feat: import markdown-it-plugins from https://github.com/hedgedoc/markdown-it-plugins

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

markdown-it-plugins/src/toc/toc-options.ts

@@ -0,0 +1,42 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+import { TocAst } from './toc-ast.js'
+
+export type TocOptions = {
+  slugify: (name: string, index: number) => string
+  uniqueSlugStartIndex: number
+  containerClass: string
+  containerId: string
+  listClass: string
+  itemClass: string
+  linkClass: string
+  level: number | number[]
+  listType: 'ol' | 'ul'
+  format?: (name: string) => string
+  callback?: (ast: TocAst) => void
+  allowedTokenTypes: string[]
+}
+
+function defaultSlugify(name: string) {
+  return encodeURIComponent(String(name).trim().toLowerCase().replace(/\s+/g, '-'))
+}
+
+/**
+ * The default options for the toc plugin.
+ */
+export const defaultOptions: TocOptions = {
+  uniqueSlugStartIndex: 0,
+  containerClass: 'table-of-contents',
+  containerId: '',
+  listClass: '',
+  itemClass: '',
+  linkClass: '',
+  level: 1,
+  listType: 'ol',
+  allowedTokenTypes: ['text', 'code_inline'],
+  slugify: defaultSlugify
+}