all these changes

frontend/node_modules/@turf/union/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/union/README.md

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+# @turf/union
+
+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
+
+## union
+
+Takes two [(Multi)Polygon(s)][1] and returns a combined polygon. If the input polygons are not contiguous, this function returns a [MultiPolygon][2] feature.
+
+**Parameters**
+
+-   `polygon1` **[Feature][3]&lt;([Polygon][4] \| [MultiPolygon][5])>** input Polygon feature
+-   `polygon2` **[Feature][3]&lt;([Polygon][4] \| [MultiPolygon][5])>** Polygon feature to difference from polygon1
+-   `options` **[Object][6]** Optional Parameters (optional, default `{}`)
+    -   `options.properties` **[Object][6]** Translate Properties to output Feature (optional, default `{}`)
+
+**Examples**
+
+```javascript
+var poly1 = turf.polygon([[
+    [-82.574787, 35.594087],
+    [-82.574787, 35.615581],
+    [-82.545261, 35.615581],
+    [-82.545261, 35.594087],
+    [-82.574787, 35.594087]
+]], {"fill": "#0f0"});
+var poly2 = turf.polygon([[
+    [-82.560024, 35.585153],
+    [-82.560024, 35.602602],
+    [-82.52964, 35.602602],
+    [-82.52964, 35.585153],
+    [-82.560024, 35.585153]
+]], {"fill": "#00f"});
+
+var union = turf.union(poly1, poly2);
+
+//addToMap
+var addToMap = [poly1, poly2, union];
+```
+
+Returns **[Feature][3]&lt;([Polygon][4] \| [MultiPolygon][5])>** a combined [Polygon][1] or [MultiPolygon][2] feature
+
+[1]: https://tools.ietf.org/html/rfc7946#section-3.1.6
+
+[2]: https://tools.ietf.org/html/rfc7946#section-3.1.7
+
+[3]: https://tools.ietf.org/html/rfc7946#section-3.2
+
+[4]: https://tools.ietf.org/html/rfc7946#section-3.1.6
+
+[5]: https://tools.ietf.org/html/rfc7946#section-3.1.7
+
+[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
+
+<!-- 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/union
+```
+
+Or install the Turf module that includes it as a function:
+
+```sh
+$ npm install @turf/turf
+```

frontend/node_modules/@turf/union/dist/es/index.js

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+import polygonClipping from "polygon-clipping";
+import { getGeom } from "@turf/invariant";
+import { multiPolygon, polygon } from "@turf/helpers";
+/**
+ * Takes two {@link (Multi)Polygon(s)} and returns a combined polygon. If the input polygons are not contiguous, this function returns a {@link MultiPolygon} feature.
+ *
+ * @name union
+ * @param {Feature<Polygon|MultiPolygon>} polygon1 input Polygon feature
+ * @param {Feature<Polygon|MultiPolygon>} polygon2 Polygon feature to difference from polygon1
+ * @param {Object} [options={}] Optional Parameters
+ * @param {Object} [options.properties={}] Translate Properties to output Feature
+ * @returns {Feature<(Polygon|MultiPolygon)>} a combined {@link Polygon} or {@link MultiPolygon} feature, or null if the inputs are empty
+ * @example
+ * var poly1 = turf.polygon([[
+ *     [-82.574787, 35.594087],
+ *     [-82.574787, 35.615581],
+ *     [-82.545261, 35.615581],
+ *     [-82.545261, 35.594087],
+ *     [-82.574787, 35.594087]
+ * ]], {"fill": "#0f0"});
+ * var poly2 = turf.polygon([[
+ *     [-82.560024, 35.585153],
+ *     [-82.560024, 35.602602],
+ *     [-82.52964, 35.602602],
+ *     [-82.52964, 35.585153],
+ *     [-82.560024, 35.585153]
+ * ]], {"fill": "#00f"});
+ *
+ * var union = turf.union(poly1, poly2);
+ *
+ * //addToMap
+ * var addToMap = [poly1, poly2, union];
+ */
+function union(poly1, poly2, options) {
+    if (options === void 0) { options = {}; }
+    var geom1 = getGeom(poly1);
+    var geom2 = getGeom(poly2);
+    var unioned = polygonClipping.union(geom1.coordinates, geom2.coordinates);
+    if (unioned.length === 0)
+        return null;
+    if (unioned.length === 1)
+        return polygon(unioned[0], options.properties);
+    else
+        return multiPolygon(unioned, options.properties);
+}
+export default union;

