Optional 2nd and 3rd params on CallBackFunction

steelbreeze · Apr 8, 2022 · f8d52f0 · f8d52f0
1 parent f473498
commit f8d52f0
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/lib/node/functions.d.ts b/lib/node/functions.d.ts
@@ -3,7 +3,7 @@ export declare type Constructor<TResult> = new (...args: Array<any>) => TResult;
 /** A function that takes a variable number of arguments and returns a result. */
 export declare type Function<TArgs, TResult> = (arg: TArgs) => TResult;
 /** A function used in an array-oriented callback. */
-export declare type CallbackFunction<TValue, TResult> = (value: TValue, index: number, source: Array<TValue>) => TResult;
+export declare type CallbackFunction<TValue, TResult> = (value: TValue, index?: number, source?: Array<TValue>) => TResult;
 /** A function that takes a variable number of arguments and returns a result. */
 export declare type FunctionVA<TArgs, TResult> = (...args: Array<TArgs>) => TResult;
 /** A function taking one argument and returning a boolean result. */

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@steelbreeze/types",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Common TypeScript types used in development of other projects.",
   "main": "./lib/node/index.js",
   "types": "./lib/node/index.d.ts",

diff --git a/src/functions.ts b/src/functions.ts
@@ -5,7 +5,7 @@ export type Constructor<TResult> = new (...args: Array<any>) => TResult;
 export type Function<TArgs, TResult> = (arg: TArgs) => TResult;
 
 /** A function used in an array-oriented callback. */
-export type CallbackFunction<TValue, TResult> = (value: TValue, index: number, source: Array<TValue>) => TResult;
+export type CallbackFunction<TValue, TResult> = (value: TValue, index?: number, source?: Array<TValue>) => TResult;
 
 /** A function that takes a variable number of arguments and returns a result. */
 export type FunctionVA<TArgs, TResult> = (...args: Array<TArgs>) => TResult;