all these changes

frontend/node_modules/@turf/line-offset/LICENSE

@@ -0,0 +1,20 @@
+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-offset/README.md

@@ -0,0 +1,69 @@
+# @turf/line-offset
+
+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
+
+## lineOffset
+
+Takes a [line][1] and returns a [line][1] at offset by the specified distance.
+
+**Parameters**
+
+-   `geojson` **([Geometry][2] \| [Feature][3]&lt;([LineString][4] \| [MultiLineString][5])>)** input GeoJSON
+-   `distance` **[number][6]** distance to offset the line (can be of negative value)
+-   `options` **[Object][7]** Optional parameters (optional, default `{}`)
+    -   `options.units` **[string][8]** can be degrees, radians, miles, kilometers, inches, yards, meters (optional, default `'kilometers'`)
+
+**Examples**
+
+```javascript
+var line = turf.lineString([[-83, 30], [-84, 36], [-78, 41]], { "stroke": "#F00" });
+
+var offsetLine = turf.lineOffset(line, 2, {units: 'miles'});
+
+//addToMap
+var addToMap = [offsetLine, line]
+offsetLine.properties.stroke = "#00F"
+```
+
+Returns **[Feature][3]&lt;([LineString][4] \| [MultiLineString][5])>** Line offset from the input line
+
+[1]: https://tools.ietf.org/html/rfc7946#section-3.1.4
+
+[2]: https://tools.ietf.org/html/rfc7946#section-3.1
+
+[3]: https://tools.ietf.org/html/rfc7946#section-3.2
+
+[4]: https://tools.ietf.org/html/rfc7946#section-3.1.4
+
+[5]: https://tools.ietf.org/html/rfc7946#section-3.1.5
+
+[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
+
+[7]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
+
+[8]: 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-offset
+```
+
+Or install the Turf module that includes it as a function:
+
+```sh
+$ npm install @turf/turf
+```

