es2021.md

This document specifies the extensions to the core ESTree AST types to support the ES2021 grammar.

Expressions

AssignmentOperator

extend enum AssignmentOperator {
    "||=" | "&&=" | "??="
}

• AssignmentExpression node has short-circuiting behavior if the operator property is any of "||=","&&=", and "??=".
• See Logical Assignment Operators for details.