This commit introduces the following optimizations:
1. We return an empty array for text nodes in `getDirectives` because
Angular does not support attaching logic to them. This optimization
improves performance of `getDirectives` significantly because text nodes
often result in expensive calls to `loadLContext` since we can't resolve
it from a parent node.
1. `getDirectives` now calls `loadLContext` with second argument `false`
so it doesn't throw an error. This brings another significant
improvement because prevents the VM from deoptimizing calls.
BREAKING CHANGE:
Previously the `ng.getDirectives` function threw an error in case a
given DOM node had no Angular context associated with it (for example
if a function was called for a DOM element outside of an Angular app).
This behavior was inconsistent with other debugging utilities under `ng`
namespace, which handled this situation without raising an exception.
Now calling the `ng.getDirectives` function for such DOM nodes would
result in an empty array returned from that function.
PR Close#41525
f7e391a912