fix jest babel resolution

Author: wardpeet

jest-transformer.js

@@ -2,4 +2,11 @@ const babelJest = require(`babel-jest`)
 
 module.exports = babelJest.default.createTransformer({
   presets: [`babel-preset-gatsby-package`],
+  babelrcRoots: [
+    // Keep the root as a root
+    `.`,
+
+    // Also consider monorepo packages "root" and load their .babelrc files.
+    `./packages/*`,
+  ],
 })

packages/gatsby-sharp/.babelrc renamed to packages/gatsby-sharp/.babelrc.js

@@ -1,4 +1,5 @@
-{
+console.log('hi there');
+module.exports = {
   "presets": [["babel-preset-gatsby-package"]],
   "plugins": ["babel-plugin-replace-ts-export-assignment"]
 }