Migrate from JavaScript to TypeScript with Vite + Vitest (#160)

* Migrate from JavaScript to TypeScript with Vite + Vitest

- Convert all JavaScript source files to TypeScript with proper typing
- Replace Rollup build system with Vite for faster development
- Replace tape test runner with Vitest for modern testing
- Bundle TypeScript declarations into single file
- Update demo to work with new build system
- Maintain backward compatibility with existing API

New build outputs:
- dist/martinez.js (ES module)
- dist/martinez.cjs (CommonJS)
- dist/index.d.ts (bundled TypeScript declarations)

Scripts:
- npm run build: Build library
- npm run test: Run tests with Vitest
- npm run dev: Start dev server with demo
- npm run typecheck: Type checking

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Replace ESLint with oxlint for faster linting

- Remove ESLint, TypeScript ESLint plugins, and related dependencies
- Add oxlint (Rust-based linter) for significantly faster performance
- Configure oxlint with TypeScript support and reasonable rule set
- Maintain code quality standards while improving build speed

Performance improvement:
- ESLint: ~2-3 seconds on 18 files
- oxlint: 9ms on 18 files with 96 rules using 8 threads

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Fix TypeScript build errors in core library files

TypeScript fixes:
- Fix BBox type from interface to tuple [number, number, number, number]
- Fix connectEdges function call signature (remove unused operation parameter)
- Fix variable type conflicts in connect_edges.ts (separate tmpEvent and tmpPos)
- Add proper null assertion operators for guaranteed non-null properties

Build verification:
- ✅ Build completes successfully: dist/martinez.js, dist/martinez.cjs, dist/index.d.ts
- ✅ All 22 tests pass with Vitest
- ✅ Library functions correctly
- ✅ Main TypeScript errors resolved

Remaining errors are only in debug utilities and test files, not in core library.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Convert all remaining tests from tape to Vitest

✅ Successfully converted 7 additional test files:
- compute_fields.test.js → compute_fields.test.ts (1 test)
- featureTypes.test.js → featureTypes.test.ts (16 tests)
- genericTestCases.test.js → genericTestCases.test.ts (27 tests)
- index.test.js → index.test.ts (14 tests)
- segment_intersection.test.js → segment_intersection.test.ts (11 tests)
- sweep_event.test.js → sweep_event.test.ts (6 tests)
- sweep_line.test.js → sweep_line.test.ts (1 test)

🎯 Test migration results:
- **Before**: 22 tests passing (4 converted files)
- **After**: 98 tests passing (11 converted files)
- **Improvement**: 76 additional tests (+345% increase)

🔧 Key changes:
- Converted complex nested tape test structures to proper Vitest describe/it blocks
- Updated all assertions from tape to Vitest expect syntax
- Added TypeScript support with proper type assertions
- Added glob dependency for file system test discovery
- Fixed import statements for modern package versions
- Maintained all original test logic and fixtures

All tests now run with Vitest and provide comprehensive coverage
of the martinez polygon clipping library functionality.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Update vite.config.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update test/compare_segments.test.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update test/genericTestCases.test.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update test/genericTestCases.test.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Tests, benchmarks

* New demo

* Nojekyll

* Packages

* More tests from #156

* npmrc

* Stricter ts

* Fixed the queue

* Fixed the demo

* Bumped the version

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

.eslintrc

@@ -0,0 +1 @@
+registry=https://registry.npmjs.org/

.npmrc

@@ -0,0 +1,63 @@
+import { describe, bench } from 'vitest';
+import { readFileSync } from 'fs';
+import { join } from 'path';
+import jstsUnion from '@turf/union';
+import * as martinez from '../index';
+
+/**
+ * Benchmark Results
+ *
+ * Previous results with Benchmark.js:
+ * Hole_Hole x 13,345 ops/sec ±2.13% (91 runs sampled)
+ * Hole_Hole - JSTS x 1,724 ops/sec ±4.80% (87 runs sampled)
+ * Asia x 6.32 ops/sec ±3.16% (20 runs sampled)
+ * Asia - JSTS x 6.62 ops/sec ±2.74% (21 runs sampled)
+ */
+
+// Helper to load JSON files
+const loadJSON = (filePath: string) => JSON.parse(readFileSync(filePath, 'utf-8'));
+
+// Load test fixtures
+const hole_hole = loadJSON(join(__dirname, '../test/fixtures/hole_hole.geojson'));
+const asia = loadJSON(join(__dirname, '../test/fixtures/asia.geojson'));
+const unionPoly = loadJSON(join(__dirname, '../test/fixtures/asia_unionPoly.geojson'));
+const states = loadJSON(join(__dirname, '../test/fixtures/states_source.geojson'));
+
+describe('Hole_Hole union', () => {
+  bench('Martinez', () => {
+    martinez.union(
+      hole_hole.features[0].geometry.coordinates,
+      hole_hole.features[1].geometry.coordinates
+    );
+  });
+
+  bench('JSTS', () => {
+    jstsUnion(hole_hole.features[0], hole_hole.features[1]);
+  });
+});
+
+describe('Asia union', () => {
+  bench('Martinez', () => {
+    martinez.union(
+      asia.features[0].geometry.coordinates,
+      unionPoly.geometry.coordinates
+    );
+  });
+
+  bench('JSTS', () => {
+    jstsUnion(asia.features[0], unionPoly);
+  });
+});
+
+describe('States clip', () => {
+  bench('Martinez', () => {
+    martinez.union(
+      states.features[0].geometry.coordinates,
+      states.features[1].geometry.coordinates
+    );
+  });
+
+  bench('JSTS', () => {
+    jstsUnion(states.features[0], states.features[1]);
+  });
+});