fix: allow null description in CondensedMergeRequestSchema

[mobinyardim]

Description

• Node.js version: 22
• Gitbeaker version: @gitbeaker/rest: ^38.0.0 (used via danger-js)
• Gitbeaker release (cli, rest, core, requester-utils): rest, core
• OS & version: macOS Sonoma

The CondensedMergeRequestSchema interface defines description as a required string. However, the GitLab API returns null for this field when a Merge Request is created without a description (a common occurrence when using IDE integrations like IntelliJ). This causes a crash or type error when the library attempts to handle the null value.

Steps to reproduce

1. Create a Merge Request in GitLab (e.g., via IntelliJ) without entering any text in the description field.
2. Run a script using @gitbeaker/rest (or danger-js) that fetches this specific Merge Request.
3. The process will fail when it tries to map the API response to the CondensedMergeRequestSchema.

Expected behaviour

The description field should be nullable (string | null) to safely accommodate Merge Requests that do not have a description.

Actual behaviour

The application crashes or throws an error because it receives null for a field typed strictly as a string.

Possible fixes

In packages/core/src/resources/MergeRequests.ts, update the CondensedMergeRequestSchema interface as follows:

interface CondensedMergeRequestSchema extends Record<string, unknown> {
    id: number;
    iid: number;
    project_id: number;
    title: string;
    description: string | null; // Allow null to prevent crashes
    state: string;
    created_at: string;
    updated_at: string;
    web_url: string;
}

Checklist

• I have checked that this is not a duplicate issue.
• I have read the documentation.

[glensc]

No longer the case:

• gitbeaker/packages/core/src/resources/MergeRequests.ts

  Line 87 in 7a0909f

  description: string | null;

[glensc]

Seems to be fixed via #3733

Which is:

This pull request first appeared in 43.0.0

[glensc]

@mobinyardim you can close this issue