added typescript support

package.json

@@ -5,16 +5,18 @@
   "main": "dist/geo-extent.cjs",
   "module": "dist/geo-extent.mjs",
   "type": "module",
+  "types": "./types.d.ts",
   "files": [
     "src/geo-extent.js",
     "dist/geo-extent.cjs",
     "dist/geo-extent.mjs"
   ],
   "scripts": {
     "build": "cp ./src/geo-extent.js ./dist/geo-extent.mjs && npx babel ./src/geo-extent.js --out-file ./dist/geo-extent.cjs --plugins=@babel/plugin-transform-modules-commonjs",
+    "f": "npm run format",
     "format": "npx prettier --arrow-parens=avoid --print-width=120 --trailing-comma=none --write src/*.js test/*.js test/*.mjs",
     "prepublishOnly": "npm run format",
-    "test": "for f in ./test/*; do node $f; done"
+    "test": "for f in ./test/*; do echo \"node $f\" && node $f && echo \"npx ts-node $f\" && npx ts-node $f; done"
   },
   "repository": {
     "type": "git",

types.d.ts

@@ -0,0 +1,42 @@
+export type GeoExtent = {
+  // properties
+  bbox: [number, number, number, number];
+  bbox_str: [string, string, string, string];
+  srs: string;
+  xmin: number;
+  xmin_str: string;
+  xmax: number;
+  xmax_str: string;
+  ymin: number;
+  ymin_str: string;
+  ymax: number;
+  ymax_str: string;
+  height: number;
+  height_str: string;
+  width: number;
+  width_str: string;
+  area: number;
+  area_str: string;
+  perimeter: number;
+  perimeter_str: string;
+  center: { x: number, y: number };
+  center_str: { x: string, y: string };
+  bottomLeft: { x: number, y: number };
+  bottomRight: { x: number, y: number };
+  topLeft: { x: number, y: number };
+  topRight: { x: number, y: number };
+  str: string;
+  leafletBounds: [[number, number], [number, number]];
+
+  // functions
+  asEsriJSON: () => { xmin: number, ymin: number, xmax: number, ymax: number, spatialReference: { wkid: string }};
+  asGeoJSON: () => { type: "Feature", geometry: { type: "Polygon", coordinates: [number[]]}};
+  clone: () => GeoExtent;
+  combine: (other: GeoExtent) => GeoExtent;
+  contains: (other: GeoExtent) => GeoExtent;
+  crop: (other: GeoExtent) => GeoExtent;
+  equals: (other: GeoExtent, options?: { digits?: number }) => boolean;
+  overlaps: (other: GeoExtent) => boolean;
+  reproj: ((srs: number, options?: { quiet: false }) => GeoExtent) | ((srs: number, options: { quiet: true }) => (GeoExtent | undefined));
+  unwrap: () => GeoExtent[];
+}