/
serialize.js
55 lines (43 loc) · 1.62 KB
/
serialize.js
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module.exports = function serialize (rootNode) {
function serializeNode (node) {
try {
const lightDomNodes = node.childNodes
const lightDomHtml = node.innerHTML
const templateDom = document.createElement('template')
const scriptData = document.createElement('script')
const slot = node.shadowRoot.querySelector('slot')
const attributesProperties = node.getAttributeNames()
.filter(name => name !== 'data-ssr')
.reduce((obj, name) => {
return {...obj, [name]: node[name] }
}, {})
templateDom.setAttribute('type', 'ssr-light-dom')
templateDom.innerHTML = lightDomHtml
scriptData.setAttribute('type', 'ssr-data')
scriptData.innerHTML = JSON.stringify(attributesProperties)
// move light nodes into shadowDom
lightDomNodes.forEach(lightNode => slot.parentNode.insertBefore(lightNode, slot))
// move shadowDom into root node
node.shadowRoot.childNodes.forEach(shadowNode => node.appendChild(shadowNode))
// remove slot element
if (slot) {
slot.parentNode.removeChild(slot)
}
// serialize custom element child nodes
serialize(node)
// add original lightDom as template
if (templateDom.innerHTML !== '') {
node.appendChild(templateDom)
}
if (scriptData.innerHTML !== '{}') {
node.appendChild(scriptData)
}
node.setAttribute('data-ssr', 'serialized')
} catch (err) {
console.log('error:', err)
}
}
[...rootNode.querySelectorAll('*')]
.filter(element => /-/.test(element.nodeName))
.forEach(serializeNode)
}