The linked article lists a number of techniques that were best practices with ES5, but have better alternatives in modern JavaScript.

Best practices don’t last forever. This is especially true when a field is changing fast, and JavaScript development has changed a lot over the past 10 years. The old best practices go stale, and new ones take their place. Here are 5 JavaScript best practices that have gone stale recently.

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

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