fix: restore map SDK externals in build scripts, bump to v0.4.2

[DuncanAForbes]

PR #15 (version bump) accidentally reverted the build script changes from PR #14 — the --external flags for optional map SDKs were lost, causing every build to fail.

This restores:

• --external mapbox-gl --external @maptiler/sdk --external maplibre-gl --external radar-sdk-js in build/dev scripts
• Optional peerDependencies for all map SDKs
• Version bump to 0.4.2 (v0.4.1 tag was already used)

Last one — merge and I'll create the v0.4.2 release.

Summary by CodeRabbit

• Chores
  • Patched version to 0.4.2
  • Optimised build configuration to support flexible map library integration, allowing optional selection of mapping libraries to suit your project needs.

[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

Walkthrough

Version bumped from 0.4.1 to 0.4.2. Build and dev scripts updated to treat mapbox-gl, @maptiler/sdk, maplibre-gl, and radar-sdk-js as external dependencies in tsup configuration. These packages added to peerDependencies with version ranges and marked as optional via peerDependenciesMeta.

Changes

Cohort / File(s)	Summary
Dependency and Build Configuration package.json	Version incremented to 0.4.2. Build and dev scripts expanded with external dependency declarations for mapping and location services libraries. Four new packages added to peerDependencies with optional status in peerDependenciesMeta, whilst lucide-react remains non-optional.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A version hops up, from point-four-one to two,
External friends dance in the build scripts anew,
Peer dependencies shuffle, optional and free,
Maps and location services, wild as can be!
One tiny change, yet ecosystems align—
This rabbit's delighted by dependency design. 🗺️

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately reflects the main changes: restoring map SDK externals in build scripts and bumping the version to 0.4.2, matching the PR's primary objectives.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/restore-externals

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