feat(jest-transform): expose TransformerFactory type

Author: anh.pham

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ### Features
 
+- `[jest-transform]` Expose `TransformFactory` type ([#13184](https://github.com/facebook/jest/pull/13184))
+
 ### Fixes
 
 ### Chore & Maintenance

packages/jest-transform/src/index.ts

@@ -22,5 +22,6 @@ export type {
   TransformOptions,
   TransformResult,
   TransformedSource,
+  TransformerFactory,
 } from './types';
 export {default as handlePotentialSyntaxError} from './enhanceUnexpectedTokenMessage';