add getRenderFunction()

src/index.ts

@@ -34,6 +34,12 @@ export default function gemtext(config: GemtextConfig = {}): AstroIntegration {
                 params.addPageExtension(".gmi")
                 params.addContentEntryType({
                     extensions: [".gmi"],
+                    getRenderFunction: async (config) => {
+                      return async (entry) => ({
+                        html: entry.body ?? '',
+                        frontmatter: entry.data,
+                      });
+                    },
                     getEntryInfo: async ({fileUrl, contents}) => {
                         const lines = contents.split("\n")
                         let data: Record<string, unknown> = {}