run npm install to generate a package lock

node_modules/@weborigami/async-tree/test/operations/regExpKeys.test.js

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+import assert from "node:assert";
+import { describe, test } from "node:test";
+import { DeepObjectTree, Tree } from "../../src/internal.js";
+import regExpKeys from "../../src/operations/regExpKeys.js";
+
+describe("regExpKeys", () => {
+  test("matches keys using regular expressions", async () => {
+    const fixture = await regExpKeys(
+      new DeepObjectTree({
+        a: true,
+        "b.*": true,
+        c: {
+          d: true,
+          "e*": true,
+        },
+      })
+    );
+    assert(await Tree.traverse(fixture, "a"));
+    assert(!(await Tree.traverse(fixture, "alice")));
+    assert(await Tree.traverse(fixture, "bob"));
+    assert(await Tree.traverse(fixture, "brenda"));
+    assert(await Tree.traverse(fixture, "c", "d"));
+    assert(await Tree.traverse(fixture, "c", "eee"));
+  });
+});