index.d.ts

@@ -91,10 +91,16 @@ declare namespace EventEmitter {
     >(): EventEmitter<EventTypes, Context>;
   }
 
-  export type ValidEventTypes =
-    | string
-    | symbol
-    | { [K in string | symbol]: any[] | ((...args: any[]) => void) };
+  /**
+   * `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
@@ -113,7 +119,9 @@ declare namespace EventEmitter {
     K extends EventNames<T>
   > = T extends string | symbol
     ? (...args: any[]) => void
-    : (...args: ArgumentMap<Exclude<T, string | symbol>>[K]) => void;
+    : (
+        ...args: ArgumentMap<Exclude<T, string | symbol>>[Extract<K, keyof T>]
+      ) => void;
 
   export type EventArgs<
     T extends ValidEventTypes,

package.json

@@ -1,6 +1,6 @@
 {
   "name": "eventemitter3",
-  "version": "4.0.4",
+  "version": "4.0.7",
   "description": "EventEmitter3 focuses on performance while maintaining a Node.js AND browser compatible interface.",
   "main": "index.js",
   "typings": "index.d.ts",
@@ -44,13 +44,13 @@
     "url": "https://github.com/primus/eventemitter3/issues"
   },
   "devDependencies": {
-    "assume": "~2.2.0",
-    "browserify": "~16.5.0",
-    "mocha": "~7.1.0",
-    "nyc": "~15.0.0",
-    "pre-commit": "~1.2.0",
-    "sauce-browsers": "~2.0.0",
-    "sauce-test": "~1.3.3",
-    "uglify-js": "~3.9.0"
+    "assume": "^2.2.0",
+    "browserify": "^16.5.0",
+    "mocha": "^8.0.1",
+    "nyc": "^15.1.0",
+    "pre-commit": "^1.2.0",
+    "sauce-browsers": "^2.0.0",
+    "sauce-test": "^1.3.3",
+    "uglify-js": "^3.9.0"
   }
 }

test/browser.js

@@ -12,8 +12,8 @@ const platforms = sauceBrowsers([
   { name: 'firefox', version: ['oldest', 'latest'] },
   { name: 'internet explorer', version: 'oldest..latest' },
   { name: 'iphone', version: ['oldest', 'latest'] },
-  { name: 'safari', version: 'oldest..latest' },
-  { name: 'microsoftedge', version: 'oldest..latest' }
+  { name: 'safari', version: ['oldest', 'latest'] },
+  { name: 'microsoftedge', version: ['oldest', 'latest'] }
 ]).then((platforms) => {
   return platforms.map((platform) => {
     const ret = {