linkExternal: add content slot

There's not necessarily a use for linkExternal with content slot
on its own as of this commit, compared to a normal html.tag('a'),
because linkExternal basically just wraps formatExternalLink and
the content slot opts out of using that. But this does allow this
component to be used in places now... and extended upon... later!

1 files changed, 13 insertions, 5 deletions

diff --git a/src/content/dependencies/linkExternal.js b/src/content/dependencies/linkExternal.js
index 9469a9e..2de1bc7 100644
--- a/src/content/dependencies/linkExternal.js
+++ b/src/content/dependencies/linkExternal.js
@@ -6,6 +6,11 @@ export default {
   data: (url) => ({url}),
 
   slots: {
+    content: {
+      type: 'html',
+      mutable: false,
+    },
+
     style: {
       // This awkward syntax is because the slot descriptor validator can't
       // differentiate between a function that returns a validator (the usual
@@ -27,12 +32,15 @@ export default {
 
   generate(data, slots, {html, language}) {
     const linkAttributes = html.attributes();
+    let linkContent = slots.content;
 
-    let linkContent =
-      language.formatExternalLink(data.url, {
-        style: slots.style,
-        context: slots.context,
-      });
+    if (html.isBlank(linkContent)) {
+      linkContent =
+        language.formatExternalLink(data.url, {
+          style: slots.style,
+          context: slots.context,
+        });
+    }
 
     // Fall back to platform if nothing matched the desired style.
     if (html.isBlank(linkContent) && slots.style !== 'platform') {