In TypeScript, Object.values over a checked-dynamic value whose result is
only iterated with for-of, indexed, or passed to every, some, findIndex,
forEach, join or reduce now returns a native vector of the checked values.
The program never observes the array itself, so the checked-dynamic array
and, for for-of, the dynamic iterator protocol are skipped. Typed records
fill the vector through their record ops table and plain data objects
from their entries in own-key order. Other uses, and JavaScript files,
keep the checked-dynamic array.
