Mark the module as side-effect-free

[EvgenyOrekhov]

See https://webpack.js.org/guides/tree-shaking/#mark-the-file-as-side-effect-free.

This will allow a more efficient tree-shaking.

[prettymuchbryce]

Thanks @EvgenyOrekhov. I was not aware of this.

[EvgenyOrekhov]

Not sure whether it had an actual effect. BundlePhobia reports that every individual export is 3 KB: https://bundlephobia.com/[email protected].

[prettymuchbryce]

I don't think it did. I think this is due to exporting the StatusCodes and ReasonPhrases as enums which causes the whole enum to be bundled.

I think it may be possible to support enums while also taking better advantage of tree shaking.

Some more discussion of this happening in #55.