nalajcie/tuya-cloud-to-influxdb

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  return;
}

const sess = config.get('sess');

if (is.undef(sess) || is.empty(sess)) {
  throw new Error('No valid session found. Please authorize first');
}

api.sid = sess.sid;

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