fix: add missing prefix before relative path is resolved

Author: PatrickHeneise

src/lib/remark-plugins/links/index.js

@@ -42,6 +42,11 @@ export default function relativeLinks(options) {
         node.url = node.url.replace(ext, '')
       }
 
+      // add prefix to rootPath if it has been passed
+      if (prefix && !rootPath.startsWith(`/${prefix}`)) {
+        rootPath = `/${prefix}${rootPath}`
+      }
+
       // drop README from root and node url
       rootPath = rootPath.replace('/README', '')
       node.url = node.url.replace('/README', '')
@@ -50,7 +55,6 @@ export default function relativeLinks(options) {
       const rootPathParts = rootPath.split(sep).slice(1)
       const depth = (originalUrl.match(/\.\.\//g) || []).length
       const skipPrefix = depth > 0 && rootPathParts.length === depth
-
       const relative = resolve(rootPath, node.url)
       if (
         !skipPrefix &&

test/remark-plugins/links.test.js

@@ -166,6 +166,20 @@ const cases = [
     prefix: '',
     options: { trailingSlash: true, useMDX: true },
     expected: '/certificate-manager/'
+  },
+  {
+    url: './certificate-authority-server-production.mdx',
+    rootPath: '/step-ca/basic-certificate-authority-operations.mdx',
+    prefix: 'docs',
+    options: { trailingSlash: true, useMDX: true },
+    expected: '/docs/step-ca/certificate-authority-server-production/'
+  },
+  {
+    url: '../step-cli/reference/ssh',
+    rootPath: '/step-ca/basic-certificate-authority-operations.mdx',
+    prefix: 'docs',
+    options: { trailingSlash: true, useMDX: true },
+    expected: '/docs/step-cli/reference/ssh/'
   }
 ]