diff --git a/src/passes/generate-ts.js b/src/passes/generate-ts.js
index dafcfb3..586193d 100644
--- a/src/passes/generate-ts.js
+++ b/src/passes/generate-ts.js
@@ -778,35 +778,35 @@ function generateTS(ast, options) {
       "  end: IFilePosition;",
       "}",
       "",
-      "interface ILiteralExpectation {",
+      "export interface ILiteralExpectation {",
       "  type: \"literal\";",
       "  text: string;",
       "  ignoreCase: boolean;",
       "}",
       "",
-      "interface IClassParts extends Array<string | IClassParts> {}",
+      "export interface IClassParts extends Array<string | IClassParts> {}",
       "",
-      "interface IClassExpectation {",
+      "export interface IClassExpectation {",
       "  type: \"class\";",
       "  parts: IClassParts;",
       "  inverted: boolean;",
       "  ignoreCase: boolean;",
       "}",
       "",
-      "interface IAnyExpectation {",
+      "export interface IAnyExpectation {",
       "  type: \"any\";",
       "}",
       "",
-      "interface IEndExpectation {",
+      "export interface IEndExpectation {",
       "  type: \"end\";",
       "}",
       "",
-      "interface IOtherExpectation {",
+      "export interface IOtherExpectation {",
       "  type: \"other\";",
       "  description: string;",
       "}",
       "",
-      "type Expectation = ILiteralExpectation | IClassExpectation | IAnyExpectation | IEndExpectation | IOtherExpectation;",
+      "export type Expectation = ILiteralExpectation | IClassExpectation | IAnyExpectation | IEndExpectation | IOtherExpectation;",
       "",
       "export class SyntaxError extends Error {",
       "  public static buildMessage(expected: Expectation[], found: string | null) {",