diff --git a/src/parse.js b/src/parse.js
index 55932a1..1dc6974 100644
--- a/src/parse.js
+++ b/src/parse.js
@@ -5,7 +5,8 @@ const p = new Preprocessor();
 /**
  * @internal
  * @param {string} source
+ * @param {import('./public-types.ts').TransformerOptions} [options]
  */
-export function parse(source) {
-  return p.parse(source, { inline_source_map: false });
+export function parse(source, options = {}) {
+  return p.parse(source, { inline_source_map: false, ...options });
 }
diff --git a/src/public-types.ts b/src/public-types.ts
index 7206c67..3efa043 100644
--- a/src/public-types.ts
+++ b/src/public-types.ts
@@ -23,3 +23,15 @@ export interface Coordinates {
    */
   end: number;
 }
+
+export interface TransformerOptions {
+  /**
+   * Whether or not to use inline sourcemaps -- defaults to false.
+   */
+  inline_source_map?: boolean;
+
+  /**
+   * The filename representing the passed source string
+   */
+  filename?: string;
+}
diff --git a/src/transformer.js b/src/transformer.js
index b87a469..7bdd1fc 100644
--- a/src/transformer.js
+++ b/src/transformer.js
@@ -50,11 +50,12 @@ export class Transformer {
 
   /**
    * @param {string} source
+   * @param {import('./public-types.ts').TransformerOptions} [options]
    */
-  constructor(source) {
+  constructor(source, options = {}) {
     this.#originalSource = source;
 
-    let parsed = parse(source);
+    let parsed = parse(source, options);
     let frozenParsed = parsed.map(Object.freeze);
 
     // SAFETY: readonly types are super annoying