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node_modules/@expo/metro/metro-runtime/modules/vendor/eventemitter3.d.ts

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+// See: https://github.com/facebook/metro/blob/v0.83.2/packages/metro-runtime/src/modules/vendor/eventemitter3.js
+
+/**
+ * `object` should be in either of the following forms:
+ * ```
+ * interface EventTypes {
+ *   'event-with-parameters': any[]
+ *   'event-with-example-handler': (...args: any[]) => void
+ * }
+ * ```
+ */
+export type ValidEventTypes = string | symbol | object;
+
+export type EventNames<T extends ValidEventTypes> = T extends string | symbol ? T : keyof T;
+
+export type ArgumentMap<T extends object> = {
+  [K in keyof T]: T[K] extends (...args: any[]) => void ? Parameters<T[K]> : T[K] extends any[] ? T[K] : any[];
+};
+
+export type EventListener<T extends ValidEventTypes, K extends EventNames<T>> = T extends string | symbol
+  ? (...args: any[]) => void
+  : (...args: ArgumentMap<Exclude<T, string | symbol>>[Extract<K, keyof T>]) => void;
+
+export type EventArgs<T extends ValidEventTypes, K extends EventNames<T>> = Parameters<EventListener<T, K>>;
+
+export class EventEmitter<EventTypes extends ValidEventTypes = string | symbol, Context extends any = any> {
+  static prefixed: string | boolean;
+
+  /** Return an array listing the events for which the emitter has registered listeners. */
+  eventNames(): Array<EventNames<EventTypes>>;
+
+  /** Return the listeners registered for a given event. */
+  listeners<T extends EventNames<EventTypes>>(event: T): Array<EventListener<EventTypes, T>>;
+
+  /** Return the number of listeners listening to a given event. */
+  listenerCount(event: EventNames<EventTypes>): number;
+
+  /** Calls each of the listeners registered for a given event. */
+  emit<T extends EventNames<EventTypes>>(event: T, ...args: EventArgs<EventTypes, T>): boolean;
+
+  /** Add a listener for a given event. */
+  on<T extends EventNames<EventTypes>>(event: T, fn: EventListener<EventTypes, T>, context?: Context): this;
+  addListener<T extends EventNames<EventTypes>>(event: T, fn: EventListener<EventTypes, T>, context?: Context): this;
+
+  /** Add a one-time listener for a given event. */
+  once<T extends EventNames<EventTypes>>(event: T, fn: EventListener<EventTypes, T>, context?: Context): this;
+
+  /** Remove the listeners of a given event. */
+  removeListener<T extends EventNames<EventTypes>>(
+    event: T,
+    fn?: EventListener<EventTypes, T>,
+    context?: Context,
+    once?: boolean
+  ): this;
+  off<T extends EventNames<EventTypes>>(
+    event: T,
+    fn?: EventListener<EventTypes, T>,
+    context?: Context,
+    once?: boolean
+  ): this;
+
+  /** Remove all listeners, or those of the specified event. */
+  removeAllListeners(event?: EventNames<EventTypes>): this;
+}
+
+export default EventEmitter;

node_modules/@expo/metro/metro-runtime/modules/vendor/eventemitter3.js

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+module.exports = require("metro-runtime/src/modules/vendor/eventemitter3.js");