diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..36c1c50
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,7 @@
+export interface Block {
+  scope: string,
+  children: Block[],
+}
+
+/** Parse blocks of text based on indentation. */
+export function parse(text: string): Block[]