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frontend/node_modules/@turf/line-slice-along/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/line-slice-along/README.md

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+# @turf/line-slice-along
+
+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
+
+## lineSliceAlong
+
+Takes a [line][1], a specified distance along the line to a start [Point][2],
+and a specified  distance along the line to a stop point
+and returns a subsection of the line in-between those points.
+
+This can be useful for extracting only the part of a route between two distances.
+
+**Parameters**
+
+-   `line` **([Feature][3]&lt;[LineString][4]> | [LineString][4])** input line
+-   `startDist` **[number][5]** distance along the line to starting point
+-   `stopDist` **[number][5]** distance along the line to ending point
+-   `options` **[Object][6]** Optional parameters (optional, default `{}`)
+    -   `options.units` **[string][7]** can be degrees, radians, miles, or kilometers (optional, default `'kilometers'`)
+
+**Examples**
+
+```javascript
+var line = turf.lineString([[7, 45], [9, 45], [14, 40], [14, 41]]);
+var start = 12.5;
+var stop = 25;
+var sliced = turf.lineSliceAlong(line, start, stop, {units: 'miles'});
+
+//addToMap
+var addToMap = [line, start, stop, sliced]
+```
+
+Returns **[Feature][3]&lt;[LineString][4]>** sliced line
+
+[1]: https://tools.ietf.org/html/rfc7946#section-3.1.4
+
+[2]: https://tools.ietf.org/html/rfc7946#section-3.1.2
+
+[3]: https://tools.ietf.org/html/rfc7946#section-3.2
+
+[4]: https://tools.ietf.org/html/rfc7946#section-3.1.4
+
+[5]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
+
+[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
+
+[7]: 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/line-slice-along
+```
+
+Or install the Turf module that includes it as a function:
+
+```sh
+$ npm install @turf/turf
+```

frontend/node_modules/@turf/line-slice-along/dist/es/index.js

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+import bearing from '@turf/bearing';
+import distance from '@turf/distance';
+import destination from '@turf/destination';
+import { isObject, lineString } from '@turf/helpers';
+
+/**
+ * Takes a {@link LineString|line}, a specified distance along the line to a start {@link Point},
+ * and a specified  distance along the line to a stop point
+ * and returns a subsection of the line in-between those points.
+ *
+ * This can be useful for extracting only the part of a route between two distances.
+ *
+ * @name lineSliceAlong
+ * @param {Feature<LineString>|LineString} line input line
+ * @param {number} startDist distance along the line to starting point
+ * @param {number} stopDist distance along the line to ending point
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, or kilometers
+ * @returns {Feature<LineString>} sliced line
+ * @example
+ * var line = turf.lineString([[7, 45], [9, 45], [14, 40], [14, 41]]);
+ * var start = 12.5;
+ * var stop = 25;
+ * var sliced = turf.lineSliceAlong(line, start, stop, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [line, start, stop, sliced]
+ */
+function lineSliceAlong(line, startDist, stopDist, options) {
+  // Optional parameters
+  options = options || {};
+  if (!isObject(options)) throw new Error("options is invalid");
+
+  var coords;
+  var slice = [];
+
+  // Validation
+  if (line.type === "Feature") coords = line.geometry.coordinates;
+  else if (line.type === "LineString") coords = line.coordinates;
+  else throw new Error("input must be a LineString Feature or Geometry");
+  var origCoordsLength = coords.length;
+  var travelled = 0;
+  var overshot, direction, interpolated;
+  for (var i = 0; i < coords.length; i++) {
+    if (startDist >= travelled && i === coords.length - 1) break;
+    else if (travelled > startDist && slice.length === 0) {
+      overshot = startDist - travelled;
+      if (!overshot) {
+        slice.push(coords[i]);
+        return lineString(slice);
+      }
+      direction = bearing(coords[i], coords[i - 1]) - 180;
+      interpolated = destination(coords[i], overshot, direction, options);
+      slice.push(interpolated.geometry.coordinates);
+    }
+
+    if (travelled >= stopDist) {
+      overshot = stopDist - travelled;
+      if (!overshot) {
+        slice.push(coords[i]);
+        return lineString(slice);
+      }
+      direction = bearing(coords[i], coords[i - 1]) - 180;
+      interpolated = destination(coords[i], overshot, direction, options);
+      slice.push(interpolated.geometry.coordinates);
+      return lineString(slice);
+    }
+
+    if (travelled >= startDist) {
+      slice.push(coords[i]);
+    }
+
+    if (i === coords.length - 1) {
+      return lineString(slice);
+    }
+
+    travelled += distance(coords[i], coords[i + 1], options);
+  }
+
+  if (travelled < startDist && coords.length === origCoordsLength)
+    throw new Error("Start position is beyond line");
+
+  var last = coords[coords.length - 1];
+  return lineString([last, last]);
+}
+
+export default lineSliceAlong;

