DEV Community

Discussion on: Typical JavaScript interview exercises (explained)

Collapse
dwmiller profile image
David Miller

Why would you need to freeze it? This stuff is synchronous, how would it change in the middle of your operation?

Collapse
richseviora profile image
Rich Seviora

It's to guard against future changes. But the requirement was to "preserve immutability" and so this makes the original data set immutable going forward.