72 lines
2.1 KiB
TypeScript
72 lines
2.1 KiB
TypeScript
import { serializedNodeWithId, NodeType, tagMap, elementNode } from './types';
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const tagMap: tagMap = {
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script: 'noscript',
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};
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function getTagName(n: elementNode): string {
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let tagName = tagMap[n.tagName] ? tagMap[n.tagName] : n.tagName;
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if (tagName === 'link' && n.attributes._cssText) {
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tagName = 'style';
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}
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return tagName;
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}
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function buildNode(n: serializedNodeWithId): Node | null {
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switch (n.type) {
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case NodeType.Document:
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return document.implementation.createDocument(null, '', null);
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case NodeType.DocumentType:
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return document.implementation.createDocumentType(
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n.name,
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n.publicId,
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n.systemId,
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);
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case NodeType.Element:
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const tagName = getTagName(n);
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const node = document.createElement(tagName);
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for (const name in n.attributes) {
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if (n.attributes.hasOwnProperty(name)) {
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let value = n.attributes[name];
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value = typeof value === 'boolean' ? '' : value;
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const isTextarea = tagName === 'textarea' && name === 'value';
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const isRemoteCss = tagName === 'style' && name === '_cssText';
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if (isTextarea || isRemoteCss) {
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const child = document.createTextNode(value);
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node.appendChild(child);
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continue;
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}
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try {
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node.setAttribute(name, value);
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} catch (error) {
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// skip invalid attribute
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}
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}
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}
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return node;
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case NodeType.Text:
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return document.createTextNode(n.textContent);
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case NodeType.CDATA:
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return document.createCDATASection(n.textContent);
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case NodeType.Comment:
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return document.createComment(n.textContent);
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default:
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return null;
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}
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}
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function rebuild(n: serializedNodeWithId): Node | null {
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const root = buildNode(n);
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if (!root) {
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return null;
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}
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if (n.type === NodeType.Document || n.type === NodeType.Element) {
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for (const childN of n.childNodes) {
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const childNode = rebuild(childN);
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root.appendChild(childNode);
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}
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}
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return root;
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}
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export default rebuild;
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