all these changes

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

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+# @turf/invariant
+
+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
+
+## getCoord
+
+Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.
+
+**Parameters**
+
+-   `coord` **([Array][1]&lt;[number][2]> | [Geometry][3]&lt;[Point][4]> | [Feature][5]&lt;[Point][4]>)** GeoJSON Point or an Array of numbers
+
+**Examples**
+
+```javascript
+var pt = turf.point([10, 10]);
+
+var coord = turf.getCoord(pt);
+//= [10, 10]
+```
+
+Returns **[Array][1]&lt;[number][2]>** coordinates
+
+## getCoords
+
+Unwrap coordinates from a Feature, Geometry Object or an Array
+
+**Parameters**
+
+-   `coords` **([Array][1]&lt;any> | [Geometry][3] \| [Feature][5])** Feature, Geometry Object or an Array
+
+**Examples**
+
+```javascript
+var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);
+
+var coords = turf.getCoords(poly);
+//= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]
+```
+
+Returns **[Array][1]&lt;any>** coordinates
+
+## containsNumber
+
+Checks if coordinates contains a number
+
+**Parameters**
+
+-   `coordinates` **[Array][1]&lt;any>** GeoJSON Coordinates
+
+Returns **[boolean][6]** true if Array contains a number
+
+## geojsonType
+
+Enforce expectations about types of GeoJSON objects for Turf.
+
+**Parameters**
+
+-   `value` **[GeoJSON][7]** any GeoJSON object
+-   `type` **[string][8]** expected GeoJSON type
+-   `name` **[string][8]** name of calling function
+
+
+-   Throws **[Error][9]** if value is not the expected type.
+
+## featureOf
+
+Enforce expectations about types of [Feature][10] inputs for Turf.
+Internally this uses [geojsonType][11] to judge geometry types.
+
+**Parameters**
+
+-   `feature` **[Feature][5]** a feature with an expected geometry type
+-   `type` **[string][8]** expected GeoJSON type
+-   `name` **[string][8]** name of calling function
+
+
+-   Throws **[Error][9]** error if value is not the expected type.
+
+## collectionOf
+
+Enforce expectations about types of [FeatureCollection][12] inputs for Turf.
+Internally this uses [geojsonType][11] to judge geometry types.
+
+**Parameters**
+
+-   `featureCollection` **[FeatureCollection][13]** a FeatureCollection for which features will be judged
+-   `type` **[string][8]** expected GeoJSON type
+-   `name` **[string][8]** name of calling function
+
+
+-   Throws **[Error][9]** if value is not the expected type.
+
+## getGeom
+
+Get Geometry from Feature or Geometry Object
+
+**Parameters**
+
+-   `geojson` **([Feature][5] \| [Geometry][3])** GeoJSON Feature or Geometry Object
+
+**Examples**
+
+```javascript
+var point = {
+  "type": "Feature",
+  "properties": {},
+  "geometry": {
+    "type": "Point",
+    "coordinates": [110, 40]
+  }
+}
+var geom = turf.getGeom(point)
+//={"type": "Point", "coordinates": [110, 40]}
+```
+
+-   Throws **[Error][9]** if geojson is not a Feature or Geometry Object
+
+Returns **([Geometry][3] | null)** GeoJSON Geometry Object
+
+## getGeomType
+
+Get Geometry Type from Feature or Geometry Object
+
+-   Throws **[Error][9]** **DEPRECATED** in v5.0.0 in favor of getType
+
+## getType
+
+Get GeoJSON object's type, Geometry type is prioritize.
+
+**Parameters**
+
+-   `geojson` **[GeoJSON][7]** GeoJSON object
+-   `name` **[string][8]** name of the variable to display in error message (optional, default `"geojson"`)
+
+**Examples**
+
+```javascript
+var point = {
+  "type": "Feature",
+  "properties": {},
+  "geometry": {
+    "type": "Point",
+    "coordinates": [110, 40]
+  }
+}
+var geom = turf.getType(point)
+//="Point"
+```
+
+Returns **[string][8]** GeoJSON type
+
+[1]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array
+
+[2]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number
+
+[3]: https://tools.ietf.org/html/rfc7946#section-3.1
+
+[4]: https://tools.ietf.org/html/rfc7946#section-3.1.2
+
+[5]: https://tools.ietf.org/html/rfc7946#section-3.2
+
+[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean
+
+[7]: https://tools.ietf.org/html/rfc7946#section-3
+
+[8]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String
+
+[9]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Error
+
+[10]: https://tools.ietf.org/html/rfc7946#section-3.2
+
+[11]: #geojsontype
+
+[12]: https://tools.ietf.org/html/rfc7946#section-3.3
+
+[13]: https://tools.ietf.org/html/rfc7946#section-3.3
+
+<!-- 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/invariant
+```
+
+Or install the Turf module that includes it as a function:
+
+```sh
+$ npm install @turf/turf
+```

