frutjam/dist/functions/addPrefix.js

A utility-first CSS UI Library for Tailwind CSS

function prefixClassesInSelector(sel, prefix) {
  return sel.replace(/\.([\.\w-]+)/g, (_, name) => "." + prefix + name)
}

export function addPrefix(obj, prefix) {
  if (!prefix) return obj
  return Object.fromEntries(
    Object.entries(obj).map(([key, value]) => {
      const newKey = key.startsWith("@") ? key : prefixClassesInSelector(key, prefix)
      const newValue = (value && typeof value === "object") ? addPrefix(value, prefix) : value
      return [newKey, newValue]
    })
  )
}