bug: empty breadcrumb trail breaks the application

Prerequisites

[X] I know how to contribute a proper bug report.
[X] I agree to follow the Code of Conduct.
[X] I have searched for existing issues that already report this problem, without success.

Liquid version

@emdgroup-liquid/liquid@4.7.1

Framework bindings

React

Current behavior

Unpopulated <LdBreadcrumbs /> component shows an error message (TypeError: Cannot set properties of undefined (setting 'current')) using the React binding and results in a crash using NextJS.

Suspected root of the issue:

/* due to length === 0 this ends up being crumbs[-1] */
crumbs[crumbs.length - 1].current = true

Link to the code.

Expected behavior

Fail gently, and possibly show an error message in the console, similar to how some libraries (such as MSW) handle these. Added a small example warning message in the sandbox:

Steps to reproduce

Set up a React-based project (or use the provided sandbox from the documentation)
Update Liquid version to latest (@emdgroup-liquid/liquid@4.7.1)

Import and combine the necessary components to build a breadcrumb trail

import {
LdBreadcrumbs,
LdCrumb,
} from '@emdgroup-liquid/liquid/dist/react'

Add breadcrumbs to any page or component within the application as described in the documentation
Remove the crumbs and leave the <LdBreadcrumbs /> empty

Code reproduction URL

https://stackblitz.com/edit/github-w4j4rt?file=pages/index.tsx

Additional information

The issue is present wherever the <ld-breadcrumbs> component is used, not specific to React, but has been found using a React-based framework.

emdgroup-liquid / liquid