all these changes

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

@@ -0,0 +1,20 @@
+import { Feature, FeatureCollection, GeometryCollection, Units } from "@turf/helpers";
+/**
+ * Takes a {@link GeoJSON} and measures its length in the specified units, {@link (Multi)Point}'s distance are ignored.
+ *
+ * @name length
+ * @param {Feature<LineString|MultiLineString>} geojson GeoJSON to measure
+ * @param {Object} [options={}] Optional parameters
+ * @param {string} [options.units=kilometers] can be degrees, radians, miles, or kilometers
+ * @returns {number} length of GeoJSON
+ * @example
+ * var line = turf.lineString([[115, -32], [131, -22], [143, -25], [150, -34]]);
+ * var length = turf.length(line, {units: 'miles'});
+ *
+ * //addToMap
+ * var addToMap = [line];
+ * line.properties.distance = length;
+ */
+export default function length(geojson: Feature<any> | FeatureCollection<any> | GeometryCollection, options?: {
+    units?: Units;
+}): number;