Upgrade: @eslint/eslintrc@1.0.0

[mdjermanovic]

Remaining steps:

• import environments from the @eslint/eslintrc API.
• update package.json with the new version of @eslint/eslintrc.

Prerequisites checklist

• I have read the contributing guidelines.

What is the purpose of this pull request? (put an "X" next to an item)

[ ] Documentation update
[ ] Bug fix (template)
[ ] New rule (template)
[ ] Changes an existing rule (template)
[ ] Add autofixing to a rule
[ ] Add a CLI option
[ ] Add something to the core
[x] Other, please explain:

Updates ESLint to use @eslint/eslintrc version with the "exports" field in package.json (eslint/eslintrc#39), presumably in v8.0.0.

What changes did you make? (Give an overview)

• Updated modules that used deep imports such as require("@eslint/eslintrc/lib/shared/config-ops") to use the Legacy API from the main (and only) entry point.
• Removed unused functions from in-memory-fs.

Is there anything you'd like reviewers to focus on?

• Was there a reason we were using require("@eslint/eslintrc/lib/shared/config-ops") and others instead of Legacy?
• Fixing in-memory-fs would be a bit more complicated and untestable since we're not using it anymore (aside from one function defineInMemoryFs), so I just removed the unused functions.
• Environments are imported using a "hack" with absolute paths, in order to test other changes. This will be fixed when we update Breaking: Switch to ESM (fixes #35) eslintrc#39. fixed

[mdjermanovic]

Browser Test is failing:

ERROR in ./node_modules/resolve-from/index.js 5:15-32
Module not found: Error: Can't resolve 'module' in '/home/runner/work/eslint/eslint/node_modules/resolve-from'
 @ ./node_modules/import-fresh/index.js 5:20-43
 @ ./node_modules/@eslint/eslintrc/dist/eslintrc.cjs 7:18-41
 @ ./lib/linter/linter.js 23:4-31

ERROR in ./node_modules/resolve-from/index.js 7:11-24
Module not found: Error: Can't resolve 'fs' in '/home/runner/work/eslint/eslint/node_modules/resolve-from'
 @ ./node_modules/import-fresh/index.js 5:20-43
 @ ./node_modules/@eslint/eslintrc/dist/eslintrc.cjs 7:18-41
 @ ./lib/linter/linter.js 23:4-31

ERROR in ./node_modules/@eslint/eslintrc/dist/eslintrc.cjs 5:9-22
Module not found: Error: Can't resolve 'fs' in '/home/runner/work/eslint/eslint/node_modules/@eslint/eslintrc/dist'
 @ ./lib/linter/linter.js 23:4-31

ERROR in ./node_modules/@eslint/eslintrc/dist/eslintrc.cjs 11:13-30
Module not found: Error: Can't resolve 'module' in '/home/runner/work/eslint/eslint/node_modules/@eslint/eslintrc/dist'
 @ ./lib/linter/linter.js 23:4-31

webpack compiled with 4 errors

[nzakas]

Opened eslint/eslintrc#51

[nzakas]

Published @eslint/eslintrc v1.0.0: https://github.com/eslint/eslintrc/releases/tag/v1.0.0

[nzakas]

LGTM