frontend/node_modules/@turf/line-slice-along/dist/es/package.json

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+{"type":"module"}

frontend/node_modules/@turf/line-slice-along/dist/js/index.js

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+'use strict';
+
+var bearing = require('@turf/bearing');
+var distance = require('@turf/distance');
+var destination = require('@turf/destination');
+var helpers = require('@turf/helpers');
+
+function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }
+
+var bearing__default = /*#__PURE__*/_interopDefaultLegacy(bearing);
+var distance__default = /*#__PURE__*/_interopDefaultLegacy(distance);
+var destination__default = /*#__PURE__*/_interopDefaultLegacy(destination);
+
+/**
+ * Takes a {@link LineString|line}, a specified distance along the line to a start {@link Point},
+ * and a specified  distance along the line to a stop point
+ * and returns a subsection of the line in-between those points.
+ *
+ * This can be useful for extracting only the part of a route between two distances.
+ *
+ * @name lineSliceAlong
+ * @param {Feature<LineString>|LineString} line input line
+ * @param {number} startDist distance along the line to starting point
+ * @param {number} stopDist distance along the line to ending point
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, or kilometers
+ * @returns {Feature<LineString>} sliced line
+ * @example
+ * var line = turf.lineString([[7, 45], [9, 45], [14, 40], [14, 41]]);
+ * var start = 12.5;
+ * var stop = 25;
+ * var sliced = turf.lineSliceAlong(line, start, stop, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [line, start, stop, sliced]
+ */
+function lineSliceAlong(line, startDist, stopDist, options) {
+  // Optional parameters
+  options = options || {};
+  if (!helpers.isObject(options)) throw new Error("options is invalid");
+
+  var coords;
+  var slice = [];
+
+  // Validation
+  if (line.type === "Feature") coords = line.geometry.coordinates;
+  else if (line.type === "LineString") coords = line.coordinates;
+  else throw new Error("input must be a LineString Feature or Geometry");
+  var origCoordsLength = coords.length;
+  var travelled = 0;
+  var overshot, direction, interpolated;
+  for (var i = 0; i < coords.length; i++) {
+    if (startDist >= travelled && i === coords.length - 1) break;
+    else if (travelled > startDist && slice.length === 0) {
+      overshot = startDist - travelled;
+      if (!overshot) {
+        slice.push(coords[i]);
+        return helpers.lineString(slice);
+      }
+      direction = bearing__default['default'](coords[i], coords[i - 1]) - 180;
+      interpolated = destination__default['default'](coords[i], overshot, direction, options);
+      slice.push(interpolated.geometry.coordinates);
+    }
+
+    if (travelled >= stopDist) {
+      overshot = stopDist - travelled;
+      if (!overshot) {
+        slice.push(coords[i]);
+        return helpers.lineString(slice);
+      }
+      direction = bearing__default['default'](coords[i], coords[i - 1]) - 180;
+      interpolated = destination__default['default'](coords[i], overshot, direction, options);
+      slice.push(interpolated.geometry.coordinates);
+      return helpers.lineString(slice);
+    }
+
+    if (travelled >= startDist) {
+      slice.push(coords[i]);
+    }
+
+    if (i === coords.length - 1) {
+      return helpers.lineString(slice);
+    }
+
+    travelled += distance__default['default'](coords[i], coords[i + 1], options);
+  }
+
+  if (travelled < startDist && coords.length === origCoordsLength)
+    throw new Error("Start position is beyond line");
+
+  var last = coords[coords.length - 1];
+  return helpers.lineString([last, last]);
+}
+
+module.exports = lineSliceAlong;
+module.exports.default = lineSliceAlong;

frontend/node_modules/@turf/line-slice-along/index.d.ts

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+import { Units, LineString, Feature } from "@turf/helpers";
+
+/**
+ * http://turfjs.org/docs/
+ */
+export default function lineSliceAlong(
+  line: Feature<LineString> | LineString,
+  startDist: number,
+  stopDist: number,
+  options?: {
+    units?: Units;
+  }
+): Feature<LineString>;

frontend/node_modules/@turf/line-slice-along/package.json

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+{
+  "name": "@turf/line-slice-along",
+  "version": "6.5.0",
+  "description": "turf line-slice-along 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"
+  },
+  "keywords": [
+    "turf",
+    "along",
+    "line-slice"
+  ],
+  "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": "index.d.ts",
+  "sideEffects": false,
+  "files": [
+    "dist",
+    "index.d.ts"
+  ],
+  "scripts": {
+    "bench": "node -r esm bench.js",
+    "build": "rollup -c ../../rollup.config.js && echo '{\"type\":\"module\"}' > dist/es/package.json",
+    "docs": "node ../../scripts/generate-readmes",
+    "test": "npm-run-all test:*",
+    "test:tape": "node -r esm test.js"
+  },
+  "devDependencies": {
+    "@turf/along": "^6.5.0",
+    "benchmark": "*",
+    "load-json-file": "*",
+    "npm-run-all": "*",
+    "rollup": "*",
+    "tape": "*"
+  },
+  "dependencies": {
+    "@turf/bearing": "^6.5.0",
+    "@turf/destination": "^6.5.0",
+    "@turf/distance": "^6.5.0",
+    "@turf/helpers": "^6.5.0"
+  },
+  "gitHead": "5375941072b90d489389db22b43bfe809d5e451e"
+}