Added typescript function check to utils at isFunction

Author: theGlenn

dist/context.js.map

@@ -1,5 +1,5 @@
 import { usePromise } from './promise';
-import { combineResolvers } from './helper';
+import { combineResolvers, and, or } from './helper';
 import { createExpressContext } from './context';
 import { createResolver } from './resolver';
-export { usePromise, combineResolvers, createExpressContext, createResolver };
+export { usePromise, combineResolvers, createExpressContext, createResolver, and, or };

dist/helper.js.map

@@ -1 +1,11 @@
-export declare const createResolver: (resFn: any, errFn: any) => (root: any, args?: {}, context?: {}, info?: {}) => Promise<any>;
+export interface ResultFunction<ResulType> {
+    (root: any, args: any, context: any, info: any): Promise<ResulType> | ResulType | void;
+}
+export interface ErrorFunction<ErrorType> {
+    (root: any, args: any, context: any, err: any): ErrorType | void;
+}
+export interface Resolver<ResulType> {
+    (root: any, args: {}, context: {}, info: {}): Promise<ResulType>;
+    createResolver?: <R, E>(resFn: ResultFunction<R>, errFn?: ErrorFunction<E>) => Resolver<R>;
+}
+export declare const createResolver: <R, E>(resFn: ResultFunction<R>, errFn: ErrorFunction<E>) => Resolver<R>;

dist/index.d.ts

@@ -1,3 +1,3 @@
 export declare const isFunction: (fn: any) => boolean;
-export declare const Promisify: (fn: any) => (...args: any[]) => Promise<{}>;
+export declare const Promisify: <T>(fn: any) => (...args: any[]) => Promise<{}>;
 export declare const isNotNullOrUndefined: (val: any) => boolean;