diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5658c0..13a79f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+2.1.2 (unreleased)
+=====
+
+* (improvement) Add `isAbortError()`.
+
+
 2.1.1
 =====
 
diff --git a/README.md b/README.md
index 2feb185..ed6b9f9 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,9 @@ Development
 ### Releases
 
 1. Check the CHANGELOG, to ensure that the next version number is correct according to semver and there is no "(unreleased)" after the next version number.
-2. Commit these changes, commit message "Release x.y.z"
-3. Push these changes
-4. Tag the latest commit with "x.y.z"
-5. Push the tag.
+2. If necessary, commit these changes, commit message "Release x.y.z".
+3. Tag the latest commit with "x.y.z".
+4. Push commit + tag.
+5. Create a release in GitHub.
 
 Publishing to npm is done automatically in a GitHub action.
diff --git a/src/network.ts b/src/network.ts
new file mode 100644
index 0000000..6b23ed5
--- /dev/null
+++ b/src/network.ts
@@ -0,0 +1,15 @@
+/**
+ * Returns whether the given error is an abort "error".
+ *
+ * This will be thrown in a fetch() when aborting the request.
+ *
+ * @example
+ * const controller = new AbortController();
+ * fetch(..., {signal: controller.signal})
+ *     .catch(error => isAbortError(error) // will be true)
+ * controller.abort();
+ */
+export function isAbortError (error: unknown) : boolean
+{
+	return error instanceof DOMException && error.name === "AbortError";
+}