This is a commit snapshot of the specification

This document contains the contents of the specification as of commit 603f83545dbe643fd0cffc040bba1b31505eb79b , and should only be used as a historical reference.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.