git ssb

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/**
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 * @function getUserAgent
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 * @description Returns the user agent of the request or from the navigator
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 * @param  {Object} request Http request
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 * @return {String} User Agent
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 */
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export const getUserAgent = request => {
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  if (request) {
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    return request.headers['user-agent'];
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  } else if (typeof window !== 'undefined' && window.navigator) {
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    return window.navigator.userAgent;
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  }
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  return '';
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};