Blazor: JSObjectReference and JSInProcessObjectReference types changed to internal

The new Microsoft.JSInterop.JSObjectReference and Microsoft.JSInterop.JSInProcessObjectReference types introduced in ASP.NET Core 5.0 RC1 have been marked as internal.

Version introduced

5.0 RC2

Old behavior

A JSObjectReference can be obtained from a JavaScript interop call via IJSRuntime. For example:

var jsObjectReference = await JSRuntime.InvokeAsync<JSObjectReference>(...);

New behavior

JSObjectReference uses the internal access modifier. The public IJSObjectReference interface must be used instead. For example:

var jsObjectReference = await JSRuntime.InvokeAsync<IJSObjectReference>(...);

JSInProcessObjectReference was also marked as internal and was replaced by IJSInProcessObjectReference.

Reason for change

The change makes the JavaScript interop feature more consistent with other patterns within Blazor. IJSObjectReference is analogous to IJSRuntime in that it serves a similar purpose and has similar methods and extensions.

Recommended action

Replace occurrences of JSObjectReference and JSInProcessObjectReference with IJSObjectReference and IJSInProcessObjectReference, respectively.

Affected APIs

• Microsoft.JSInterop.JSObjectReference
• Microsoft.JSInterop.JSInProcessObjectReference