urljoins

Trailing-Slash compatible join utility.

Install

npm i urljoins

Usage

import {urljoins} from "urljoins";

console.log(urljoins("a.test/", "/a", "b")); // a.test/a/b

Try on https://npm.runkit.com/urljoins

var urljoins = require("urljoins").urljoins;

console.log(urljoins("a.test", {key1: "v1", key2: "v2"})); // a.test?key1=v1&key2=v2

Feature

Trailing-Slash compatible.

urljoins("a.test", "/a", "b"); // a.test/a/b
urljoins("a.test/", "/a", "b", "c"); // a.test/a/b/c

Spread key-value objects.

urljoins("a.test", {key1: "v1", key2: "v2"}); // a.test?key1=v1&key2=v2
urljoins("a.test", {key1: "v1", key2: undefined, key3:"v3"}); // a.test?key1=v1&key2=&key3=v3
urljoins("a.test", {key1: "v1", key2: null, key3: "v3"}); // same as undefined value
urljoins("a.test", {key1: "v1", key2: "v2"}, "/a"); // a.test?key1=v1&key2=v2&/a
urljoins("a.test", {keys: ["v1", "v2"]}); // a.test?keys[]=v1&keys[]=v2

Some other trailing (or heading) treatments.

urljoins("a.test?", "?a", "b"); // a.test?a&b

Notes

Parameter Orders

Parameter-Orders are strict.
When first "?" delimiter is found, all remaining strings are joined as query.

/*
 it returns "a.test?key1=v1&/a"
 not "a.test/a?key1=v1"
 */
urljoin("a.test?key1=v1", "/a");

Array(s) of strings

urljoins receives Rest Parameter. So you can spread any string[];

const paths = ["a.test", "a", "b"];
urljoins(...paths); // same as urljoins("a.test", "a", "b");