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

@@ -0,0 +1,243 @@
+import { flattenEach } from '@turf/meta';
+import { getType, getCoords } from '@turf/invariant';
+import { isObject, lineString, multiLineString, lengthToDegrees } from '@turf/helpers';
+
+/**
+ * https://github.com/rook2pawn/node-intersection
+ *
+ * Author @rook2pawn
+ */
+
+/**
+ * AB
+ *
+ * @private
+ * @param {Array<Array<number>>} segment - 2 vertex line segment
+ * @returns {Array<number>} coordinates [x, y]
+ */
+function ab(segment) {
+  var start = segment[0];
+  var end = segment[1];
+  return [end[0] - start[0], end[1] - start[1]];
+}
+
+/**
+ * Cross Product
+ *
+ * @private
+ * @param {Array<number>} v1 coordinates [x, y]
+ * @param {Array<number>} v2 coordinates [x, y]
+ * @returns {Array<number>} Cross Product
+ */
+function crossProduct(v1, v2) {
+  return v1[0] * v2[1] - v2[0] * v1[1];
+}
+
+/**
+ * Add
+ *
+ * @private
+ * @param {Array<number>} v1 coordinates [x, y]
+ * @param {Array<number>} v2 coordinates [x, y]
+ * @returns {Array<number>} Add
+ */
+function add(v1, v2) {
+  return [v1[0] + v2[0], v1[1] + v2[1]];
+}
+
+/**
+ * Sub
+ *
+ * @private
+ * @param {Array<number>} v1 coordinates [x, y]
+ * @param {Array<number>} v2 coordinates [x, y]
+ * @returns {Array<number>} Sub
+ */
+function sub(v1, v2) {
+  return [v1[0] - v2[0], v1[1] - v2[1]];
+}
+
+/**
+ * scalarMult
+ *
+ * @private
+ * @param {number} s scalar
+ * @param {Array<number>} v coordinates [x, y]
+ * @returns {Array<number>} scalarMult
+ */
+function scalarMult(s, v) {
+  return [s * v[0], s * v[1]];
+}
+
+/**
+ * Intersect Segments
+ *
+ * @private
+ * @param {Array<number>} a coordinates [x, y]
+ * @param {Array<number>} b coordinates [x, y]
+ * @returns {Array<number>} intersection
+ */
+function intersectSegments(a, b) {
+  var p = a[0];
+  var r = ab(a);
+  var q = b[0];
+  var s = ab(b);
+
+  var cross = crossProduct(r, s);
+  var qmp = sub(q, p);
+  var numerator = crossProduct(qmp, s);
+  var t = numerator / cross;
+  var intersection = add(p, scalarMult(t, r));
+  return intersection;
+}
+
+/**
+ * Is Parallel
+ *
+ * @private
+ * @param {Array<number>} a coordinates [x, y]
+ * @param {Array<number>} b coordinates [x, y]
+ * @returns {boolean} true if a and b are parallel (or co-linear)
+ */
+function isParallel(a, b) {
+  var r = ab(a);
+  var s = ab(b);
+  return crossProduct(r, s) === 0;
+}
+
+/**
+ * Intersection
+ *
+ * @private
+ * @param {Array<number>} a coordinates [x, y]
+ * @param {Array<number>} b coordinates [x, y]
+ * @returns {Array<number>|boolean} true if a and b are parallel (or co-linear)
+ */
+function intersection(a, b) {
+  if (isParallel(a, b)) return false;
+  return intersectSegments(a, b);
+}
+
+/**
+ * Takes a {@link LineString|line} and returns a {@link LineString|line} at offset by the specified distance.
+ *
+ * @name lineOffset
+ * @param {Geometry|Feature<LineString|MultiLineString>} geojson input GeoJSON
+ * @param {number} distance distance to offset the line (can be of negative value)
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, kilometers, inches, yards, meters
+ * @returns {Feature<LineString|MultiLineString>} Line offset from the input line
+ * @example
+ * var line = turf.lineString([[-83, 30], [-84, 36], [-78, 41]], { "stroke": "#F00" });
+ *
+ * var offsetLine = turf.lineOffset(line, 2, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [offsetLine, line]
+ * offsetLine.properties.stroke = "#00F"
+ */
+function lineOffset(geojson, distance, options) {
+  // Optional parameters
+  options = options || {};
+  if (!isObject(options)) throw new Error("options is invalid");
+  var units = options.units;
+
+  // Valdiation
+  if (!geojson) throw new Error("geojson is required");
+  if (distance === undefined || distance === null || isNaN(distance))
+    throw new Error("distance is required");
+
+  var type = getType(geojson);
+  var properties = geojson.properties;
+
+  switch (type) {
+    case "LineString":
+      return lineOffsetFeature(geojson, distance, units);
+    case "MultiLineString":
+      var coords = [];
+      flattenEach(geojson, function (feature) {
+        coords.push(
+          lineOffsetFeature(feature, distance, units).geometry.coordinates
+        );
+      });
+      return multiLineString(coords, properties);
+    default:
+      throw new Error("geometry " + type + " is not supported");
+  }
+}
+
+/**
+ * Line Offset
+ *
+ * @private
+ * @param {Geometry|Feature<LineString>} line input line
+ * @param {number} distance distance to offset the line (can be of negative value)
+ * @param {string} [units=kilometers] units
+ * @returns {Feature<LineString>} Line offset from the input line
+ */
+function lineOffsetFeature(line, distance, units) {
+  var segments = [];
+  var offsetDegrees = lengthToDegrees(distance, units);
+  var coords = getCoords(line);
+  var finalCoords = [];
+  coords.forEach(function (currentCoords, index) {
+    if (index !== coords.length - 1) {
+      var segment = processSegment(
+        currentCoords,
+        coords[index + 1],
+        offsetDegrees
+      );
+      segments.push(segment);
+      if (index > 0) {
+        var seg2Coords = segments[index - 1];
+        var intersects = intersection(segment, seg2Coords);
+
+        // Handling for line segments that aren't straight
+        if (intersects !== false) {
+          seg2Coords[1] = intersects;
+          segment[0] = intersects;
+        }
+
+        finalCoords.push(seg2Coords[0]);
+        if (index === coords.length - 2) {
+          finalCoords.push(segment[0]);
+          finalCoords.push(segment[1]);
+        }
+      }
+      // Handling for lines that only have 1 segment
+      if (coords.length === 2) {
+        finalCoords.push(segment[0]);
+        finalCoords.push(segment[1]);
+      }
+    }
+  });
+  return lineString(finalCoords, line.properties);
+}
+
+/**
+ * Process Segment
+ * Inspiration taken from http://stackoverflow.com/questions/2825412/draw-a-parallel-line
+ *
+ * @private
+ * @param {Array<number>} point1 Point coordinates
+ * @param {Array<number>} point2 Point coordinates
+ * @param {number} offset Offset
+ * @returns {Array<Array<number>>} offset points
+ */
+function processSegment(point1, point2, offset) {
+  var L = Math.sqrt(
+    (point1[0] - point2[0]) * (point1[0] - point2[0]) +
+      (point1[1] - point2[1]) * (point1[1] - point2[1])
+  );
+
+  var out1x = point1[0] + (offset * (point2[1] - point1[1])) / L;
+  var out2x = point2[0] + (offset * (point2[1] - point1[1])) / L;
+  var out1y = point1[1] + (offset * (point1[0] - point2[0])) / L;
+  var out2y = point2[1] + (offset * (point1[0] - point2[0])) / L;
+  return [
+    [out1x, out1y],
+    [out2x, out2y],
+  ];
+}
+
+export default lineOffset;

