Reviews for Stage 2.7

[guybedford]

Issue to track Stage 2 reviewers feedback.

Spec: https://tc39.es/proposal-esm-phase-imports/

Reviewers:

• [ ] @nicolo-ribaudo
• [ ] TBD

Editors:

• [ ] @bakkot
• [ ] @syg
• [ ] @michaelficarra

[ljharb]

to clarify, reviewers are within stage 2, they're just a prerequisite for stage 2.7.