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frontend/node_modules/@turf/nearest-point-on-line/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/nearest-point-on-line/README.md

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+# @turf/nearest-point-on-line
+
+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
+
+## nearestPointOnLine
+
+Takes a [Point][1] and a [LineString][2] and calculates the closest Point on the (Multi)LineString.
+
+**Parameters**
+
+-   `lines` **([Geometry][3] \| [Feature][4]&lt;([LineString][5] \| [MultiLineString][6])>)** lines to snap to
+-   `pt` **([Geometry][3] \| [Feature][4]&lt;[Point][7]> | [Array][8]&lt;[number][9]>)** point to snap from
+-   `options` **[Object][10]** Optional parameters (optional, default `{}`)
+    -   `options.units` **[string][11]** can be degrees, radians, miles, or kilometers (optional, default `'kilometers'`)
+
+**Examples**
+
+```javascript
+var line = turf.lineString([
+    [-77.031669, 38.878605],
+    [-77.029609, 38.881946],
+    [-77.020339, 38.884084],
+    [-77.025661, 38.885821],
+    [-77.021884, 38.889563],
+    [-77.019824, 38.892368]
+]);
+var pt = turf.point([-77.037076, 38.884017]);
+
+var snapped = turf.nearestPointOnLine(line, pt, {units: 'miles'});
+
+//addToMap
+var addToMap = [line, pt, snapped];
+snapped.properties['marker-color'] = '#00f';
+```
+
+Returns **[Feature][4]&lt;[Point][7]>** closest point on the `line` to `point`. The properties object will contain three values: `index`: closest point was found on nth line part, `dist`: distance between pt and the closest point, `location`: distance along the line between start and the closest point.
+
+[1]: https://tools.ietf.org/html/rfc7946#section-3.1.2
+
+[2]: https://tools.ietf.org/html/rfc7946#section-3.1.4
+
+[3]: https://tools.ietf.org/html/rfc7946#section-3.1
+
+[4]: https://tools.ietf.org/html/rfc7946#section-3.2
+
+[5]: https://tools.ietf.org/html/rfc7946#section-3.1.4
+
+[6]: https://tools.ietf.org/html/rfc7946#section-3.1.5
+
+[7]: https://tools.ietf.org/html/rfc7946#section-3.1.2
+
+[8]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array
+
+[9]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
+
+[10]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
+
+[11]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String
+
+<!-- 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/nearest-point-on-line
+```
+
+Or install the Turf module that includes it as a function:
+
+```sh
+$ npm install @turf/turf
+```

frontend/node_modules/@turf/nearest-point-on-line/dist/es/index.js

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+import bearing from "@turf/bearing";
+import distance from "@turf/distance";
+import destination from "@turf/destination";
+import lineIntersects from "@turf/line-intersect";
+import { flattenEach } from "@turf/meta";
+import { point, lineString, } from "@turf/helpers";
+import { getCoords } from "@turf/invariant";
+/**
+ * Takes a {@link Point} and a {@link LineString} and calculates the closest Point on the (Multi)LineString.
+ *
+ * @name nearestPointOnLine
+ * @param {Geometry|Feature<LineString|MultiLineString>} lines lines to snap to
+ * @param {Geometry|Feature<Point>|number[]} pt point to snap from
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, or kilometers
+ * @returns {Feature<Point>} closest point on the `line` to `point`. The properties object will contain three values: `index`: closest point was found on nth line part, `dist`: distance between pt and the closest point, `location`: distance along the line between start and the closest point.
+ * @example
+ * var line = turf.lineString([
+ *     [-77.031669, 38.878605],
+ *     [-77.029609, 38.881946],
+ *     [-77.020339, 38.884084],
+ *     [-77.025661, 38.885821],
+ *     [-77.021884, 38.889563],
+ *     [-77.019824, 38.892368]
+ * ]);
+ * var pt = turf.point([-77.037076, 38.884017]);
+ *
+ * var snapped = turf.nearestPointOnLine(line, pt, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [line, pt, snapped];
+ * snapped.properties['marker-color'] = '#00f';
+ */
+function nearestPointOnLine(lines, pt, options) {
+    if (options === void 0) { options = {}; }
+    var closestPt = point([Infinity, Infinity], {
+        dist: Infinity,
+    });
+    var length = 0.0;
+    flattenEach(lines, function (line) {
+        var coords = getCoords(line);
+        for (var i = 0; i < coords.length - 1; i++) {
+            //start
+            var start = point(coords[i]);
+            start.properties.dist = distance(pt, start, options);
+            //stop
+            var stop_1 = point(coords[i + 1]);
+            stop_1.properties.dist = distance(pt, stop_1, options);
+            // sectionLength
+            var sectionLength = distance(start, stop_1, options);
+            //perpendicular
+            var heightDistance = Math.max(start.properties.dist, stop_1.properties.dist);
+            var direction = bearing(start, stop_1);
+            var perpendicularPt1 = destination(pt, heightDistance, direction + 90, options);
+            var perpendicularPt2 = destination(pt, heightDistance, direction - 90, options);
+            var intersect = lineIntersects(lineString([
+                perpendicularPt1.geometry.coordinates,
+                perpendicularPt2.geometry.coordinates,
+            ]), lineString([start.geometry.coordinates, stop_1.geometry.coordinates]));
+            var intersectPt = null;
+            if (intersect.features.length > 0) {
+                intersectPt = intersect.features[0];
+                intersectPt.properties.dist = distance(pt, intersectPt, options);
+                intersectPt.properties.location =
+                    length + distance(start, intersectPt, options);
+            }
+            if (start.properties.dist < closestPt.properties.dist) {
+                closestPt = start;
+                closestPt.properties.index = i;
+                closestPt.properties.location = length;
+            }
+            if (stop_1.properties.dist < closestPt.properties.dist) {
+                closestPt = stop_1;
+                closestPt.properties.index = i + 1;
+                closestPt.properties.location = length + sectionLength;
+            }
+            if (intersectPt &&
+                intersectPt.properties.dist < closestPt.properties.dist) {
+                closestPt = intersectPt;
+                closestPt.properties.index = i;
+            }
+            // update length
+            length += sectionLength;
+        }
+    });
+    return closestPt;
+}
+export default nearestPointOnLine;

