Improve resource scan

Walk only unique paths

src/Helpers/Path.ts

@@ -0,0 +1,34 @@
+export interface PathQuery {
+    [key: string]: string | number | undefined;
+}
+
+export interface PathDefinition {
+    name: string;
+    query: PathQuery;
+}
+
+export type PathList = Array<PathDefinition>;
+
+export function path(base: string, query: PathQuery = {}): string {
+    let parts: string[] = [];
+    for (let name of Object.keys(query)) {
+        if (query[name] !== undefined) {
+            parts.push(`${name}=${query[name]}`);
+        }
+    }
+    return base + (parts.length ? '?' + parts.join('&') : '');
+}
+
+export function uniqPaths(paths: PathList): PathList {
+    const keys: { [k: string]: boolean | undefined } = {};
+    const result: PathList = [];
+    for (let path of paths) {
+        const pathKey = JSON.stringify(path);
+        if (keys[pathKey]) {
+            continue;
+        }
+        keys[pathKey] = true;
+        result.push(path);
+    }
+    return result;
+}