From 7c01e8dde06abb1a80118b5eddce3e238830ede0 Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Sun, 22 Oct 2023 09:54:12 -0700
Subject: [PATCH] feat: openLinksInNewTab option for link transformer

---
 quartz/components/scripts/spa.inline.ts | 1 +
 quartz/plugins/transformers/links.ts    | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/quartz/components/scripts/spa.inline.ts b/quartz/components/scripts/spa.inline.ts
index fc5aa740..31ae14fc 100644
--- a/quartz/components/scripts/spa.inline.ts
+++ b/quartz/components/scripts/spa.inline.ts
@@ -20,6 +20,7 @@ const isLocalUrl = (href: string) => {
 
 const getOpts = ({ target }: Event): { url: URL; scroll?: boolean } | undefined => {
   if (!isElement(target)) return
+  if (target.attributes.getNamedItem("target")?.value === "_blank") return
   const a = target.closest("a")
   if (!a) return
   if ("routerIgnore" in a.dataset) return
diff --git a/quartz/plugins/transformers/links.ts b/quartz/plugins/transformers/links.ts
index e050e00a..8d16136f 100644
--- a/quartz/plugins/transformers/links.ts
+++ b/quartz/plugins/transformers/links.ts
@@ -18,11 +18,13 @@ interface Options {
   markdownLinkResolution: TransformOptions["strategy"]
   /** Strips folders from a link so that it looks nice */
   prettyLinks: boolean
+  openLinksInNewTab: boolean
 }
 
 const defaultOptions: Options = {
   markdownLinkResolution: "absolute",
   prettyLinks: true,
+  openLinksInNewTab: false,
 }
 
 export const CrawlLinks: QuartzTransformerPlugin<Partial<Options> | undefined> = (userOpts) => {
@@ -52,6 +54,10 @@ export const CrawlLinks: QuartzTransformerPlugin<Partial<Options> | undefined> =
                 node.properties.className ??= []
                 node.properties.className.push(isAbsoluteUrl(dest) ? "external" : "internal")
 
+                if (opts.openLinksInNewTab) {
+                  node.properties.target = "_blank"
+                }
+
                 // don't process external links or intra-document anchors
                 const isInternal = !(isAbsoluteUrl(dest) || dest.startsWith("#"))
                 if (isInternal) {