This document contains the contents of the specification as of commit 2c5fba058a5f433baa6b88e5acc2f15fd52363ea , and should only be used as a historical reference. This commit may not have even been merged into the specification.
Do not attempt to implement this version of the specification. Do not reference this version as authoritative in any way. Instead, see https://tc39.github.io/ecma262 for the living specification.