fix(gatsby-plugin-preact): fix preact alias (#35156) (#35169)

Co-authored-by: Ward Peeters <[email protected]>

Author: gatsbybot

packages/gatsby-plugin-preact/src/__tests__/gatsby-node.js

@@ -29,14 +29,10 @@ describe(`gatsby-plugin-preact`, () => {
       plugins: expect.arrayContaining([expect.any(PreactRefreshPlugin)]),
       resolve: {
         alias: {
-          react: expect.stringContaining(path.join(`preact`, `compat`)),
-          "react-dom": expect.stringContaining(path.join(`preact`, `compat`)),
-          "react-dom/server": expect.stringContaining(
-            path.join(`preact`, `compat`, `server`)
-          ),
-          "react/jsx-runtime": expect.stringContaining(
-            path.join(`preact`, `jsx-runtime`)
-          ),
+          react: `preact/compat`,
+          "react-dom/test-utils": `preact/test-utils`,
+          "react-dom": `preact/compat`,
+          "react/jsx-runtime": `preact/jsx-runtime`,
         },
       },
     })
@@ -100,14 +96,10 @@ describe(`gatsby-plugin-preact`, () => {
       plugins: [],
       resolve: {
         alias: {
-          react: expect.stringContaining(path.join(`preact`, `compat`)),
-          "react-dom": expect.stringContaining(path.join(`preact`, `compat`)),
-          "react-dom/server": expect.stringContaining(
-            path.join(`preact`, `compat`, `server`)
-          ),
-          "react/jsx-runtime": expect.stringContaining(
-            path.join(`preact`, `jsx-runtime`)
-          ),
+          react: `preact/compat`,
+          "react-dom/test-utils": `preact/test-utils`,
+          "react-dom": `preact/compat`,
+          "react/jsx-runtime": `preact/jsx-runtime`,
         },
       },
     })

packages/gatsby-plugin-preact/src/gatsby-node.js

@@ -59,17 +59,13 @@ export function onCreateWebpackConfig({ stage, actions, getConfig }) {
 
   actions.replaceWebpackConfig(webpackConfig)
 
-  const extension =
-    stage === `build-javascript` || stage === `develop` ? `.module.js` : `.js`
   actions.setWebpackConfig({
     resolve: {
       alias: {
-        react: require.resolve(`preact/compat`).replace(`.js`, extension),
-        "react-dom/server": require.resolve(`preact/compat/server`),
-        "react-dom": require.resolve(`preact/compat`).replace(`.js`, extension),
-        "react/jsx-runtime": require
-          .resolve(`preact/jsx-runtime`)
-          .replace(`.js`, extension),
+        react: `preact/compat`,
+        "react-dom/test-utils": `preact/test-utils`,
+        "react-dom": `preact/compat`,
+        "react/jsx-runtime": `preact/jsx-runtime`,
       },
     },
     plugins: webpackPlugins,