https://github.com/MackinnonBuck/blazor-js-components
https://www.telerik.com/blogs/blazor-basics-blazor-javascript-interop-calling-javascript-net

function showMessage() {
console.log('Hello, world2!');
}

@inject IJSRuntime JS
<script src="script2.js"></script>
@code {
protected async override Task OnAfterRenderAsync(bool firstRender)
{
await JS.InvokeVoidAsync("showMessage");
}
}