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

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+import { isNumber, } from "@turf/helpers";
+/**
+ * Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.
+ *
+ * @name getCoord
+ * @param {Array<number>|Geometry<Point>|Feature<Point>} coord GeoJSON Point or an Array of numbers
+ * @returns {Array<number>} coordinates
+ * @example
+ * var pt = turf.point([10, 10]);
+ *
+ * var coord = turf.getCoord(pt);
+ * //= [10, 10]
+ */
+export function getCoord(coord) {
+    if (!coord) {
+        throw new Error("coord is required");
+    }
+    if (!Array.isArray(coord)) {
+        if (coord.type === "Feature" &&
+            coord.geometry !== null &&
+            coord.geometry.type === "Point") {
+            return coord.geometry.coordinates;
+        }
+        if (coord.type === "Point") {
+            return coord.coordinates;
+        }
+    }
+    if (Array.isArray(coord) &&
+        coord.length >= 2 &&
+        !Array.isArray(coord[0]) &&
+        !Array.isArray(coord[1])) {
+        return coord;
+    }
+    throw new Error("coord must be GeoJSON Point or an Array of numbers");
+}
+/**
+ * Unwrap coordinates from a Feature, Geometry Object or an Array
+ *
+ * @name getCoords
+ * @param {Array<any>|Geometry|Feature} coords Feature, Geometry Object or an Array
+ * @returns {Array<any>} coordinates
+ * @example
+ * var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);
+ *
+ * var coords = turf.getCoords(poly);
+ * //= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]
+ */
+export function getCoords(coords) {
+    if (Array.isArray(coords)) {
+        return coords;
+    }
+    // Feature
+    if (coords.type === "Feature") {
+        if (coords.geometry !== null) {
+            return coords.geometry.coordinates;
+        }
+    }
+    else {
+        // Geometry
+        if (coords.coordinates) {
+            return coords.coordinates;
+        }
+    }
+    throw new Error("coords must be GeoJSON Feature, Geometry Object or an Array");
+}
+/**
+ * Checks if coordinates contains a number
+ *
+ * @name containsNumber
+ * @param {Array<any>} coordinates GeoJSON Coordinates
+ * @returns {boolean} true if Array contains a number
+ */
+export function containsNumber(coordinates) {
+    if (coordinates.length > 1 &&
+        isNumber(coordinates[0]) &&
+        isNumber(coordinates[1])) {
+        return true;
+    }
+    if (Array.isArray(coordinates[0]) && coordinates[0].length) {
+        return containsNumber(coordinates[0]);
+    }
+    throw new Error("coordinates must only contain numbers");
+}
+/**
+ * Enforce expectations about types of GeoJSON objects for Turf.
+ *
+ * @name geojsonType
+ * @param {GeoJSON} value any GeoJSON object
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} if value is not the expected type.
+ */
+export function geojsonType(value, type, name) {
+    if (!type || !name) {
+        throw new Error("type and name required");
+    }
+    if (!value || value.type !== type) {
+        throw new Error("Invalid input to " +
+            name +
+            ": must be a " +
+            type +
+            ", given " +
+            value.type);
+    }
+}
+/**
+ * Enforce expectations about types of {@link Feature} inputs for Turf.
+ * Internally this uses {@link geojsonType} to judge geometry types.
+ *
+ * @name featureOf
+ * @param {Feature} feature a feature with an expected geometry type
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} error if value is not the expected type.
