At the bottom of the documentation of the modern property there is a link to an article which explains it better. Basically, if you cut out polyfills your bundle size and parse/eval time can be cut down by half (*based on the numbers of the article).
But is important to note that this approach doesn't disable support for older browser, it just avoid loading polyfills on modern browser which doesn't need them.
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At the bottom of the documentation of the
modernproperty there is a link to an article which explains it better. Basically, if you cut out polyfills your bundle size and parse/eval time can be cut down by half (*based on the numbers of the article).But is important to note that this approach doesn't disable support for older browser, it just avoid loading polyfills on modern browser which doesn't need them.