Add handling of lat, lon coordinate queries

src/SearchControl.ts

@@ -3,12 +3,13 @@
 import SearchElement from './SearchElement';
 import ResultList from './resultList';
 import debounce from './lib/debounce';
+import { validateCoords } from './coords';
 
 import {
   createElement,
   addClassName,
   removeClassName,
   stopPropagation,
 } from './domUtils';
 import {
   ENTER_KEY,
@@ -17,7 +18,7 @@
   ARROW_DOWN_KEY,
   ESCAPE_KEY,
 } from './constants';
 import AbstractProvider, { SearchResult } from './providers/provider';
 import { Provider } from './providers';
 
 const defaultOptions: Omit<SearchControlProps, 'provider'> = {
@@ -282,7 +283,7 @@
       );
 
       this.container.appendChild(this.searchElement.form);
       root!.appendChild(this.container);
     }
 
     L.DomEvent.disableClickPropagation(this.searchElement.form);
@@ -373,7 +374,13 @@
     const { provider } = this.options;
 
     if (query.length) {
-      let results = await provider!.search({ query });
+      let results = [];
+      const coords = validateCoords(query);
+      if (coords) {
+        results = coords;
+      } else {
+        results = await provider!.search({ query });
+      }
       results = results.slice(0, this.options.maxSuggestions);
       this.resultList.render(results, this.options.resultFormat);
     } else {
@@ -385,7 +392,13 @@
     this.resultList.clear();
     const { provider } = this.options;
 
-    const results = await provider!.search(query);
+    let results = [];
+    const coords = validateCoords(query);
+    if (coords) {
+      results = coords;
+    } else {
+      results = await provider!.search(query);
+    }
 
     if (results && results.length > 0) {
       this.showResult(results[0], query);

src/coords.ts

@@ -0,0 +1,21 @@
+// @ts-nocheck
+
+export function validateCoords(query) {
+  const q = query.trim();
+  const regex = /^(-?[0-9]*\.?\s*[0-9]*)\s*,?\s*(-?[0-9]*\.?[0-9]*)$/g;
+  const match = regex.exec(q);
+  if (match) {
+    let lat = Number(match[1]);
+    let lng = Number(match[2]);
+        if (( -90 < lat < 90) && ( -180 < lng < 180)) {
+            return [{
+                x: lng,
+                y: lat,
+                label: q,
+                bounds: null,
+                raw: {}
+            }];
+        }
+    }
+    return false;
+}