feat: scrub link formatting from toc entries

quartz/plugins/transformers/toc.ts

@@ -3,6 +3,7 @@ import { Root } from "mdast"
 import { visit } from "unist-util-visit"
 import { toString } from "mdast-util-to-string"
 import Slugger from "github-slugger"
+import { wikilinkRegex } from "./ofm"
 
 export interface Options {
   maxDepth: 1 | 2 | 3 | 4 | 5 | 6
@@ -24,6 +25,7 @@ interface TocEntry {
   slug: string // this is just the anchor (#some-slug), not the canonical slug
 }
 
+const regexMdLinks = new RegExp(/\[([^\[]+)\](\(.*\))/, "g")
 export const TableOfContents: QuartzTransformerPlugin<Partial<Options> | undefined> = (
   userOpts,
 ) => {
@@ -41,7 +43,16 @@ export const TableOfContents: QuartzTransformerPlugin<Partial<Options> | undefin
               let highestDepth: number = opts.maxDepth
               visit(tree, "heading", (node) => {
                 if (node.depth <= opts.maxDepth) {
-                  const text = toString(node)
+                  let text = toString(node)
+
+                  // strip link formatting from toc entries
+                  text = text.replace(wikilinkRegex, (_, rawFp, __, rawAlias) => {
+                    const fp = rawFp?.trim() ?? ""
+                    const alias = rawAlias?.slice(1).trim()
+                    return alias ?? fp
+                  })
+                  text = text.replace(regexMdLinks, "$1")
+
                   highestDepth = Math.min(highestDepth, node.depth)
                   toc.push({
                     depth: node.depth,