feat: add support for markdown extension in readme files

Author: idleberg

app/utils/file-icons.ts

@@ -249,7 +249,8 @@ const FILENAME_ICONS: Record<string, string> = {
   'README': 'i-vscode-icons-file-type-markdown',
   'README.md': 'i-vscode-icons-file-type-markdown',
   'readme.md': 'i-vscode-icons-file-type-markdown',
-  'Readme.md': 'i-vscode-icons-file-type-markdown',
+  'README.markdown': 'i-vscode-icons-file-type-markdown',
+  'readme.markdown': 'i-vscode-icons-file-type-markdown',
   'CHANGELOG': 'i-vscode-icons-file-type-markdown',
   'CHANGELOG.md': 'i-vscode-icons-file-type-markdown',
   'changelog.md': 'i-vscode-icons-file-type-markdown',

server/api/registry/readme/[...pkg].get.ts

@@ -14,7 +14,7 @@ async function fetchReadmeFromJsdelivr(
   packageName: string,
   version?: string,
 ): Promise<string | null> {
-  const filenames = ['README.md', 'readme.md', 'Readme.md', 'README', 'readme']
+  const filenames = ['README.md', 'readme.md', 'Readme.md', 'README', 'readme', 'README.markdown', 'readme.markdown']
   const versionSuffix = version ? `@${version}` : ''
 
   for (const filename of filenames) {

server/utils/code-highlight.ts

@@ -74,6 +74,7 @@ const FILENAME_MAP: Record<string, string> = {
   'CHANGELOG.md': 'markdown',
   'README': 'markdown',
   'README.md': 'markdown',
+  'README.markdown': 'markdown',
 }
 
 /**