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+/**
+ * The `DeferredPromise` has a `promise` property in an initially pending state,
+ * that will be resolved when the `done` method is called or rejected when the
+ * `fail` method is called.
+ */
+export interface DeferredPromise<RESOLVES, REJECTS extends Error = Error> {
+    done(result: RESOLVES): void;
+    fail(error: REJECTS): void;
+    readonly status: DeferredPromiseStatus;
+    readonly fulfilled: boolean;
+    promise: Promise<RESOLVES>;
+}
+/**
+ * The three states the DeferredPromise can be in - initially pending then either
+ * resolved or rejected when it is fulfilled.
+ *
+ * ```typescript
+ import {createDeferred, DeferredPromiseStatus} from '@kwsites/promise-deferred`;
+
+ const pending: DeferredPromiseStatus = 'pending';
+ expect(createDeferred()).toHaveProperty('status', pending);
+ ```
+ */
+export declare type DeferredPromiseStatus = 'pending' | 'resolved' | 'rejected';
+/**
+ * Creates a new `DeferredPromise`
+ *
+ * ```typescript
+ import {deferred} from '@kwsites/promise-deferred`;
+ ```
+ */
+export declare function deferred<T extends any = void, E extends Error = Error>(): DeferredPromise<T, E>;
+/**
+ * Alias of the exported `deferred` function, to help consumers wanting to use `deferred` as the
+ * local variable name rather than the factory import name, without needing to rename on import.
+ *
+ * ```typescript
+ import {createDeferred} from '@kwsites/promise-deferred`;
+ ```
+ */
+export declare const createDeferred: typeof deferred;
+/**
+ * Default export allows use as:
+ *
+ * ```typescript
+ import deferred from '@kwsites/promise-deferred`;
+ ```
+ */
+export default deferred;