The hit-test at the element's centre did not find it — covered, off screen, or scrolled out of view. obstruction is what the hit-test found instead, or null when nothing is there at all.
obstruction
null
Optional
Static
Optional override for formatting stack traces
https://v8.dev/docs/stack-trace-api#customizing-stack-traces
Readonly
Create .stack property on a target object
The hit-test at the element's centre did not find it — covered, off screen, or scrolled out of view.
obstructionis what the hit-test found instead, ornullwhen nothing is there at all.