openapi-typescript-codegen/src/utils/readSpecFromHttp.ts

import { get } from 'http';

/**
 * Download the spec file from a HTTP resource
 * @param url
 */
export const readSpecFromHttp = async (url: string): Promise<string> => {
    return new Promise<string>((resolve, reject) => {
        get(url, response => {
            let body = '';
            response.on('data', chunk => {
                body += chunk;
            });
            response.on('end', () => {
                resolve(body);
            });
            response.on('error', () => {
                reject(`Could not read OpenApi spec: "${url}"`);
            });
        });
    });
};