+ */
+export function featureOf(feature, type, name) {
+    if (!feature) {
+        throw new Error("No feature passed");
+    }
+    if (!name) {
+        throw new Error(".featureOf() requires a name");
+    }
+    if (!feature || feature.type !== "Feature" || !feature.geometry) {
+        throw new Error("Invalid input to " + name + ", Feature with geometry required");
+    }
+    if (!feature.geometry || feature.geometry.type !== type) {
+        throw new Error("Invalid input to " +
+            name +
+            ": must be a " +
+            type +
+            ", given " +
+            feature.geometry.type);
+    }
+}
+/**
+ * Enforce expectations about types of {@link FeatureCollection} inputs for Turf.
+ * Internally this uses {@link geojsonType} to judge geometry types.
+ *
+ * @name collectionOf
+ * @param {FeatureCollection} featureCollection a FeatureCollection for which features will be judged
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} if value is not the expected type.
+ */
+export function collectionOf(featureCollection, type, name) {
+    if (!featureCollection) {
+        throw new Error("No featureCollection passed");
+    }
+    if (!name) {
+        throw new Error(".collectionOf() requires a name");
+    }
+    if (!featureCollection || featureCollection.type !== "FeatureCollection") {
+        throw new Error("Invalid input to " + name + ", FeatureCollection required");
+    }
+    for (var _i = 0, _a = featureCollection.features; _i < _a.length; _i++) {
+        var feature = _a[_i];
+        if (!feature || feature.type !== "Feature" || !feature.geometry) {
+            throw new Error("Invalid input to " + name + ", Feature with geometry required");
+        }
+        if (!feature.geometry || feature.geometry.type !== type) {
+            throw new Error("Invalid input to " +
+                name +
+                ": must be a " +
+                type +
+                ", given " +
+                feature.geometry.type);
+        }
+    }
+}
+/**
+ * Get Geometry from Feature or Geometry Object
+ *
+ * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object
+ * @returns {Geometry|null} GeoJSON Geometry Object
+ * @throws {Error} if geojson is not a Feature or Geometry Object
+ * @example
+ * var point = {
+ *   "type": "Feature",
+ *   "properties": {},
+ *   "geometry": {
+ *     "type": "Point",
+ *     "coordinates": [110, 40]
+ *   }
+ * }
+ * var geom = turf.getGeom(point)
+ * //={"type": "Point", "coordinates": [110, 40]}
+ */
+export function getGeom(geojson) {
+    if (geojson.type === "Feature") {
+        return geojson.geometry;
+    }
+    return geojson;
+}
+/**
+ * Get GeoJSON object's type, Geometry type is prioritize.
+ *
+ * @param {GeoJSON} geojson GeoJSON object
+ * @param {string} [name="geojson"] name of the variable to display in error message (unused)
+ * @returns {string} GeoJSON type
+ * @example
+ * var point = {
+ *   "type": "Feature",
+ *   "properties": {},
+ *   "geometry": {
+ *     "type": "Point",
+ *     "coordinates": [110, 40]
+ *   }
+ * }
+ * var geom = turf.getType(point)
+ * //="Point"
+ */
+export function getType(geojson, _name) {
+    if (geojson.type === "FeatureCollection") {
+        return "FeatureCollection";
+    }
+    if (geojson.type === "GeometryCollection") {
+        return "GeometryCollection";
+    }
+    if (geojson.type === "Feature" && geojson.geometry !== null) {
+        return geojson.geometry.type;
+    }
+    return geojson.type;
+}