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

@@ -0,0 +1 @@
+{"type":"module"}

frontend/node_modules/@turf/line-offset/dist/js/index.js

@@ -0,0 +1,246 @@
+'use strict';
+
+var meta = require('@turf/meta');
+var invariant = require('@turf/invariant');
+var helpers = require('@turf/helpers');
+
+/**
+ * https://github.com/rook2pawn/node-intersection
+ *
+ * Author @rook2pawn
+ */
+
+/**
+ * AB
+ *
+ * @private
+ * @param {Array<Array<number>>} segment - 2 vertex line segment
+ * @returns {Array<number>} coordinates [x, y]
+ */
+function ab(segment) {
+  var start = segment[0];
+  var end = segment[1];
+  return [end[0] - start[0], end[1] - start[1]];
+}
+
+/**
+ * Cross Product
+ *
+ * @private
+ * @param {Array<number>} v1 coordinates [x, y]
+ * @param {Array<number>} v2 coordinates [x, y]
+ * @returns {Array<number>} Cross Product
+ */
+function crossProduct(v1, v2) {
+  return v1[0] * v2[1] - v2[0] * v1[1];
+}
+
+/**
+ * Add
+ *
+ * @private
+ * @param {Array<number>} v1 coordinates [x, y]
+ * @param {Array<number>} v2 coordinates [x, y]
+ * @returns {Array<number>} Add
+ */
+function add(v1, v2) {
+  return [v1[0] + v2[0], v1[1] + v2[1]];
+}
+
+/**
+ * Sub
+ *
+ * @private
+ * @param {Array<number>} v1 coordinates [x, y]
+ * @param {Array<number>} v2 coordinates [x, y]
+ * @returns {Array<number>} Sub
+ */
+function sub(v1, v2) {
+  return [v1[0] - v2[0], v1[1] - v2[1]];
+}
+
+/**
+ * scalarMult
+ *
+ * @private
+ * @param {number} s scalar
+ * @param {Array<number>} v coordinates [x, y]
+ * @returns {Array<number>} scalarMult
+ */
+function scalarMult(s, v) {
+  return [s * v[0], s * v[1]];
+}
+
+/**
+ * Intersect Segments
+ *
+ * @private
+ * @param {Array<number>} a coordinates [x, y]
+ * @param {Array<number>} b coordinates [x, y]
+ * @returns {Array<number>} intersection
+ */
+function intersectSegments(a, b) {
+  var p = a[0];
+  var r = ab(a);
+  var q = b[0];
+  var s = ab(b);
+
+  var cross = crossProduct(r, s);
+  var qmp = sub(q, p);
+  var numerator = crossProduct(qmp, s);
+  var t = numerator / cross;
+  var intersection = add(p, scalarMult(t, r));
+  return intersection;
+}
+
+/**
+ * Is Parallel
+ *
+ * @private
+ * @param {Array<number>} a coordinates [x, y]
+ * @param {Array<number>} b coordinates [x, y]
+ * @returns {boolean} true if a and b are parallel (or co-linear)
+ */
+function isParallel(a, b) {
+  var r = ab(a);
+  var s = ab(b);
+  return crossProduct(r, s) === 0;
+}
+
+/**
+ * Intersection
+ *
+ * @private
+ * @param {Array<number>} a coordinates [x, y]
+ * @param {Array<number>} b coordinates [x, y]
+ * @returns {Array<number>|boolean} true if a and b are parallel (or co-linear)
+ */
+function intersection(a, b) {
+  if (isParallel(a, b)) return false;
+  return intersectSegments(a, b);
+}
+
+/**
+ * Takes a {@link LineString|line} and returns a {@link LineString|line} at offset by the specified distance.
+ *
+ * @name lineOffset
+ * @param {Geometry|Feature<LineString|MultiLineString>} geojson input GeoJSON
+ * @param {number} distance distance to offset the line (can be of negative value)
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units='kilometers'] can be degrees, radians, miles, kilometers, inches, yards, meters
+ * @returns {Feature<LineString|MultiLineString>} Line offset from the input line
+ * @example
+ * var line = turf.lineString([[-83, 30], [-84, 36], [-78, 41]], { "stroke": "#F00" });
+ *
+ * var offsetLine = turf.lineOffset(line, 2, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [offsetLine, line]
+ * offsetLine.properties.stroke = "#00F"
+ */
+function lineOffset(geojson, distance, options) {
+  // Optional parameters
+  options = options || {};
+  if (!helpers.isObject(options)) throw new Error("options is invalid");
+  var units = options.units;
+
+  // Valdiation
+  if (!geojson) throw new Error("geojson is required");
+  if (distance === undefined || distance === null || isNaN(distance))
+    throw new Error("distance is required");
+
+  var type = invariant.getType(geojson);
+  var properties = geojson.properties;
+
+  switch (type) {
+    case "LineString":
+      return lineOffsetFeature(geojson, distance, units);
+    case "MultiLineString":
+      var coords = [];
+      meta.flattenEach(geojson, function (feature) {
+        coords.push(
+          lineOffsetFeature(feature, distance, units).geometry.coordinates
+        );
+      });
+      return helpers.multiLineString(coords, properties);
+    default:
+      throw new Error("geometry " + type + " is not supported");
+  }
+}
+
+/**
+ * Line Offset
+ *
+ * @private
+ * @param {Geometry|Feature<LineString>} line input line
+ * @param {number} distance distance to offset the line (can be of negative value)
+ * @param {string} [units=kilometers] units
+ * @returns {Feature<LineString>} Line offset from the input line
+ */
+function lineOffsetFeature(line, distance, units) {
+  var segments = [];
+  var offsetDegrees = helpers.lengthToDegrees(distance, units);
+  var coords = invariant.getCoords(line);
+  var finalCoords = [];
+  coords.forEach(function (currentCoords, index) {
+    if (index !== coords.length - 1) {
+      var segment = processSegment(
+        currentCoords,
+        coords[index + 1],
+        offsetDegrees
+      );
+      segments.push(segment);
+      if (index > 0) {
+        var seg2Coords = segments[index - 1];
+        var intersects = intersection(segment, seg2Coords);
+
+        // Handling for line segments that aren't straight
+        if (intersects !== false) {
+          seg2Coords[1] = intersects;
+          segment[0] = intersects;
+        }
+
+        finalCoords.push(seg2Coords[0]);
+        if (index === coords.length - 2) {
+          finalCoords.push(segment[0]);
+          finalCoords.push(segment[1]);
+        }
+      }
+      // Handling for lines that only have 1 segment
+      if (coords.length === 2) {
+        finalCoords.push(segment[0]);
+        finalCoords.push(segment[1]);
+      }
+    }
+  });
+  return helpers.lineString(finalCoords, line.properties);
+}
+
+/**
+ * Process Segment
+ * Inspiration taken from http://stackoverflow.com/questions/2825412/draw-a-parallel-line
+ *
+ * @private
+ * @param {Array<number>} point1 Point coordinates
+ * @param {Array<number>} point2 Point coordinates
+ * @param {number} offset Offset
+ * @returns {Array<Array<number>>} offset points
+ */
+function processSegment(point1, point2, offset) {
+  var L = Math.sqrt(
+    (point1[0] - point2[0]) * (point1[0] - point2[0]) +
+      (point1[1] - point2[1]) * (point1[1] - point2[1])
+  );
+
+  var out1x = point1[0] + (offset * (point2[1] - point1[1])) / L;
+  var out2x = point2[0] + (offset * (point2[1] - point1[1])) / L;
+  var out1y = point1[1] + (offset * (point1[0] - point2[0])) / L;
+  var out2y = point2[1] + (offset * (point1[0] - point2[0])) / L;
+  return [
+    [out1x, out1y],
+    [out2x, out2y],
+  ];
+}
+
+module.exports = lineOffset;
+module.exports.default = lineOffset;

