This document contains the contents of the specification as of commit 068f7a6d842d3e35a50a6b28acfec6d2ebca852d , and should only be used as a historical reference.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.