Initial Commit

packages/foundation/flow/retry/src/strategies/linear/linear.ts

@@ -0,0 +1,21 @@
+import type {
+    LinearBackoffOptions,
+    RetryStrategy,
+} from "../../types/retry.types.js";
+
+/**
+ * Creates a retry strategy with linearly increasing delay.
+ *
+ * `delay(attempt) = initial + (attempt - 1) * increment`, capped at `max`
+ * if provided.
+ *
+ * @param opts - Linear backoff options.
+ * @returns A `RetryStrategy` function.
+ */
+export function createLinearBackoff(opts: LinearBackoffOptions): RetryStrategy {
+    const { initial, increment, max } = opts;
+    return (attempt: number): number => {
+        const delay = initial + (attempt - 1) * increment;
+        return max !== undefined ? Math.min(delay, max) : delay;
+    };
+}