This project is a ponyfill that provides a function, `hydrateShadowRoots`, to convert `<template>` elements with a `shadowrootmode` attribute into ShadowRoots on the template's parent element. It enables the serialization and rehydration of HTML with shadow roots on the client, allowing for SSR compatibility. This is particularly useful for developers working with web components and SSR, who need to ensure their components work seamlessly in both server-side and client-side environments.