* Chore: Update devDeps.

* Chore: Lint according to latest config

* Breaking: Switch to ESM; also adds eslint-plugin-jsdoc for linter

* Fix: Sync with eslint-visitor-keys, including fixing cjs linting

* Update package.json

Co-authored-by: Nicholas C. Zakas <nicholas@humanwhocodes.com>

* Test: Drop Node 13, 10, 8 tests, and add 16, 12.22.0

* Docs: Add comment to explain shelljs command

* Refactor: Apply new API and ESM changes

* Chore: Update devDeps.

* Docs: Update espree usage in README

* Test: Add CJS file

* Update README.md

Co-authored-by: Nicholas C. Zakas <nicholas@humanwhocodes.com>

* Fix: Avoid named imports of CJS modules

* Fix: For browser compatibility, avoid package.json file-reading attempt

* Refactor: Drop `fs` from Rollup now that not in use

* Fix: Stop re-exporting Scope child classes and only export `Scope`

* Fix: Re-export Reference, Definition, and PatternVisitor

* Update Makefile.js

Co-authored-by: Milos Djermanovic <milos.djermanovic@gmail.com>

* Update tests/commonjs.cjs

Co-authored-by: Brandon Mills <btmills@users.noreply.github.com>

Co-authored-by: Nicholas C. Zakas <nicholas@humanwhocodes.com>
Co-authored-by: Milos Djermanovic <milos.djermanovic@gmail.com>
Co-authored-by: Brandon Mills <btmills@users.noreply.github.com>