Why isn't backdropFilter available in CSSStyleDeclaration?

Question

The following code is not valid under the error:

Property 'backdropFilter' does not exist on type 'CSSStyleDeclaration'.

const modal = document.createElement('div')
modal.style.backdropFilter = '??'

Is there an explanation to why isn't https://developer.mozilla.org/en-US/docs/Web/CSS/backdrop-filter available in typescript?

Answer 1

currently this property does not be considered as a normal case, but a special case, since it's not be supported in all version of firefox, you can keep tracing this issue: backdropFilter missing from CSSStyleDeclaration #1118