Add typings for geopoint (#43158)

This adds a type definition for the geopoint npm package

types/geopoint/geopoint-tests.ts

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+import GeoPoint = require("geopoint");
+
+function test() {
+    const geopoint: GeoPoint = new GeoPoint(2.33, 4.66, false);
+
+    const boundingCoords: [GeoPoint, GeoPoint] = geopoint.boundingCoordinates(5, 12, true);
+
+    const distanceTo: number = geopoint.distanceTo(new GeoPoint(4.20, 6.9));
+
+    const latitude: number = geopoint.latitude(false);
+
+    const longitude: number = geopoint.longitude(true);
+
+    const degToRad: number = GeoPoint.degreesToRadians(1);
+
+    const kmToMiles: number = GeoPoint.kilometersToMiles(13.33333);
+
+    const milesToKm: number = GeoPoint.milesToKilometers(666);
+
+    const radToDeg: number = GeoPoint.radiansToDegrees(3);
+}

types/geopoint/index.d.ts

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+// Type definitions for geopoint 1.0
+// Project: https://github.com/davidwood/node-geopoint
+// Definitions by: Varg Industries <https://github.com/vargind>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+export = GeoPoint;
+
+declare class GeoPoint {
+    constructor(lat: number, lon: number, inRadians?: boolean);
+
+    boundingCoordinates(distance: number, radius: number, inKilometers?: boolean): [GeoPoint, GeoPoint];
+
+    distanceTo(point: GeoPoint, inKilometers?: boolean): number;
+
+    latitude(inRadians?: boolean): number;
+
+    longitude(inRadians?: boolean): number;
+
+    static degreesToRadians(value: number): number;
+
+    static kilometersToMiles(value: number): number;
+
+    static milesToKilometers(value: number): number;
+
+    static radiansToDegrees(value: number): number;
+}

types/geopoint/tsconfig.json

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+{
+    "compilerOptions": {
+        "module": "commonjs",
+        "lib": [
+            "es6"
+        ],
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
+        "baseUrl": "../",
+        "typeRoots": [
+            "../"
+        ],
+        "types": [],
+        "noEmit": true,
+        "forceConsistentCasingInFileNames": true
+    },
+    "files": [
+        "index.d.ts",
+        "geopoint-tests.ts"
+    ]
+}

types/geopoint/tslint.json

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+{ "extends": "dtslint/dt.json" }