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frontend/node_modules/@turf/rhumb-distance/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2017 TurfJS
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

frontend/node_modules/@turf/rhumb-distance/README.md

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+# @turf/rhumb-distance
+
+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
+
+## rhumbDistance
+
+Calculates the distance along a rhumb line between two [points][1] in degrees, radians,
+miles, or kilometers.
+
+**Parameters**
+
+-   `from` **[Coord][2]** origin point
+-   `to` **[Coord][2]** destination point
+-   `options` **[Object][3]?** Optional parameters
+    -   `options.units` **[string][4]** can be degrees, radians, miles, or kilometers (optional, default `"kilometers"`)
+
+**Examples**
+
+```javascript
+var from = turf.point([-75.343, 39.984]);
+var to = turf.point([-75.534, 39.123]);
+var options = {units: 'miles'};
+
+var distance = turf.rhumbDistance(from, to, options);
+
+//addToMap
+var addToMap = [from, to];
+from.properties.distance = distance;
+to.properties.distance = distance;
+```
+
+Returns **[number][5]** distance between the two points
+
+[1]: https://tools.ietf.org/html/rfc7946#section-3.1.2
+
+[2]: https://tools.ietf.org/html/rfc7946#section-3.1.1
+
+[3]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
+
+[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String
+
+[5]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
+
+<!-- This file is automatically generated. Please don't edit it directly:
+if you find an error, edit the source file (likely index.js), and re-run
+./scripts/generate-readmes in the turf project. -->
+
+---
+
+This module is part of the [Turfjs project](http://turfjs.org/), an open source
+module collection dedicated to geographic algorithms. It is maintained in the
+[Turfjs/turf](https://github.com/Turfjs/turf) repository, where you can create
+PRs and issues.
+
+### Installation
+
+Install this module individually:
+
+```sh
+$ npm install @turf/rhumb-distance
+```
+
+Or install the Turf module that includes it as a function:
+
+```sh
+$ npm install @turf/turf
+```

frontend/node_modules/@turf/rhumb-distance/dist/es/index.js

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+// https://en.wikipedia.org/wiki/Rhumb_line
+import { convertLength, earthRadius } from "@turf/helpers";
+import { getCoord } from "@turf/invariant";
+/**
+ * Calculates the distance along a rhumb line between two {@link Point|points} in degrees, radians,
+ * miles, or kilometers.
+ *
+ * @name rhumbDistance
+ * @param {Coord} from origin point
+ * @param {Coord} to destination point
+ * @param {Object} [options] Optional parameters
+ * @param {string} [options.units="kilometers"] can be degrees, radians, miles, or kilometers
+ * @returns {number} distance between the two points
+ * @example
+ * var from = turf.point([-75.343, 39.984]);
+ * var to = turf.point([-75.534, 39.123]);
+ * var options = {units: 'miles'};
+ *
+ * var distance = turf.rhumbDistance(from, to, options);
+ *
+ * //addToMap
+ * var addToMap = [from, to];
+ * from.properties.distance = distance;
+ * to.properties.distance = distance;
+ */
+function rhumbDistance(from, to, options) {
+    if (options === void 0) { options = {}; }
+    var origin = getCoord(from);
+    var destination = getCoord(to);
+    // compensate the crossing of the 180th meridian (https://macwright.org/2016/09/26/the-180th-meridian.html)
+    // solution from https://github.com/mapbox/mapbox-gl-js/issues/3250#issuecomment-294887678
+    destination[0] +=
+        destination[0] - origin[0] > 180
+            ? -360
+            : origin[0] - destination[0] > 180
+                ? 360
+                : 0;
+    var distanceInMeters = calculateRhumbDistance(origin, destination);
+    var distance = convertLength(distanceInMeters, "meters", options.units);
+    return distance;
+}
+/**
+ * Returns the distance travelling from ‘this’ point to destination point along a rhumb line.
+ * Adapted from Geodesy: https://github.com/chrisveness/geodesy/blob/master/latlon-spherical.js
+ *
+ * @private
+ * @param   {Array<number>} origin point.
+ * @param   {Array<number>} destination point.
+ * @param   {number} [radius=6371e3] - (Mean) radius of earth (defaults to radius in metres).
+ * @returns {number} Distance in km between this point and destination point (same units as radius).
+ *
+ * @example
+ *     var p1 = new LatLon(51.127, 1.338);
+ *     var p2 = new LatLon(50.964, 1.853);
+ *     var d = p1.distanceTo(p2); // 40.31 km
+ */
+function calculateRhumbDistance(origin, destination, radius) {
+    // φ => phi
+    // λ => lambda
+    // ψ => psi
+    // Δ => Delta
+    // δ => delta
+    // θ => theta
+    radius = radius === undefined ? earthRadius : Number(radius);
+    // see www.edwilliams.org/avform.htm#Rhumb
+    var R = radius;
+    var phi1 = (origin[1] * Math.PI) / 180;
+    var phi2 = (destination[1] * Math.PI) / 180;
+    var DeltaPhi = phi2 - phi1;
+    var DeltaLambda = (Math.abs(destination[0] - origin[0]) * Math.PI) / 180;
+    // if dLon over 180° take shorter rhumb line across the anti-meridian:
+    if (DeltaLambda > Math.PI) {
+        DeltaLambda -= 2 * Math.PI;
+    }
+    // on Mercator projection, longitude distances shrink by latitude; q is the 'stretch factor'
+    // q becomes ill-conditioned along E-W line (0/0); use empirical tolerance to avoid it
+    var DeltaPsi = Math.log(Math.tan(phi2 / 2 + Math.PI / 4) / Math.tan(phi1 / 2 + Math.PI / 4));
+    var q = Math.abs(DeltaPsi) > 10e-12 ? DeltaPhi / DeltaPsi : Math.cos(phi1);
+    // distance is pythagoras on 'stretched' Mercator projection
+    var delta = Math.sqrt(DeltaPhi * DeltaPhi + q * q * DeltaLambda * DeltaLambda); // angular distance in radians
+    var dist = delta * R;
+    return dist;
+}
+export default rhumbDistance;

