add utility typescript for specific return value for function

Dockerfile

@@ -1,6 +1,6 @@
 ## BUILD STAGE ONE
 
-FROM node:12-alpine as midtrans-node
+FROM node:14-alpine as midtrans-node
 COPY package*.json \
 	.coveralls.yml \
 	.editorconfig \
@@ -21,7 +21,7 @@ RUN apk add make \
 ## BUILD STAGE TWO
 
 FROM midtrans-node
-WORKDIR /app
-COPY --from=midtrans-node ./ /app
+WORKDIR /usr/src/app
+COPY --from=midtrans-node ./ /usr/src/app
 RUN make build
 CMD docker images

README.md

@@ -1,6 +1,6 @@
 # Midtrans Node
 
-[![Build Status](https://travis-ci.org/restuwahyu13/midtrans-node.svg?branch=main)](https://travis-ci.org/restuwahyu13/midtrans-node) [![Coverage Status](https://coveralls.io/repos/github/restuwahyu13/nodejs-midtrans-client/badge.svg?branch=main)](https://coveralls.io/github/restuwahyu13/nodejs-midtrans-client?branch=main) ![node-current](https://img.shields.io/node/v/midtrans-node-client?style=flat-square) ![npm](https://img.shields.io/npm/dm/midtrans-node-client) ![npm](https://img.shields.io/npm/dt/midtrans-node-client) ![npm bundle size](https://img.shields.io/bundlephobia/min/midtrans-node-client) ![npm bundle size (version)](https://img.shields.io/bundlephobia/minzip/midtrans-node-client) ![Snyk Vulnerabilities for npm package](https://img.shields.io/snyk/vulnerabilities/npm/midtrans-node-client?style=flat-square) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](https://github.com/restuwahyu13/midtrans-node/blob/main/CONTRIBUTING.md)
+[![Build Status](https://travis-ci.org/restuwahyu13/midtrans-node.svg?branch=main)](https://travis-ci.org/restuwahyu13/midtrans-node) [![Coverage Status](https://coveralls.io/repos/github/restuwahyu13/nodejs-midtrans-client/badge.svg?branch=main)](https://coveralls.io/github/restuwahyu13/nodejs-midtrans-client?branch=main) ![node-current](https://img.shields.io/node/v/midtrans-node-client?style=flat-square) ![npm](https://img.shields.io/npm/dm/midtrans-node-client) ![npm bundle size](https://img.shields.io/bundlephobia/min/midtrans-node-client) ![npm bundle size (version)](https://img.shields.io/bundlephobia/minzip/midtrans-node-client) ![Snyk Vulnerabilities for npm package](https://img.shields.io/snyk/vulnerabilities/npm/midtrans-node-client?style=flat-square) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](https://github.com/restuwahyu13/midtrans-node/blob/main/CONTRIBUTING.md)
 
 - [Installation](#installation)
 - [API Documentation](#api-documentation)

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "midtrans-node-client",
-	"version": "0.0.1",
+	"version": "0.0.2",
 	"description": "Unoffficial Midtrans Payment API Client for Node JS | Alternative for Midtrans Official Module",
 	"main": "./dist/index.js",
 	"files": [
@@ -10,11 +10,10 @@
 		"clean": "rimraf dist",
 		"compiler": "npm run clean && tsc --pretty",
 		"build": "npm run compiler",
-		"start": "ts-node index.ts",
 		"test": "jest",
 		"test:watch": "jest --watchAll",
-		"test:coverage": "jest --coverage --no-cache",
-		"test:coveralls": "jest --coverage --no-cache && coveralls < coverage/lcov.info",
+		"test:coverage": "jest --coverage",
+		"test:coveralls": "jest --coverage && coveralls < coverage/lcov.info",
 		"lint": "eslint src/**/*.{ts,spec.ts,test.ts} --fix",
 		"format": "prettier src/**/*.{ts,spec.ts,test.ts} --write",
 		"lint:fix": "npm run format && npm run lint"
@@ -36,6 +35,7 @@
 		"npm": ">=6"
 	},
 	"keywords": [
+		"midtrans-node-client",
 		"payment",
 		"payment gateway",
 		"midtrans",
@@ -53,7 +53,6 @@
 	},
 	"devDependencies": {
 		"@types/axios": "^0.14.0",
-		"@types/eslint": "^7.2.6",
 		"@types/jest": "^26.0.20",
 		"@types/lodash": "^4.14.167",
 		"@types/node": "^14.14.20",
@@ -72,7 +71,6 @@
 		"jest": "^26.6.3",
 		"prettier": "^2.2.1",
 		"rimraf": "^3.0.2",
-		"streambox-collection": "0.0.2",
 		"ts-jest": "^26.4.4",
 		"ts-node": "^9.1.1",
 		"typescript": "^4.1.3"

src/lib/apiConfig.ts

@@ -32,7 +32,7 @@ export class ApiConfig {
 	 * @return {Object} object contains isProduction, serverKey, clientKey
 	 */
 
