diff --git a/index.d.ts b/index.d.ts
index 42226a4..61e796f 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -1,5 +1,5 @@
 export default precinct;
-export type PrecinctOptions = Partial<Record<string, Record<string, any>>> & {
+export type PrecinctOptions = Record<string, unknown> & {
     type?: string;
     walker?: Record<string, any>;
 };
@@ -10,7 +10,7 @@ export type PaperworkOptions = PrecinctOptions & {
     };
 };
 /**
- * @typedef {Partial<Record<string, Record<string, any>>> & {
+ * @typedef {Record<string, unknown> & {
  *   type?: string,
  *   walker?: Record<string, any>
  * }} PrecinctOptions
@@ -30,6 +30,7 @@ export type PaperworkOptions = PrecinctOptions & {
  */
 declare function precinct(content: string | Record<string, any>, options?: PrecinctOptions): string[];
 declare namespace precinct {
+    let ast: Record<string, any> | null;
     /**
      * Returns the dependencies for the given file path
      *
diff --git a/index.js b/index.js
index c19285f..16f2b06 100644
--- a/index.js
+++ b/index.js
@@ -18,7 +18,7 @@ import detectiveVue from 'detective-vue2';
 const debug = debuglog('precinct');
 
 /**
- * @typedef {Partial<Record<string, Record<string, any>>> & {
+ * @typedef {Record<string, unknown> & {
  *   type?: string,
  *   walker?: Record<string, any>
  * }} PrecinctOptions
@@ -88,6 +88,13 @@ function precinct(content, options = {}) {
   return dependencies;
 }
 
+/**
+ * The last AST produced by precinct, or null when parsing failed
+ *
+ * @type {Record<string, any> | null}
+ */
+precinct.ast = null;
+
 /**
  * Returns the dependencies for the given file path
  *