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

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

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

@@ -0,0 +1,105 @@
+import { Feature, FeatureCollection, Geometries, GeometryCollection, Point } from "@turf/helpers";
+/**
+ * Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.
+ *
+ * @name getCoord
+ * @param {Array<number>|Geometry<Point>|Feature<Point>} coord GeoJSON Point or an Array of numbers
+ * @returns {Array<number>} coordinates
+ * @example
+ * var pt = turf.point([10, 10]);
+ *
+ * var coord = turf.getCoord(pt);
+ * //= [10, 10]
+ */
+export declare function getCoord(coord: Feature<Point> | Point | number[]): number[];
+/**
+ * Unwrap coordinates from a Feature, Geometry Object or an Array
+ *
+ * @name getCoords
+ * @param {Array<any>|Geometry|Feature} coords Feature, Geometry Object or an Array
+ * @returns {Array<any>} coordinates
+ * @example
+ * var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);
+ *
+ * var coords = turf.getCoords(poly);
+ * //= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]
+ */
+export declare function getCoords<G extends Geometries>(coords: any[] | Feature<G> | G): any[];
+/**
+ * Checks if coordinates contains a number
+ *
+ * @name containsNumber
+ * @param {Array<any>} coordinates GeoJSON Coordinates
+ * @returns {boolean} true if Array contains a number
+ */
+export declare function containsNumber(coordinates: any[]): boolean;
+/**
+ * Enforce expectations about types of GeoJSON objects for Turf.
+ *
+ * @name geojsonType
+ * @param {GeoJSON} value any GeoJSON object
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} if value is not the expected type.
+ */
+export declare function geojsonType(value: any, type: string, name: string): void;
+/**
+ * Enforce expectations about types of {@link Feature} inputs for Turf.
+ * Internally this uses {@link geojsonType} to judge geometry types.
+ *
+ * @name featureOf
+ * @param {Feature} feature a feature with an expected geometry type
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} error if value is not the expected type.
+ */
+export declare function featureOf(feature: Feature<any>, type: string, name: string): void;
+/**
+ * Enforce expectations about types of {@link FeatureCollection} inputs for Turf.
+ * Internally this uses {@link geojsonType} to judge geometry types.
+ *
+ * @name collectionOf
+ * @param {FeatureCollection} featureCollection a FeatureCollection for which features will be judged
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} if value is not the expected type.
+ */
+export declare function collectionOf(featureCollection: FeatureCollection<any>, type: string, name: string): void;
+/**
+ * Get Geometry from Feature or Geometry Object
+ *
+ * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object
+ * @returns {Geometry|null} GeoJSON Geometry Object
+ * @throws {Error} if geojson is not a Feature or Geometry Object
+ * @example
+ * var point = {
+ *   "type": "Feature",
+ *   "properties": {},
+ *   "geometry": {
+ *     "type": "Point",
+ *     "coordinates": [110, 40]
+ *   }
+ * }
+ * var geom = turf.getGeom(point)
+ * //={"type": "Point", "coordinates": [110, 40]}
+ */
+export declare function getGeom<G extends Geometries | GeometryCollection>(geojson: Feature<G> | G): G;
+/**
+ * Get GeoJSON object's type, Geometry type is prioritize.
+ *
+ * @param {GeoJSON} geojson GeoJSON object
+ * @param {string} [name="geojson"] name of the variable to display in error message (unused)
+ * @returns {string} GeoJSON type
+ * @example
+ * var point = {
+ *   "type": "Feature",
+ *   "properties": {},
+ *   "geometry": {
+ *     "type": "Point",
+ *     "coordinates": [110, 40]
+ *   }
+ * }
+ * var geom = turf.getType(point)
+ * //="Point"
+ */
+export declare function getType(geojson: Feature<any> | FeatureCollection<any> | Geometries | GeometryCollection, _name?: string): string;