-	public get(): ApiConfigGetter {
+	public get(): ReturnType<() => ApiConfigGetter> {
 		const currentConfig: ApiConfigOptions = {
 			isProduction: this.isProduction,
 			serverKey: this.serverKey,
@@ -46,7 +46,7 @@ export class ApiConfig {
 	 * @param {Object} options - object contains isProduction, serverKey, clientKey]
 	 */
 
-	public set<T extends Partial<ApiConfigOptions>>(options: T | Record<any, any>): void {
+	public set<T extends Partial<ApiConfigOptions>>(options: T | Record<any, any>): ReturnType<() => void> {
 		const currentConfig: ApiConfigOptions = {
 			isProduction: this.isProduction,
 			serverKey: this.serverKey,
@@ -65,23 +65,23 @@ export class ApiConfig {
 	 * @return {String} core api base url
 	 */
 
-	public getCoreApiBaseUrl(): string {
+	public getCoreApiBaseUrl(): ReturnType<() => string> {
 		return this.isProduction ? ApiConfig.CORE_PRODUCTION_BASE_URL : ApiConfig.CORE_SANDBOX_BASE_URL
 	}
 
 	/**
 	 * @return {String} snap api base url
 	 */
 
-	public getSnapApiBaseUrl(): string {
+	public getSnapApiBaseUrl(): ReturnType<() => string> {
 		return this.isProduction ? ApiConfig.SNAP_PRODUCTION_BASE_URL : ApiConfig.SNAP_SANDBOX_BASE_URL
 	}
 
 	/**
 	 * @return {String} Iris api base url
 	 */
 
-	public getIrisApiBaseUrl(): string {
+	public getIrisApiBaseUrl(): ReturnType<() => string> {
 		return this.isProduction ? ApiConfig.IRIS_PRODUCTION_BASE_URL : ApiConfig.IRIS_SANDBOX_BASE_URL
 	}
 }

src/lib/coreApi.ts

@@ -39,7 +39,7 @@ export class CoreApi {
 
 	public charge<T extends Partial<ChargeTypeRequest>>(
 		parameter: T | Record<string, any>
-	): Promise<Record<string, any>> {
+	): ReturnType<() => Promise<Record<string, any>>> {
 		this.apiUrl = this.apiConfig.getCoreApiBaseUrl() + '/charge'
 		const res = parameter
 		return this.httpClient.request({
@@ -57,7 +57,9 @@ export class CoreApi {
 	 * @return {Promise} - Promise contains Object from JSON decoded response
 	 */
 
-	public capture<T extends Partial<CaptureRequest>>(parameter: T | Record<string, any>): Promise<Record<string, any>> {
+	public capture<T extends Partial<CaptureRequest>>(
+		parameter: T | Record<string, any>
+	): ReturnType<() => Promise<Record<string, any>>> {
 		this.apiUrl = this.apiConfig.getCoreApiBaseUrl() + '/capture'
 		return this.httpClient.request({
 			requestUrl: this.apiUrl,
@@ -75,7 +77,7 @@ export class CoreApi {
 
 	public cardRegister<T extends Partial<CardRegisterRequest>>(
 		parameter: T | Record<any, any>
-	): Promise<Record<string, any>> {
+	): ReturnType<() => Promise<Record<string, any>>> {
 		this.apiUrl = this.apiConfig.getCoreApiBaseUrl() + '/card/register'
 		return this.httpClient.request({
 			requestUrl: this.apiUrl,
@@ -93,7 +95,7 @@ export class CoreApi {
 
 	public cardToken<T extends Partial<CardTokenRequest>>(
 		parameter: T | Record<string, any>
-	): Promise<Record<string, any>> {
+	): ReturnType<() => Promise<Record<string, any>>> {
 		this.apiUrl = this.apiConfig.getCoreApiBaseUrl() + '/token'
 		return this.httpClient.request({
 			requestUrl: this.apiUrl,
@@ -109,7 +111,7 @@ export class CoreApi {
 	 * @return {Promise} - Promise contains Object from JSON decoded response
 	 */
 
-	public cardPointInquiry(tokenId: string): Promise<Record<string, any>> {
+	public cardPointInquiry(tokenId: string): ReturnType<() => Promise<Record<string, any>>> {
 		this.apiUrl = this.apiConfig.getCoreApiBaseUrl() + '/point_inquiry/' + tokenId
 		return this.httpClient.request({
 			requestUrl: this.apiUrl,

src/lib/httpClient.ts

@@ -32,7 +32,9 @@ export class HttpClient {
 		this.requestParam = {}
 	}
 
-	public request<T extends Partial<RequestOptions>>(options: T | Record<any, any>): Promise<Record<string, any>> {
+	public request<T extends Partial<RequestOptions>>(
+		options: T | Record<any, any>
+	): ReturnType<() => Promise<Record<string, any>>> {
 		const headers = this.headers
 
 		let requestBody = this.requestBody