frontend/node_modules/@turf/nearest-point-on-line/dist/es/package.json

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+{"type":"module"}

frontend/node_modules/@turf/nearest-point-on-line/dist/js/index.d.ts

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+import { Feature, Point, LineString, MultiLineString, Coord, Units } from "@turf/helpers";
+export interface NearestPointOnLine extends Feature<Point> {
+    properties: {
+        index?: number;
+        dist?: number;
+        location?: number;
+        [key: string]: any;
+    };
+}
+/**
+ * Takes a {@link Point} and a {@link LineString} and calculates the closest Point on the (Multi)LineString.
+ *
+ * @name nearestPointOnLine
+ * @param {Geometry|Feature<LineString|MultiLineString>} lines lines to snap to
+ * @param {Geometry|Feature<Point>|number[]} pt point to snap from
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, or kilometers
+ * @returns {Feature<Point>} closest point on the `line` to `point`. The properties object will contain three values: `index`: closest point was found on nth line part, `dist`: distance between pt and the closest point, `location`: distance along the line between start and the closest point.
+ * @example
+ * var line = turf.lineString([
+ *     [-77.031669, 38.878605],
+ *     [-77.029609, 38.881946],
+ *     [-77.020339, 38.884084],
+ *     [-77.025661, 38.885821],
+ *     [-77.021884, 38.889563],
+ *     [-77.019824, 38.892368]
+ * ]);
+ * var pt = turf.point([-77.037076, 38.884017]);
+ *
+ * var snapped = turf.nearestPointOnLine(line, pt, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [line, pt, snapped];
+ * snapped.properties['marker-color'] = '#00f';
+ */
+declare function nearestPointOnLine<G extends LineString | MultiLineString>(lines: Feature<G> | G, pt: Coord, options?: {
+    units?: Units;
+}): NearestPointOnLine;
+export default nearestPointOnLine;