frontend/node_modules/@turf/invariant/dist/js/index.js

@@ -0,0 +1,233 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var helpers_1 = require("@turf/helpers");
+/**
+ * Unwrap a coordinate from a Point Feature, Geometry or a single coordinate.
+ *
+ * @name getCoord
+ * @param {Array<number>|Geometry<Point>|Feature<Point>} coord GeoJSON Point or an Array of numbers
+ * @returns {Array<number>} coordinates
+ * @example
+ * var pt = turf.point([10, 10]);
+ *
+ * var coord = turf.getCoord(pt);
+ * //= [10, 10]
+ */
+function getCoord(coord) {
+    if (!coord) {
+        throw new Error("coord is required");
+    }
+    if (!Array.isArray(coord)) {
+        if (coord.type === "Feature" &&
+            coord.geometry !== null &&
+            coord.geometry.type === "Point") {
+            return coord.geometry.coordinates;
+        }
+        if (coord.type === "Point") {
+            return coord.coordinates;
+        }
+    }
+    if (Array.isArray(coord) &&
+        coord.length >= 2 &&
+        !Array.isArray(coord[0]) &&
+        !Array.isArray(coord[1])) {
+        return coord;
+    }
+    throw new Error("coord must be GeoJSON Point or an Array of numbers");
+}
+exports.getCoord = getCoord;
+/**
+ * Unwrap coordinates from a Feature, Geometry Object or an Array
+ *
+ * @name getCoords
+ * @param {Array<any>|Geometry|Feature} coords Feature, Geometry Object or an Array
+ * @returns {Array<any>} coordinates
+ * @example
+ * var poly = turf.polygon([[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]);
+ *
+ * var coords = turf.getCoords(poly);
+ * //= [[[119.32, -8.7], [119.55, -8.69], [119.51, -8.54], [119.32, -8.7]]]
+ */
+function getCoords(coords) {
+    if (Array.isArray(coords)) {
+        return coords;
+    }
+    // Feature
+    if (coords.type === "Feature") {
+        if (coords.geometry !== null) {
+            return coords.geometry.coordinates;
+        }
+    }
+    else {
+        // Geometry
+        if (coords.coordinates) {
+            return coords.coordinates;
+        }
+    }
+    throw new Error("coords must be GeoJSON Feature, Geometry Object or an Array");
+}
+exports.getCoords = getCoords;
+/**
+ * Checks if coordinates contains a number
+ *
+ * @name containsNumber
+ * @param {Array<any>} coordinates GeoJSON Coordinates
+ * @returns {boolean} true if Array contains a number
+ */
+function containsNumber(coordinates) {
+    if (coordinates.length > 1 &&
+        helpers_1.isNumber(coordinates[0]) &&
+        helpers_1.isNumber(coordinates[1])) {
+        return true;
+    }
+    if (Array.isArray(coordinates[0]) && coordinates[0].length) {
+        return containsNumber(coordinates[0]);
+    }
+    throw new Error("coordinates must only contain numbers");
+}
+exports.containsNumber = containsNumber;
+/**
+ * Enforce expectations about types of GeoJSON objects for Turf.
+ *
+ * @name geojsonType
+ * @param {GeoJSON} value any GeoJSON object
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} if value is not the expected type.
+ */
+function geojsonType(value, type, name) {
+    if (!type || !name) {
+        throw new Error("type and name required");
+    }
+    if (!value || value.type !== type) {
+        throw new Error("Invalid input to " +
+            name +
+            ": must be a " +
+            type +
+            ", given " +
+            value.type);
+    }
+}
+exports.geojsonType = geojsonType;
+/**
+ * Enforce expectations about types of {@link Feature} inputs for Turf.
+ * Internally this uses {@link geojsonType} to judge geometry types.
+ *
+ * @name featureOf
+ * @param {Feature} feature a feature with an expected geometry type
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} error if value is not the expected type.
+ */
+function featureOf(feature, type, name) {
+    if (!feature) {
+        throw new Error("No feature passed");
+    }
+    if (!name) {
+        throw new Error(".featureOf() requires a name");
+    }
+    if (!feature || feature.type !== "Feature" || !feature.geometry) {