frontend/node_modules/@turf/rhumb-distance/dist/es/package.json

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+{"type":"module"}

frontend/node_modules/@turf/rhumb-distance/dist/js/index.d.ts

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+import { Coord, Units } from "@turf/helpers";
+/**
+ * Calculates the distance along a rhumb line between two {@link Point|points} in degrees, radians,
+ * miles, or kilometers.
+ *
+ * @name rhumbDistance
+ * @param {Coord} from origin point
+ * @param {Coord} to destination point
+ * @param {Object} [options] Optional parameters
+ * @param {string} [options.units="kilometers"] can be degrees, radians, miles, or kilometers
+ * @returns {number} distance between the two points
+ * @example
+ * var from = turf.point([-75.343, 39.984]);
+ * var to = turf.point([-75.534, 39.123]);
+ * var options = {units: 'miles'};
+ *
+ * var distance = turf.rhumbDistance(from, to, options);
+ *
+ * //addToMap
+ * var addToMap = [from, to];
+ * from.properties.distance = distance;
+ * to.properties.distance = distance;
+ */
+declare function rhumbDistance(from: Coord, to: Coord, options?: {
+    units?: Units;
+}): number;
+export default rhumbDistance;

frontend/node_modules/@turf/rhumb-distance/dist/js/index.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+// https://en.wikipedia.org/wiki/Rhumb_line
+var helpers_1 = require("@turf/helpers");
+var invariant_1 = require("@turf/invariant");
+/**
+ * Calculates the distance along a rhumb line between two {@link Point|points} in degrees, radians,
+ * miles, or kilometers.
+ *
+ * @name rhumbDistance
+ * @param {Coord} from origin point
+ * @param {Coord} to destination point
+ * @param {Object} [options] Optional parameters
+ * @param {string} [options.units="kilometers"] can be degrees, radians, miles, or kilometers
+ * @returns {number} distance between the two points
+ * @example
+ * var from = turf.point([-75.343, 39.984]);
+ * var to = turf.point([-75.534, 39.123]);
+ * var options = {units: 'miles'};
+ *
+ * var distance = turf.rhumbDistance(from, to, options);
+ *
+ * //addToMap
+ * var addToMap = [from, to];
+ * from.properties.distance = distance;
+ * to.properties.distance = distance;
+ */
+function rhumbDistance(from, to, options) {
+    if (options === void 0) { options = {}; }
+    var origin = invariant_1.getCoord(from);
+    var destination = invariant_1.getCoord(to);
+    // compensate the crossing of the 180th meridian (https://macwright.org/2016/09/26/the-180th-meridian.html)
+    // solution from https://github.com/mapbox/mapbox-gl-js/issues/3250#issuecomment-294887678
+    destination[0] +=
+        destination[0] - origin[0] > 180
+            ? -360
+            : origin[0] - destination[0] > 180
+                ? 360
+                : 0;
+    var distanceInMeters = calculateRhumbDistance(origin, destination);
+    var distance = helpers_1.convertLength(distanceInMeters, "meters", options.units);
+    return distance;
+}
+/**
+ * Returns the distance travelling from ‘this’ point to destination point along a rhumb line.
+ * Adapted from Geodesy: https://github.com/chrisveness/geodesy/blob/master/latlon-spherical.js
+ *
+ * @private
+ * @param   {Array<number>} origin point.
+ * @param   {Array<number>} destination point.
+ * @param   {number} [radius=6371e3] - (Mean) radius of earth (defaults to radius in metres).
+ * @returns {number} Distance in km between this point and destination point (same units as radius).