frontend/node_modules/@turf/union/dist/es/package.json

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+{"type":"module"}

frontend/node_modules/@turf/union/dist/js/index.d.ts

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+import { Feature, Polygon, MultiPolygon, Properties } from "@turf/helpers";
+/**
+ * Takes two {@link (Multi)Polygon(s)} and returns a combined polygon. If the input polygons are not contiguous, this function returns a {@link MultiPolygon} feature.
+ *
+ * @name union
+ * @param {Feature<Polygon|MultiPolygon>} polygon1 input Polygon feature
+ * @param {Feature<Polygon|MultiPolygon>} polygon2 Polygon feature to difference from polygon1
+ * @param {Object} [options={}] Optional Parameters
+ * @param {Object} [options.properties={}] Translate Properties to output Feature
+ * @returns {Feature<(Polygon|MultiPolygon)>} a combined {@link Polygon} or {@link MultiPolygon} feature, or null if the inputs are empty
+ * @example
+ * var poly1 = turf.polygon([[
+ *     [-82.574787, 35.594087],
+ *     [-82.574787, 35.615581],
+ *     [-82.545261, 35.615581],
+ *     [-82.545261, 35.594087],
+ *     [-82.574787, 35.594087]
+ * ]], {"fill": "#0f0"});
+ * var poly2 = turf.polygon([[
+ *     [-82.560024, 35.585153],
+ *     [-82.560024, 35.602602],
+ *     [-82.52964, 35.602602],
+ *     [-82.52964, 35.585153],
+ *     [-82.560024, 35.585153]
+ * ]], {"fill": "#00f"});
+ *
+ * var union = turf.union(poly1, poly2);
+ *
+ * //addToMap
+ * var addToMap = [poly1, poly2, union];
+ */
+declare function union<P = Properties>(poly1: Feature<Polygon | MultiPolygon> | Polygon | MultiPolygon, poly2: Feature<Polygon | MultiPolygon> | Polygon | MultiPolygon, options?: {
+    properties?: P;
+}): Feature<Polygon | MultiPolygon, P> | null;
+export default union;

frontend/node_modules/@turf/union/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 polygon_clipping_1 = __importDefault(require("polygon-clipping"));
+var invariant_1 = require("@turf/invariant");
+var helpers_1 = require("@turf/helpers");
+/**
+ * Takes two {@link (Multi)Polygon(s)} and returns a combined polygon. If the input polygons are not contiguous, this function returns a {@link MultiPolygon} feature.
+ *
+ * @name union
+ * @param {Feature<Polygon|MultiPolygon>} polygon1 input Polygon feature
+ * @param {Feature<Polygon|MultiPolygon>} polygon2 Polygon feature to difference from polygon1
+ * @param {Object} [options={}] Optional Parameters
+ * @param {Object} [options.properties={}] Translate Properties to output Feature
+ * @returns {Feature<(Polygon|MultiPolygon)>} a combined {@link Polygon} or {@link MultiPolygon} feature, or null if the inputs are empty
+ * @example
+ * var poly1 = turf.polygon([[
+ *     [-82.574787, 35.594087],
+ *     [-82.574787, 35.615581],
+ *     [-82.545261, 35.615581],
+ *     [-82.545261, 35.594087],
+ *     [-82.574787, 35.594087]
+ * ]], {"fill": "#0f0"});
+ * var poly2 = turf.polygon([[
+ *     [-82.560024, 35.585153],
+ *     [-82.560024, 35.602602],
+ *     [-82.52964, 35.602602],
+ *     [-82.52964, 35.585153],
+ *     [-82.560024, 35.585153]
+ * ]], {"fill": "#00f"});
+ *
+ * var union = turf.union(poly1, poly2);
+ *
+ * //addToMap
+ * var addToMap = [poly1, poly2, union];
+ */
+function union(poly1, poly2, options) {
+    if (options === void 0) { options = {}; }
+    var geom1 = invariant_1.getGeom(poly1);
+    var geom2 = invariant_1.getGeom(poly2);
+    var unioned = polygon_clipping_1.default.union(geom1.coordinates, geom2.coordinates);
+    if (unioned.length === 0)
+        return null;
+    if (unioned.length === 1)
+        return helpers_1.polygon(unioned[0], options.properties);
+    else
+        return helpers_1.multiPolygon(unioned, options.properties);
+}
+exports.default = union;

frontend/node_modules/@turf/union/package.json

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+{
+  "name": "@turf/union",
+  "version": "6.5.0",
+  "description": "turf union 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",
+    "gif"
+  ],
+  "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/combine": "^6.5.0",
+    "@types/tape": "*",
+    "benchmark": "*",
+    "glob": "*",
+    "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",
+    "polygon-clipping": "^0.15.3"
+  },
+  "gitHead": "5375941072b90d489389db22b43bfe809d5e451e"
+}