When I try to verify
if (!window.MSStream) ...
I encounter an error in TypeScript, the intellisense highlights the MSStream object because it has not been declared - which is precisely why I need to check it. Unfortunately, this prevents me from building my Angular2 app due to the error. Is there a way to trick TypeScript or make it less strict, allowing me to perform the check without interference...
MSStream is not included in the type definitions for window.
To resolve this issue, you can add this type manually or access the property using square brackets. This way, the TypeScript compiler will work without any problems.
if (!window['MSStream']) { /* perform action */ }
if (!window['MSStream']) { /* execute this code */ }
Unfortunately, the previous code snippet is no longer functional as it returns:
An error stating: Element implicitly has an 'any' type because index expression is not of type 'number'.
However, the following workaround will succeed:
(window as Window & {MSStream?: { /* properties go here */}}).propXYZ
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