pustovitDmytro / base-api-client

import { last } from 'myrmidon';

import createAxiosError from 'axios/lib/core/createError';

export function resolveUrl(base, relativeUrl) {

    const baseUrl = base ? new URL(base) : undefined;

    const absoluteUrl = new URL(relativeUrl, baseUrl);

    if (absoluteUrl.href === relativeUrl) {

        return new URL(absoluteUrl,  baseUrl);

    }

    const apiPrefix = last(baseUrl.pathname) === '/'

        ? baseUrl.pathname.slice(0, -1)

        : baseUrl.pathname;

    const relPath = apiPrefix

        ? apiPrefix + absoluteUrl.pathname

        : relativeUrl;

    return new URL(relPath,  baseUrl);

}