XS: Array.from() returns an empty array instead of throwing when items is omitted

[d01c2]

Build environment: macOS 26.5.2

Moddable SDK version:

• Installed via jsvu, so there is no SDK source tree / git describe.
• Engine reports: XS 17.9.1, slot 32 bytes, ID 4 bytes

Target device: desktop (host xs)

Description
Array.from returns an empty array when the required items argument is omitted. An omitted argument supplies undefined, so the call should throw a TypeError.

Steps to Reproduce

$ xst -e "print(JSON.stringify(Array.from()))"
[]

Expected behavior
A TypeError is thrown.

For comparison, V8 (15.3.27):

$ v8 -e "Array.from();"
TypeError: undefined is not iterable

Other information
XS already throws the expected error when undefined is passed explicitly:

$ xst -e "try { Array.from(undefined); } catch (e) { print(e.name); }"
TypeError