From fea352849c6972da4b3b8935eb2e86f6cefc76ed Mon Sep 17 00:00:00 2001
From: Ben Schlegel <ben5.schlegel@gmail.com>
Date: Sat, 16 Sep 2023 17:45:21 +0000
Subject: [PATCH] fix: create deep copy of file passed into tree

---
 quartz/plugins/transformers/links.ts |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/quartz/plugins/transformers/links.ts b/quartz/plugins/transformers/links.ts
index f8da36c..e050e00 100644
--- a/quartz/plugins/transformers/links.ts
+++ b/quartz/plugins/transformers/links.ts
@@ -5,7 +5,6 @@
   SimpleSlug,
   TransformOptions,
   _stripSlashes,
-  joinSegments,
   simplifySlug,
   splitAnchor,
   transformLink,
@@ -54,7 +53,8 @@
                 node.properties.className.push(isAbsoluteUrl(dest) ? "external" : "internal")
 
                 // don't process external links or intra-document anchors
-                if (!(isAbsoluteUrl(dest) || dest.startsWith("#"))) {
+                const isInternal = !(isAbsoluteUrl(dest) || dest.startsWith("#"))
+                if (isInternal) {
                   dest = node.properties.href = transformLink(
                     file.data.slug!,
                     dest,
@@ -63,7 +63,7 @@
 
                   // url.resolve is considered legacy
                   // WHATWG equivalent https://nodejs.dev/en/api/v18/url/#urlresolvefrom-to
-                  const url = new URL(dest, `resolve://${curSlug}`)
+                  const url = new URL(dest, `https://base.com/${curSlug}`)
                   const canonicalDest = url.pathname
                   const [destCanonical, _destAnchor] = splitAnchor(canonicalDest)
 
@@ -72,11 +72,13 @@
                     simplifySlug(destCanonical as FullSlug),
                   ) as SimpleSlug
                   outgoing.add(simple)
+                  node.properties["data-slug"] = simple
                 }
 
                 // rewrite link internals if prettylinks is on
                 if (
                   opts.prettyLinks &&
+                  isInternal &&
                   node.children.length === 1 &&
                   node.children[0].type === "text" &&
                   !node.children[0].value.startsWith("#")

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