feat: import html-to-react from https://github.com/hedgedoc/html-to-react

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

html-to-react/src/convertHtmlToReact.ts

@@ -0,0 +1,38 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { parseDocument } from 'htmlparser2'
+import { processNodes } from './processNodes.js'
+import { ReactElement } from 'react'
+import { Document } from 'domhandler'
+import { NodeToReactElementTransformer } from './NodeToReactElementTransformer.js'
+
+export interface ParserOptions {
+  decodeEntities?: boolean
+  transform?: NodeToReactElementTransformer
+  preprocessNodes?: (nodes: Document) => Document
+}
+
+/**
+ * Parses an HTML string and returns a list of React components generated from it
+ *
+ * @param {String} html The HTML to convert into React component
+ * @param {Object} options Options to pass
+ * @returns {Array} List of top level React elements
+ */
+export function convertHtmlToReact(
+  html: string,
+  options?: ParserOptions
+): (ReactElement | string | null)[] {
+  const parsedDocument = parseDocument(html, {
+    decodeEntities: options?.decodeEntities ?? true
+  })
+
+  const processedDocument =
+    options?.preprocessNodes?.(parsedDocument) ?? parsedDocument
+
+  return processNodes(processedDocument.childNodes, options?.transform)
+}