fix: fix package resolution for native esm

[salza80]

Fix native Node ESM package resolution

Summary

This adds an explicit exports map so native Node ESM resolves erroz to the ESM build instead of falling back to the UMD/CommonJS main entry.
This fixes error:
SyntaxError: The requested module 'erroz' does not provide an export named 'erroz'

The package now maps:
import to dist/erroz.mjs
require to dist/erroz.umd.js
types to dist/main.d.ts

[Copilot]

Pull request overview

This PR aims to ensure the erroz package resolves correctly in native Node ESM (including named exports) by adding an explicit exports map and a CI-style verification script, along with a patch version bump and changelog entry.

Changes:

• Add package.json#exports mappings for import/require/types to fix native Node ESM resolution.
• Add a Node script to verify ESM named imports and CommonJS require against the built package.
• Bump version to 2.0.2 and document the change in CHANGELOG.md.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
scripts/verify-package-exports.mjs	Adds an automated runtime check validating ESM/CJS consumption of the package entrypoint.
package.json	Introduces an exports map and wires the export verification into npm test.
package-lock.json	Updates lockfile metadata for the version bump.
CHANGELOG.md	Documents the 2.0.2 change related to native ESM exports.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated no new comments.

[jhnns]

Thank you for your effort @salza80
I decided to switch erroz to our template repository: #15

It's now published as ESM only..

[salza80]

Thank you for your effort @salza80 I decided to switch erroz to our template repository: #15

It's now published as ESM only..

Perfect! Tested it on my konsens branch - all working