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system/node_modules/ethers/lib.esm/utils/events.js

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+/**
+ *  Events allow for applications to use the observer pattern, which
+ *  allows subscribing and publishing events, outside the normal
+ *  execution paths.
+ *
+ *  @_section api/utils/events:Events  [about-events]
+ */
+import { defineProperties } from "./properties.js";
+/**
+ *  When an [[EventEmitterable]] triggers a [[Listener]], the
+ *  callback always ahas one additional argument passed, which is
+ *  an **EventPayload**.
+ */
+export class EventPayload {
+    /**
+     *  The event filter.
+     */
+    filter;
+    /**
+     *  The **EventEmitterable**.
+     */
+    emitter;
+    #listener;
+    /**
+     *  Create a new **EventPayload** for %%emitter%% with
+     *  the %%listener%% and for %%filter%%.
+     */
+    constructor(emitter, listener, filter) {
+        this.#listener = listener;
+        defineProperties(this, { emitter, filter });
+    }
+    /**
+     *  Unregister the triggered listener for future events.
+     */
+    async removeListener() {
+        if (this.#listener == null) {
+            return;
+        }
+        await this.emitter.off(this.filter, this.#listener);
+    }
+}
+//# sourceMappingURL=events.js.map