refactor isOneWay to properly support bidirectional ways (#10730)

modules/util/object.js

@@ -7,3 +7,26 @@ export function utilObjectOmit(obj, omitKeys) {
         return result;
     }, {});
 }
+
+/**
+ * @template T
+ * @typedef {{ [key: string]: { [value: string]: T } }} TagDictionary<T>
+ */
+
+/**
+ * searches a dictionary for a match, such as `osmOneWayForwardTags`,
+ * `osmAreaKeysExceptions`, etc.
+ * @template T
+ * @param {Tags} tags
+ * @param {TagDictionary<T>} tagDictionary
+ * @returns {T | undefined}
+ */
+export function utilCheckTagDictionary(tags, tagDictionary) {
+    for (const key in tags) {
+        const value = tags[key];
+        if (tagDictionary[key] && value in tagDictionary[key]) {
+            return tagDictionary[key][value];
+        }
+    }
+    return undefined;
+}