import flatten from 'lodash.flatten'; import { jsx } from 'slate-hyperscript'; import type { SlatePlugin } from '../types/SlatePlugin'; import type { SlateState } from '../types/state'; import parseHtml from './parseHtml'; const HtmlToSlate = ({ plugins }: { plugins: SlatePlugin[] }) => { const deserializeElement = (el: Node) => { const nodename = el.nodeName.toUpperCase(); if (el.nodeType === 3) { return el.textContent; } else if (el.nodeType !== 1) { return null; } else if (nodename === 'BR') { return '\n'; } const { nodeName } = el; const parent = el; // eslint-disable-next-line @typescript-eslint/no-explicit-any const children: any[] = flatten( Array.from(parent.childNodes).map(deserializeElement) ); if (nodename === 'BODY') { return jsx('fragment', {}, children); } const matchingPlugin = plugins.find((p) => { return ( p.pluginType === 'component' && p.deserialize?.tagName === nodeName.toLowerCase() ); }); if (matchingPlugin && matchingPlugin.pluginType === 'component') { const elHtml = el as HTMLElement; if (!elHtml.style) { // xmldom has no style attribute // we monkey patch it in for easier style parsing // eslint-disable-next-line @typescript-eslint/no-explicit-any (elHtml as any).style = new (require('cssstyle').CSSStyleDeclaration)(); // eslint-disable-next-line @typescript-eslint/no-explicit-any (elHtml.style as any).cssText = elHtml.getAttribute('style'); } if (matchingPlugin.object === 'mark') { const attrs = { [matchingPlugin.type]: matchingPlugin?.deserialize?.getData?.(elHtml) ?? true, }; return children.map((child) => jsx('text', attrs, child)); } else { const data = matchingPlugin?.deserialize?.getData?.(elHtml); const attrs = { type: matchingPlugin.type, ...(data ? { data } : {}), // don't add data if its empty }; return jsx('element', attrs, children); } } return children; }; return (htmlString: string): SlateState => { const parsed = parseHtml('' + htmlString + ''); const fragment = deserializeElement( parsed.documentElement // eslint-disable-next-line @typescript-eslint/no-explicit-any ) as unknown as any[]; const nodes = Array.isArray(fragment) ? fragment : [fragment]; // filter empty nodes (that contain only text) return { slate: nodes.filter((n) => n.text?.trim() !== '' ?? true), }; }; }; export default HtmlToSlate;