build(deps-dev): bump typescript to 6.0.3 and modernise module resolution

[Eliav2]

Supersedes #199.

Why #199 cannot be merged on its own

The bump alone fails type-check:

tsconfig.json(16,25): error TS5107: Option 'moduleResolution=node10' is deprecated
and will stop functioning in TypeScript 7.0. Specify compilerOption
'"ignoreDeprecations": "6.0"' to silence this error.

Dependabot cannot make the tsconfig change that goes with it, so its PR is red by construction.

What this does instead

"ignoreDeprecations": "6.0" would silence it and hand the identical error to TypeScript 7. This moves both tsconfigs to module: esnext + moduleResolution: bundler instead, which is simply an accurate description of the project since #204: Vite does the bundling, and the published package resolves through an exports map rather than node10 directory walking.

Risk

None to the shipped artifact. tsc no longer emits any JavaScript here, only declarations through vite-plugin-dts.

Confirmed rather than assumed: built main and this branch and diffed lib/.

• no differences outside sourcemaps
• index.d.ts byte identical

Verified on typescript 6.0.3

root type-check	clean
examples tsc --noEmit	clean
lint	0 errors, 23 pre-existing warnings
library tests	53 passed
demo tests	2 passed
build	ESM + CJS + UMD, flat 117-line .d.ts
attw	green on node10 / node16-CJS / node16-ESM / bundler
demo build	passes

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Updated development tooling to support the latest TypeScript standards.
  • Modernized module generation and resolution settings for improved compatibility with current bundlers.
  • No user-facing features or behavior changes were introduced.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e328c85a-a0c9-41c2-893d-4081051a206b

📥 Commits

Reviewing files that changed from the base of the PR and between 166ab1e and 8a41acf.

⛔ Files ignored due to path filters (1)

• pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml

📒 Files selected for processing (3)

• examples/package.json
• package.json
• tsconfig.json

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📝 Walkthrough

Walkthrough

The project updates TypeScript development dependencies to ^6.0.3. The compiler now emits ESNext modules and uses Bundler module resolution.

Changes

TypeScript configuration

Layer / File(s)	Summary
TypeScript upgrade and module configuration package.json, examples/package.json, tsconfig.json	The project and examples package update TypeScript from ^5.9.3 to ^6.0.3. The compiler changes from CommonJS and Node resolution to ESNext and Bundler resolution.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• Eliav2/react-xarrows#204: Updates overlapping TypeScript and module configuration files for modern packaging.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the TypeScript upgrade and module resolution changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch build/typescript-6

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