Rethrow errors without specific handling

Author: phacks

packages/gatsby-remark-code-repls/src/__tests__/gatsby-node.js

@@ -135,18 +135,6 @@ describe(`gatsby-remark-code-repls`, () => {
       }
     })
 
-    it(`should wrap any non-error rejection from recursive-readdir in an Error instance`, async () => {
-      const rejectionMessage = `an error message`
-
-      readdir.mockRejectedValue(rejectionMessage)
-
-      try {
-        await createPages(createPagesParams)
-      } catch (err) {
-        expect(err).toEqual(Error(rejectionMessage))
-      }
-    })
-
     it(`should not load any external packages by default`, async () => {
       readdir.mockResolvedValue([`file.js`])
 

packages/gatsby-remark-code-repls/src/gatsby-node.js

@@ -75,9 +75,7 @@ exports.createPages = async (
       }
     })
   } catch (error) {
-    if (error instanceof Error) {
-      throw error
-    }
-    throw Error(error)
+    // retrow errors upstream
+    throw error
   }
 }