frontend/node_modules/@turf/line-offset/index.d.ts

@@ -0,0 +1,12 @@
+import { Units, Feature, LineString, MultiLineString } from "@turf/helpers";
+
+/**
+ * http://turfjs.org/docs/#lineoffset
+ */
+export default function lineOffset<T extends LineString | MultiLineString>(
+  line: Feature<T> | T,
+  distance: number,
+  options?: {
+    units?: Units;
+  }
+): Feature<T>;

frontend/node_modules/@turf/line-offset/package.json

@@ -0,0 +1,68 @@
+{
+  "name": "@turf/line-offset",
+  "version": "6.5.0",
+  "description": "turf line-offset module",
+  "author": "Turf Authors",
+  "contributors": [
+    "David Wee <@rook2pawn>",
+    "Rowan Winsemius <@rowanwins>",
+    "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": [
+    "line",
+    "linestring",
+    "turf",
+    "offset"
+  ],
+  "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",
+    "test:types": "tsc --esModuleInterop --noEmit types.ts"
+  },
+  "devDependencies": {
+    "@turf/truncate": "^6.5.0",
+    "benchmark": "*",
+    "load-json-file": "*",
+    "npm-run-all": "*",
+    "rollup": "*",
+    "tape": "*",
+    "write-json-file": "*"
+  },
+  "dependencies": {
+    "@turf/helpers": "^6.5.0",
+    "@turf/invariant": "^6.5.0",
+    "@turf/meta": "^6.5.0"
+  },
+  "gitHead": "5375941072b90d489389db22b43bfe809d5e451e"
+}