Why is createJSObjectReference not usable for functions?

[trungnt2910]

createJSObjectReference, the function that powers IJSRuntime and IJSObjectReference, has this line:

aspnetcore/src/JSInterop/Microsoft.JSInterop.JS/src/src/Microsoft.JSInterop.ts

Line 148 in 7033ec7

if (jsObject && typeof jsObject === "object") {

This means things like this will fail:

        await using var func = await JSRuntime.InvokeAsync<IJSObjectReference>("window.alert");
        await func.InvokeVoidAsync("call", "Hello World!");

Why is that check there in the first place? Without such restrictions, issues like #31151 are basically solved.