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APIClient.ts

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/**

* API client example.

import { IncomingMessage, request } from 'http';

const handleResponse = (resolve: (data: string) => void, reject: (data: Error) => void, response: IncomingMessage): void => {

let chunk = '';

const { statusCode } = response;

if (statusCode !== 200) {

reject(new Error('Server error'));

}

response.setEncoding('utf8')

.on('error', reject)

.on('uncaughtException', reject)

.on('data', (data: string) => chunk += data)

.on('end', () => { resolve(chunk); });

};

const ping = async (): Promise<string> => new Promise((resolve: (data: string) => void, reject: (data: Error) => void) => {

const post = request({

path: '/',

port: 8080,

method: 'GET',

hostname: 'localhost',

headers: {

'Content-Type': 'text/plain'

}

});

const curriedHandleResponse = ((response: IncomingMessage) => { handleResponse(resolve, reject, response); });

post.write('ping');

post.on('response', curriedHandleResponse);

post.on('error', () => { reject(new Error('Request error')); });

post.end();

});

ping().then(console.log).catch(console.error);