Change

• 8524c24 Update @types/unist
  migrate: update too
• 0492eab Change to require Node.js 16
  migrate: update too
• 798ca2a Change to use export map
  migrate: don’t use private APIs

Type

• 66e15b8 Change to improve type inferral
  migrate: use a type tree as input and you’re golden

Full Changelog: 3.1.3...4.0.0