Merge pull request #5291 from backstage/blam/fix-deps

Fix dependency resolution for broken build

.changeset/fluffy-rice-push.md

@@ -0,0 +1,30 @@
+---
+'@backstage/create-app': patch
+---
+
+Fixing dependency resolution for problematic library `graphql-language-service-interface`.
+
+This change might not have to be applied to your local installation, however if you run into this error:
+
+```
+Error: Failed to compile.
+/tmp/backstage-e2e-uMeycm/test-app/node_modules/graphql-language-service-interface/esm/GraphQLLanguageService.js 100:23
+Module parse failed: Unexpected token (100:23)
+You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
+|         }
+|         let customRules = null;
+>         if (extensions?.customValidationRules &&
+|             typeof extensions.customValidationRules === 'function') {
+|             customRules = extensions.customValidationRules(this._graphQLConfig);
+```
+
+You can fix it by adding the following to the root `package.json`.
+
+```json
+...
+"resolutions": {
+  "graphql-language-service-interface": "2.8.2",
+  "graphql-language-service-parser": "1.9.0"
+ },
+...
+```