Bug Description

After setting up AdSense, the AdSense dashboard is not showing any data and trowing JS errors in the console. Not happening in Chrome or Firefox, only on Safari.
After removing all the browser extensions error persisted.

 TypeError: new Intl.NumberFormat(navigator.language, {
      style: 'currency',
      currency: currencyCode
    }).formatToParts is not a function. 

Steps to reproduce

1. In Safari setup AdSense
2. Go to the AdSense Dashboard.
3. See the errors in the console.

Screenshots

Additional Context

• PHP Version: 7.3
• OS: macOS High Sierra 10.13.4
• Browser: Safari 11.1
• Plugin Version: 1.0.0-beta.1.0.1
• Device: macbook

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Implementation Brief

Changelog entry