1 files changed, 27 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/async-value.js b/devtools/client/debugger/src/utils/async-value.js
new file mode 100644
index 0000000000..e1467d2401
--- /dev/null
+++ b/devtools/client/debugger/src/utils/async-value.js
@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+export function pending() {
+  return { state: "pending" };
+}
+export function fulfilled(value) {
+  return { state: "fulfilled", value };
+}
+export function rejected(value) {
+  return { state: "rejected", value };
+}
+
+export function asSettled(value) {
+  return value && value.state !== "pending" ? value : null;
+}
+
+export function isPending(value) {
+  return value.state === "pending";
+}
+export function isFulfilled(value) {
+  return value.state === "fulfilled";
+}
+export function isRejected(value) {
+  return value.state === "rejected";
+}