frontend/node_modules/@turf/nearest-point-on-line/dist/js/index.js

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+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+var bearing_1 = __importDefault(require("@turf/bearing"));
+var distance_1 = __importDefault(require("@turf/distance"));
+var destination_1 = __importDefault(require("@turf/destination"));
+var line_intersect_1 = __importDefault(require("@turf/line-intersect"));
+var meta_1 = require("@turf/meta");
+var helpers_1 = require("@turf/helpers");
+var invariant_1 = require("@turf/invariant");
+/**
+ * Takes a {@link Point} and a {@link LineString} and calculates the closest Point on the (Multi)LineString.
+ *
+ * @name nearestPointOnLine
+ * @param {Geometry|Feature<LineString|MultiLineString>} lines lines to snap to
+ * @param {Geometry|Feature<Point>|number[]} pt point to snap from
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, or kilometers
+ * @returns {Feature<Point>} closest point on the `line` to `point`. The properties object will contain three values: `index`: closest point was found on nth line part, `dist`: distance between pt and the closest point, `location`: distance along the line between start and the closest point.
+ * @example
+ * var line = turf.lineString([
+ *     [-77.031669, 38.878605],
+ *     [-77.029609, 38.881946],
+ *     [-77.020339, 38.884084],
+ *     [-77.025661, 38.885821],
+ *     [-77.021884, 38.889563],
+ *     [-77.019824, 38.892368]
+ * ]);
+ * var pt = turf.point([-77.037076, 38.884017]);
+ *
+ * var snapped = turf.nearestPointOnLine(line, pt, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [line, pt, snapped];
+ * snapped.properties['marker-color'] = '#00f';
+ */
+function nearestPointOnLine(lines, pt, options) {
+    if (options === void 0) { options = {}; }
+    var closestPt = helpers_1.point([Infinity, Infinity], {
+        dist: Infinity,
+    });
+    var length = 0.0;
+    meta_1.flattenEach(lines, function (line) {
+        var coords = invariant_1.getCoords(line);
+        for (var i = 0; i < coords.length - 1; i++) {
+            //start
+            var start = helpers_1.point(coords[i]);
+            start.properties.dist = distance_1.default(pt, start, options);
+            //stop
+            var stop_1 = helpers_1.point(coords[i + 1]);
+            stop_1.properties.dist = distance_1.default(pt, stop_1, options);
+            // sectionLength
+            var sectionLength = distance_1.default(start, stop_1, options);
+            //perpendicular
+            var heightDistance = Math.max(start.properties.dist, stop_1.properties.dist);
+            var direction = bearing_1.default(start, stop_1);
+            var perpendicularPt1 = destination_1.default(pt, heightDistance, direction + 90, options);
+            var perpendicularPt2 = destination_1.default(pt, heightDistance, direction - 90, options);
+            var intersect = line_intersect_1.default(helpers_1.lineString([
+                perpendicularPt1.geometry.coordinates,
+                perpendicularPt2.geometry.coordinates,
+            ]), helpers_1.lineString([start.geometry.coordinates, stop_1.geometry.coordinates]));
+            var intersectPt = null;
+            if (intersect.features.length > 0) {
+                intersectPt = intersect.features[0];
+                intersectPt.properties.dist = distance_1.default(pt, intersectPt, options);
+                intersectPt.properties.location =
+                    length + distance_1.default(start, intersectPt, options);
+            }
+            if (start.properties.dist < closestPt.properties.dist) {
+                closestPt = start;
+                closestPt.properties.index = i;
+                closestPt.properties.location = length;
+            }
+            if (stop_1.properties.dist < closestPt.properties.dist) {
+                closestPt = stop_1;
+                closestPt.properties.index = i + 1;
+                closestPt.properties.location = length + sectionLength;
+            }
+            if (intersectPt &&
+                intersectPt.properties.dist < closestPt.properties.dist) {
+                closestPt = intersectPt;
+                closestPt.properties.index = i;
+            }
+            // update length
+            length += sectionLength;
+        }
+    });
+    return closestPt;
+}
+exports.default = nearestPointOnLine;

frontend/node_modules/@turf/nearest-point-on-line/package.json

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+{
+  "name": "@turf/nearest-point-on-line",
+  "version": "6.5.0",
+  "description": "turf nearest-point-on-line module",
+  "author": "Turf Authors",
+  "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"
+  },
+  "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",
+    "test:types": "tsc --esModuleInterop --noEmit types.ts"
+  },
+  "devDependencies": {
+    "@turf/along": "^6.5.0",
+    "@turf/length": "^6.5.0",
+    "@turf/truncate": "^6.5.0",
+    "@types/tape": "*",
+    "benchmark": "*",
+    "load-json-file": "*",
+    "npm-run-all": "*",
+    "tape": "*",
+    "ts-node": "*",
+    "tslint": "*",
+    "typescript": "*",
+    "write-json-file": "*"
+  },
+  "dependencies": {
+    "@turf/bearing": "^6.5.0",
+    "@turf/destination": "^6.5.0",
+    "@turf/distance": "^6.5.0",
+    "@turf/helpers": "^6.5.0",
+    "@turf/invariant": "^6.5.0",
+    "@turf/line-intersect": "^6.5.0",
+    "@turf/meta": "^6.5.0"
+  },
+  "gitHead": "5375941072b90d489389db22b43bfe809d5e451e"
+}