Function enqueueTask

lib/index-browser.js:5660–5671

(action, callback, PouchDB)

}

function enqueueTask(action, callback, PouchDB) {
  queue.push(function runAction() {
    action(function runCallback(err, res) {
      tryCode(callback, err, res, PouchDB);
      running = false;
      nextTick(function runNext() {
        applyNext(PouchDB);
      });
    });
  });
  applyNext();
}

function changes(opts, api, dbName, idb) {
  opts = clone(opts);