test-repo/changelog_unreleased/javascript/15485.md

Support new syntaxes supported by Babel 7.23.0 (#15485, #15486, #15487, #15488 by @sosukesuzuki)

We support new JS syntax supported by Babel 7.23.0!

Source Phase Imports

Please see https://github.com/tc39/proposal-source-phase-imports for more details.

import source x from "mod";

Deferred Import Evaluation

Please see https://github.com/tc39/proposal-defer-import-eval for more details.

import defer * as ns from "mod";

Optional Chaining Assignments

Please see https://github.com/tc39/proposal-optional-chaining-assignment for more details.

maybeObj?.prop1 = value;