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by JMTQp8lwXL 1789 days ago
1. Browser APIs have subtle differences, or don't always exist in every browser you need to support (e.g, https://caniuse.com/)

2. You'll need at least a transpiler (if writing anything above ES5) and polyfills to solve #1, and if you're diving that far into the JavaScript tooling chain (bundler + babel), might as well choose to use a framework.