Modernize dev deps, switch to ESM & GHA

.github/workflows/node.yml

@@ -0,0 +1,19 @@
+name: Node
+on: [push, pull_request]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Setup Node
+      uses: actions/setup-node@v4
+      with:
+        node-version: 22
+
+    - name: Install dependencies
+      run: npm ci
+
+    - name: Run tests
+      run: npm test

LICENSE

@@ -1,6 +1,6 @@
 ISC License
 
-Copyright (c) 2016, Mapbox
+Copyright (c) 2025, Mapbox
 
 Permission to use, copy, modify, and/or distribute this software for any purpose
 with or without fee is hereby granted, provided that the above copyright notice

README.md

@@ -11,8 +11,10 @@ A very fast **2D concave hull** algorithm in JavaScript (generates a general out
 ### Usage
 
 ```js
-var points = [[10, 20], [30, 12.5], ...];
-var polygon = concaveman(points);
+import concaveman from 'concaveman';
+
+const points = [[10, 20], [30, 12.5], ...];
+const polygon = concaveman(points);
 ```
 
 Signature: `concaveman(points[, concavity = 2, lengthThreshold = 0])`
@@ -41,11 +43,10 @@ are available through `npm install --save @types/concaveman`.
 
 ### Dependencies
 
-- [monotone-convex-hull-2d](https://github.com/mikolalysenko/monotone-convex-hull-2d) for the convex hull algorithm
 - [rbush](https://github.com/mourner/rbush) for point indexing
 - [tinyqueue](https://github.com/mourner/tinyqueue) as a priority queue
 - [point-in-polygon](https://github.com/substack/point-in-polygon) for point in polygon queries
-- [robust-orientation](https://github.com/mikolalysenko/robust-orientation) for 3-point orientation tests
+- [robust-predicates](https://github.com/mourner/robust-predicates) for 3-point orientation tests
 
 ### C++ Port
 

eslint.config.js

@@ -0,0 +1,10 @@
+import config from 'eslint-config-mourner';
+
+export default [
+    ...config,
+    {
+        languageOptions: {
+            ecmaVersion: 'latest'
+        }
+    }
+];