eventemitter3 - npm Package Compare versions

Comparing version 3.1.2 to 4.0.0

index.d.ts

@@ -0,1 +1,4 @@
+type EventNames<T extends string | symbol | { [K in string | symbol]: any[] }> = T extends string | symbol ? T : keyof T;
+type EventArgs<T extends string | symbol | { [K in string | symbol]: any[] }, K extends EventNames<T>> = T extends string | symbol ? any[] : K extends keyof T ? T[K] : never;
+
 /**
@@ -5,3 +8,3 @@ * Minimal `EventEmitter` interface that is molded against the Node.js
  */
-declare class EventEmitter<EventTypes extends string | symbol = string | symbol> {
+declare class EventEmitter<EventTypes extends string | symbol | { [K in keyof EventTypes]: any[] } = string | symbol> {
   static prefixed: string | boolean;
@@ -13,3 +16,3 @@
    */
-  eventNames(): Array<EventTypes>;
+  eventNames(): Array<EventNames<EventTypes>>;
 
@@ -19,3 +22,3 @@ /**
    */
-  listeners(event: EventTypes): Array<EventEmitter.ListenerFn>;
+  listeners<T extends EventNames<EventTypes>>(event: T): Array<EventEmitter.ListenerFn<EventArgs<EventTypes, T>>>;
 
@@ -25,3 +28,3 @@ /**
    */
-  listenerCount(event: EventTypes): number;
+  listenerCount(event: EventNames<EventTypes>): number;
 
@@ -31,3 +34,3 @@ /**
    */
-  emit(event: EventTypes, ...args: Array<any>): boolean;
+  emit<T extends EventNames<EventTypes>>(event: T, ...args: EventArgs<EventTypes, T>): boolean;
 
@@ -37,4 +40,4 @@ /**
    */
-  on(event: EventTypes, fn: EventEmitter.ListenerFn, context?: any): this;
-  addListener(event: EventTypes, fn: EventEmitter.ListenerFn, context?: any): this;
+  on<T extends EventNames<EventTypes>>(event: T, fn: EventEmitter.ListenerFn<EventArgs<EventTypes, T>>, context?: any): this;
+  addListener<T extends EventNames<EventTypes>>(event: T, fn: EventEmitter.ListenerFn<EventArgs<EventTypes, T>>, context?: any): this;
 
@@ -44,3 +47,3 @@ /**
    */
-  once(event: EventTypes, fn: EventEmitter.ListenerFn, context?: any): this;
+  once<T extends EventNames<EventTypes>>(event: T, fn: EventEmitter.ListenerFn<EventArgs<EventTypes, T>>, context?: any): this;
 
@@ -50,4 +53,4 @@ /**
    */
-  removeListener(event: EventTypes, fn?: EventEmitter.ListenerFn, context?: any, once?: boolean): this;
-  off(event: EventTypes, fn?: EventEmitter.ListenerFn, context?: any, once?: boolean): this;
+  removeListener<T extends EventNames<EventTypes>>(event: T, fn?: EventEmitter.ListenerFn<EventArgs<EventTypes, T>>, context?: any, once?: boolean): this;
+  off<T extends EventNames<EventTypes>>(event: T, fn?: EventEmitter.ListenerFn<EventArgs<EventTypes, T>>, context?: any, once?: boolean): this;
 
@@ -57,12 +60,12 @@ /**
    */
-  removeAllListeners(event?: EventTypes): this;
+  removeAllListeners(event?: EventNames<EventTypes>): this;
 }
 
 declare namespace EventEmitter {
-  export interface ListenerFn {
-    (...args: Array<any>): void;
+  export interface ListenerFn<Args extends any[] = any[]> {
+    (...args: Args): void;
   }
 
   export interface EventEmitterStatic {
-    new<EventTypes extends string | symbol = string | symbol>(): EventEmitter<EventTypes>;
+    new<EventTypes extends string | symbol | { [K in keyof EventTypes]: any[] } = string | symbol>(): EventEmitter<EventTypes>;
   }
@@ -69,0 +72,0 @@

package.json

 {
   "name": "eventemitter3",
-  "version": "3.1.2",
+  "version": "4.0.0",
   "description": "EventEmitter3 focuses on performance while maintaining a Node.js AND browser compatible interface.",
@@ -50,8 +50,8 @@ "main": "index.js",
     "mocha": "~6.1.0",
-    "nyc": "~14.0.0",
+    "nyc": "~14.1.0",
     "pre-commit": "~1.2.0",
     "sauce-browsers": "~2.0.0",
     "sauce-test": "~1.3.3",
-    "uglify-js": "~3.5.0"
+    "uglify-js": "~3.6.0"
   }
 }

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

37015

increased by2.14%

Lines of code

636

increased by0.32%

No dependency changes