Vue app does not work in an older browser
Learn why Vue apps do not work in older browsers and how to solve the problem.
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Problem description
You might ask, what can I do. Wasn’t the app supposed to work just fine in legacy browsers if scaffolded with Vue-CLI? Yes, it was supposed to. You open your app in Internet Explorer, and you are welcomed by a white screen and errors in the console. This can be very problematic to solve, especially in browsers like IE that have really terrible error messages. It’s like trying to find a needle in a haystack.
Reason
Fortunately, the reason for this problem usually is quite simple but might take a bit of time to solve. Most of the time, this issue is caused by third-party dependencies. Who would have thought? Some library authors do not provide ES5 compatible ...