+ *
+ * @example
+ *     var p1 = new LatLon(51.127, 1.338);
+ *     var p2 = new LatLon(50.964, 1.853);
+ *     var d = p1.distanceTo(p2); // 40.31 km
+ */
+function calculateRhumbDistance(origin, destination, radius) {
+    // φ => phi
+    // λ => lambda
+    // ψ => psi
+    // Δ => Delta
+    // δ => delta
+    // θ => theta
+    radius = radius === undefined ? helpers_1.earthRadius : Number(radius);
+    // see www.edwilliams.org/avform.htm#Rhumb
+    var R = radius;
+    var phi1 = (origin[1] * Math.PI) / 180;
+    var phi2 = (destination[1] * Math.PI) / 180;
+    var DeltaPhi = phi2 - phi1;
+    var DeltaLambda = (Math.abs(destination[0] - origin[0]) * Math.PI) / 180;
+    // if dLon over 180° take shorter rhumb line across the anti-meridian:
+    if (DeltaLambda > Math.PI) {
+        DeltaLambda -= 2 * Math.PI;
+    }
+    // on Mercator projection, longitude distances shrink by latitude; q is the 'stretch factor'
+    // q becomes ill-conditioned along E-W line (0/0); use empirical tolerance to avoid it
+    var DeltaPsi = Math.log(Math.tan(phi2 / 2 + Math.PI / 4) / Math.tan(phi1 / 2 + Math.PI / 4));
+    var q = Math.abs(DeltaPsi) > 10e-12 ? DeltaPhi / DeltaPsi : Math.cos(phi1);
+    // distance is pythagoras on 'stretched' Mercator projection
+    var delta = Math.sqrt(DeltaPhi * DeltaPhi + q * q * DeltaLambda * DeltaLambda); // angular distance in radians
+    var dist = delta * R;
+    return dist;
+}
+exports.default = rhumbDistance;

frontend/node_modules/@turf/rhumb-distance/package.json

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+{
+  "name": "@turf/rhumb-distance",
+  "version": "6.5.0",
+  "description": "turf rhumb-distance module",
+  "author": "Turf Authors",
+  "contributors": [
+    "Chris Veness <@chrisveness>",
+    "Stefano Borghi <@stebogit>",
+    "Denis Carriere <@DenisCarriere>"
+  ],
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/Turfjs/turf/issues"
+  },
+  "homepage": "https://github.com/Turfjs/turf",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/Turfjs/turf.git"
+  },
+  "funding": "https://opencollective.com/turf",
+  "publishConfig": {
+    "access": "public"
+  },
+  "keywords": [
+    "turf",
+    "distance",
+    "rhumb line",
+    "rhumb",
+    "loxodrome",
+    "miles",
+    "km"
+  ],
+  "main": "dist/js/index.js",
+  "module": "dist/es/index.js",
+  "exports": {
+    "./package.json": "./package.json",
+    ".": {
+      "import": "./dist/es/index.js",
+      "require": "./dist/js/index.js"
+    }
+  },
+  "types": "dist/js/index.d.ts",
+  "sideEffects": false,
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "bench": "ts-node bench.js",
+    "build": "npm-run-all build:*",
+    "build:es": "tsc --outDir dist/es --module esnext --declaration false && echo '{\"type\":\"module\"}' > dist/es/package.json",
+    "build:js": "tsc",
+    "docs": "node ../../scripts/generate-readmes",
+    "test": "npm-run-all test:*",
+    "test:tape": "ts-node -r esm test.js"
+  },
+  "devDependencies": {
+    "@turf/distance": "^6.5.0",
+    "@types/tape": "*",
+    "benchmark": "*",
+    "load-json-file": "*",
+    "npm-run-all": "*",
+    "tape": "*",
+    "ts-node": "*",
+    "tslint": "*",
+    "typescript": "*",
+    "write-json-file": "*"
+  },
+  "dependencies": {
+    "@turf/helpers": "^6.5.0",
+    "@turf/invariant": "^6.5.0"
+  },
+  "gitHead": "5375941072b90d489389db22b43bfe809d5e451e"
+}