How is React's Hot Module Reloading implemented (at a medium-high level of detail)?

• react-hot-loader

  5 12,231 5.2 JavaScript

  Tweak React components in real time. (Deprecated: use Fast Refresh instead.)

  I am starting to look through the source of react-hot-loader, but it is no insignificant beast. Can someone explain at a high level how this is implemented, just in enough detail so one could reason about how to reimplement this functionality in another programming language?

• parcel-hmr-vanillas-js

  1 9 10.0 JavaScript

  Vanilla JS example for Parcel Vanillas JS

• Klotho

  klo.dev

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• chokidar

  8 9,654 4.8 JavaScript

  Minimal and efficient cross-platform file watching library

  for file watching, it might use something similar to https://www.npmjs.com/package/chokidar

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