This document contains the contents of the specification as of commit 1d0fe7c85c8f81a4ea301498ac036a8ef37a2a3d , and should only be used as a historical reference.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.