To be honest, 99% of the times you don't need to support old tech. It is important that your product serves as much people as possible, but is more important to focus your product. If, for example, your web's target is gamers, supporting IE6 and Opera is surely overkill. And real life
Usually only very specific type of software targeted to companies which depend on outdated OSs is worth the effort.
Also, almost everybody has a smartphone with evergreen browsers in their pocket. Even if you are constrained by old tech in your workplace, you can still do everything.
If your company requires you to support old tech, then do it. But I don't even transpile my ES6 to ES5 in personal projects.
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To be honest, 99% of the times you don't need to support old tech. It is important that your product serves as much people as possible, but is more important to focus your product. If, for example, your web's target is gamers, supporting IE6 and Opera is surely overkill. And real life
Usually only very specific type of software targeted to companies which depend on outdated OSs is worth the effort.
Also, almost everybody has a smartphone with evergreen browsers in their pocket. Even if you are constrained by old tech in your workplace, you can still do everything.
If your company requires you to support old tech, then do it. But I don't even transpile my ES6 to ES5 in personal projects.