File "cloneNodes.js"
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/**
* @param {import('postcss').Container[]} nodes
* @param {any} source
* @param {any} raws
* @returns {import('postcss').Container[]}
*/
export default function cloneNodes(nodes, source = undefined, raws = undefined) {
return nodes.map((node) => {
let cloned = node.clone()
if (raws !== undefined) {
cloned.raws.tailwind = {
...cloned.raws.tailwind,
...raws,
}
}
if (source !== undefined) {
traverse(cloned, (node) => {
// Do not traverse nodes that have opted
// to preserve their original source
let shouldPreserveSource = node.raws.tailwind?.preserveSource === true && node.source
if (shouldPreserveSource) {
return false
}
// Otherwise we can safely replace the source
// And continue traversing
node.source = source
})
}
return cloned
})
}
/**
* Traverse a tree of nodes and don't traverse children if the callback
* returns false. Ideally we'd use Container#walk instead of this
* function but it stops traversing siblings too.
*
* @param {import('postcss').Container} node
* @param {(node: import('postcss').Container) => boolean} onNode
*/
function traverse(node, onNode) {
if (onNode(node) !== false) {
node.each?.((child) => traverse(child, onNode))
}
}