chore(docs): Add dependency for TypeScript testing (#36050)

gatsbyjs · Jul 22, 2022 · 45bb97a · 45bb97a
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commit 45bb97a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/docs/how-to/testing/unit-testing.md b/docs/docs/how-to/testing/unit-testing.md
@@ -237,7 +237,7 @@ If you are using TypeScript, you need to install typings packages and make
 two changes to your config.
 
 ```shell
-npm install --save-dev @types/jest @types/react-test-renderer
+npm install --save-dev @types/jest @types/react-test-renderer @babel/preset-typescript
 ```
 
 Update the transform in `jest.config.js` to run `jest-preprocess` on files in your project's root directory.