+        throw new Error("Invalid input to " + name + ", Feature with geometry required");
+    }
+    if (!feature.geometry || feature.geometry.type !== type) {
+        throw new Error("Invalid input to " +
+            name +
+            ": must be a " +
+            type +
+            ", given " +
+            feature.geometry.type);
+    }
+}
+exports.featureOf = featureOf;
+/**
+ * Enforce expectations about types of {@link FeatureCollection} inputs for Turf.
+ * Internally this uses {@link geojsonType} to judge geometry types.
+ *
+ * @name collectionOf
+ * @param {FeatureCollection} featureCollection a FeatureCollection for which features will be judged
+ * @param {string} type expected GeoJSON type
+ * @param {string} name name of calling function
+ * @throws {Error} if value is not the expected type.
+ */
+function collectionOf(featureCollection, type, name) {
+    if (!featureCollection) {
+        throw new Error("No featureCollection passed");
+    }
+    if (!name) {
+        throw new Error(".collectionOf() requires a name");
+    }
+    if (!featureCollection || featureCollection.type !== "FeatureCollection") {
+        throw new Error("Invalid input to " + name + ", FeatureCollection required");
+    }
+    for (var _i = 0, _a = featureCollection.features; _i < _a.length; _i++) {
+        var feature = _a[_i];
+        if (!feature || feature.type !== "Feature" || !feature.geometry) {
+            throw new Error("Invalid input to " + name + ", Feature with geometry required");
+        }
+        if (!feature.geometry || feature.geometry.type !== type) {
+            throw new Error("Invalid input to " +
+                name +
+                ": must be a " +
+                type +
+                ", given " +
+                feature.geometry.type);
+        }
+    }
+}
+exports.collectionOf = collectionOf;
+/**
+ * Get Geometry from Feature or Geometry Object
+ *
+ * @param {Feature|Geometry} geojson GeoJSON Feature or Geometry Object
+ * @returns {Geometry|null} GeoJSON Geometry Object
+ * @throws {Error} if geojson is not a Feature or Geometry Object
+ * @example
+ * var point = {
+ *   "type": "Feature",
+ *   "properties": {},
+ *   "geometry": {
+ *     "type": "Point",
+ *     "coordinates": [110, 40]
+ *   }
+ * }
+ * var geom = turf.getGeom(point)
+ * //={"type": "Point", "coordinates": [110, 40]}
+ */
+function getGeom(geojson) {
+    if (geojson.type === "Feature") {
+        return geojson.geometry;
+    }
+    return geojson;
+}
+exports.getGeom = getGeom;
+/**
+ * Get GeoJSON object's type, Geometry type is prioritize.
+ *
+ * @param {GeoJSON} geojson GeoJSON object
+ * @param {string} [name="geojson"] name of the variable to display in error message (unused)
+ * @returns {string} GeoJSON type
+ * @example
+ * var point = {
+ *   "type": "Feature",
+ *   "properties": {},
+ *   "geometry": {
+ *     "type": "Point",
+ *     "coordinates": [110, 40]
+ *   }
+ * }
+ * var geom = turf.getType(point)
+ * //="Point"
+ */
+function getType(geojson, _name) {
+    if (geojson.type === "FeatureCollection") {
+        return "FeatureCollection";
+    }
+    if (geojson.type === "GeometryCollection") {
+        return "GeometryCollection";
+    }
+    if (geojson.type === "Feature" && geojson.geometry !== null) {
+        return geojson.geometry.type;
+    }
+    return geojson.type;
+}
+exports.getType = getType;

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

@@ -0,0 +1,64 @@
+{
+  "name": "@turf/invariant",
+  "version": "6.5.0",
+  "description": "turf invariant module",
+  "author": "Turf Authors",
+  "contributors": [
+    "Tom MacWright <@tmcw>",
+    "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",
+    "invariant",
+    "expectations"
+  ],
+  "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": {
+    "benchmark": "*",
+    "npm-run-all": "*",
+    "tape": "*",
+    "ts-node": "*",
+    "tslint": "*",
+    "typescript": "*"
+  },
+  "dependencies": {
+    "@turf/helpers": "^6.5.0"
+  },
+  "gitHead": "5375941072b90d489389db22b43bfe809d5e451e"
+}