make wrapper generics optional

Author: manwaring

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html)
 
+## [3.3.2]  (2020-05-07)
+
+### Changed
+
+- Make generics optional by defaulting to any
+
 ## [3.3.1]  (2020-05-07)
 
 ### Changed
@@ -195,6 +201,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/),
 - Update older libraries
 - Now publish from Git tags instead of master pushes
 
+[3.3.2]: https://github.com/manwaring/lambda-wrapper/compare/v3.3.1...v3.3.2
 [3.3.1]: https://github.com/manwaring/lambda-wrapper/compare/v3.3.0...v3.3.1
 [3.3.0]: https://github.com/manwaring/lambda-wrapper/compare/v3.2.0...v3.3.0
 [3.2.0]: https://github.com/manwaring/lambda-wrapper/compare/v3.1.3...v3.2.0

src/api/wrapper.ts

@@ -2,7 +2,7 @@ import { APIGatewayEvent, Context, Callback } from 'aws-lambda';
 import { Request } from './parser';
 import { success, invalid, notFound, notAuthorized, error, redirect, ApiResponse } from './responses';
 
-export function api<T>(
+export function api<T = any>(
   custom: (props: ApiSignature<T>) => any
 ): (event: APIGatewayEvent, context: Context, callback: Callback) => any {
   return function handler(event: APIGatewayEvent) {
@@ -26,7 +26,7 @@ export function api<T>(
   };
 }
 
-export interface ApiSignature<T> {
+export interface ApiSignature<T = any> {
   event: APIGatewayEvent; // original event
   body: T; // JSON parsed body payload if exists (otherwise undefined)
   path: { [name: string]: string }; // path param payload as key-value pairs if exists (otherwise undefined)

src/dynamodb-stream/parser.ts

@@ -1,7 +1,7 @@
 import { DynamoDBStreamEvent, DynamoDBRecord } from 'aws-lambda';
 import { DynamoDB, DynamoDBStreams } from 'aws-sdk';
 
-export class DynamoDBStreamParser<T> {
+export class DynamoDBStreamParser<T = any> {
   constructor(private event: DynamoDBStreamEvent) {}
 
   getVersions(): { newVersions: any[]; oldVersions: any[]; versions: Version<T>[] } {

src/dynamodb-stream/wrapper.test.ts

@@ -6,7 +6,6 @@ describe('DynamoDB Stream wrapper', () => {
   const callback = jest.fn((err, result) => (err ? new Error(err) : result));
 
   it('Has expected properties and response function', () => {
-    // @ts-ignore
     function custom({ event, newVersions, oldVersions, versions, success, error }: DynamoDBStreamSignature) {
       expect(event).toEqual(requestEvent);
       expect(newVersions).toEqual([{ Message: 'This item has changed', Id: 101 }]);

src/dynamodb-stream/wrapper.ts

@@ -5,7 +5,7 @@ import { success, error } from './responses';
 
 const metrics = new Metrics('DynamoDB Stream');
 
-export function dynamodbStream<T>(
+export function dynamodbStream<T = any>(
   custom: (props: DynamoDBStreamSignature<T>) => any
 ): (event: DynamoDBStreamEvent, context: Context, callback: Callback) => any {
   return function handler(event: DynamoDBStreamEvent, context: Context, callback: Callback) {
@@ -15,7 +15,7 @@ export function dynamodbStream<T>(
   };
 }
 
-export interface DynamoDBStreamSignature<T> {
+export interface DynamoDBStreamSignature<T = any> {
   event: DynamoDBStreamEvent; // original event
   newVersions: T[]; // array of all unmarshalled javascript objects of new images
   oldVersions: T[]; // array of all unmarshalled javascript objects of old images

src/generic/wrapper.test.ts

@@ -19,7 +19,6 @@ describe('Stream wrapper', () => {
   const callback = jest.fn((err, result) => (err ? new Error(err) : result));
 
   it('Has expected properties and response funtions', () => {
-    // @ts-ignore
     function custom({ event, success, error }: WrapperSignature) {
       expect(event).toEqual(requestEvent);
       expect(success).toBeInstanceOf(Function);

src/generic/wrapper.ts

@@ -4,7 +4,7 @@ import { success, error } from './responses';
 
 const metrics = new Metrics('Generic');
 
-export function wrapper<T>(
+export function wrapper<T = any>(
   custom: (props: WrapperSignature<T>) => any
 ): (event: any, context: Context, callback: Callback) => any {
   return function handler(event: any, context: Context, callback: Callback) {
@@ -13,7 +13,7 @@ export function wrapper<T>(
   };
 }
 
-export interface WrapperSignature<T> {
+export interface WrapperSignature<T = any> {
   event: T; // original event
   success(message?: any): any; // logs and returns the message
   error(error?: any): void; // logs the error and throws

src/sns/parser.ts

@@ -1,6 +1,6 @@
 import { SNSEvent } from 'aws-lambda';
 
-export class SnsParser<T> {
+export class SnsParser<T = any> {
   constructor(private event: SNSEvent) {}
 
   getMessage(): T {

src/sns/wrapper.test.ts

@@ -21,7 +21,6 @@ describe('Stream wrapper', () => {
   const callback = jest.fn((err, result) => (err ? new Error(err) : result));
 
   it('Has expected properties and response funtions', () => {
-    // @ts-ignore
     function custom({ event, message, success, error }: SnsSignature) {
       expect(event).toEqual(requestEvent);
       expect(message).toEqual('hello world');

src/sns/wrapper.ts

@@ -5,7 +5,7 @@ import { SnsParser } from './parser';
 
 const metrics = new Metrics('Sns');
 
-export function sns<T>(
+export function sns<T = any>(
   custom: (props: SnsSignature<T>) => any
 ): (event: SNSEvent, context: Context, callback: Callback) => any {
   return function handler(event: SNSEvent, context: Context, callback: Callback) {
@@ -15,7 +15,7 @@ export function sns<T>(
   };
 }
 
-export interface SnsSignature<T> {
+export interface SnsSignature<T = any> {
   event: SNSEvent; // original event
   message: T; // JSON-parsed message from event
   success(message?: any): any; // logs and returns the message