Description

A clear and concise description of what the bug is.

I'm running dart_frog build and hitting this error:

An exception occurred while executing hook: C:\Users\awallen\AppData\Local\Mason\Cache\bundled\dart_frog_prod_server_0.1.0+1_dd63917756d9b4f8fd323148a45cb9d6c977ffb9\hooks\pre_gen.dart. Error: Null check operator used on a null value 

pre_gen.dart:103
I ran through the pre_gen.dart hook and it appears that the assertion is properly guarded

 'globalMiddleware': configuration.globalMiddleware != null ? configuration.globalMiddleware!.toJson() : false, 

Steps To Reproduce

1. Create a Dart Frog project:

dart_frog create sample

2. Adding an overridden dependency that has no matching main or dev dependency (from sample/):

dart pub add 'override:meta:'

3. Building a Dart Frog project (from sample/):

dart_frog build

4. See the error:

✓ Installing dependencies (0.4s) ✓ Bundling sources (13ms) An exception occurred while executing hook: /Users/alestiago/.mason-cache/bundled/dart_frog_prod_server_0.1.0+1_e4edd283c6291e9406142f96559194db57c10097/hooks/pre_gen.dart. Error: Null check operator used on a null value

You can access a sample with these changes at the dart_frog-1124-20240126 branch.

Expected Behavior

Builds fine.

Additional Context

• Using dart_frog: 1.0.1 with flutter: 3.10.1.
• Related to an external dependency issue (When using dependency_overrides, dependency is direct overridden which not considering alexei-sintotski/pubspec_lock#33)