Add APIUrl option to module API

Author: bcomnes

README.md

@@ -95,6 +95,7 @@ const netlifyIdentity = require("netlify-identity-widget");
 
 netlifyIdentity.init({
   container: "#netlify-modal" // defaults to document.body,
+  APIUrl: "https://some-identity-instance.example.com" // Set an absolute URL for the identity endpoint
 });
 
 netlifyIdentity.open(); // open the modal

src/netlify-identity.js

@@ -71,9 +71,12 @@ const localHosts = {
   "0.0.0.0": true
 };
 
-function instantiateGotrue() {
+function instantiateGotrue(APIUrl) {
   const isLocal = localHosts[document.location.host.split(":").shift()];
   const siteURL = isLocal && localStorage.getItem("netlifySiteURL");
+  if (APIUrl) {
+    return new GoTrue({ APIUrl, setCookie: !isLocal });
+  }
   if (isLocal && siteURL) {
     const parts = [siteURL];
     if (!siteURL.match(/\/$/)) {
@@ -175,8 +178,8 @@ function runRoutes() {
   }
 }
 
-function init(options) {
-  options = options || {};
+function init(options = {}) {
+  const { APIUrl } = options;
   const controlEls = document.querySelectorAll(
     "[data-netlify-identity-menu],[data-netlify-identity-button]"
   );
@@ -195,8 +198,8 @@ function init(options) {
     );
   });
 
-  store.init(instantiateGotrue());
-  if (options.hasOwnProperty("logo")) store.modal.logo = options.logo;
+  store.init(instantiateGotrue(APIUrl));
+  if (options.logo) store.modal.logo = options.logo;
   iframe = document.createElement("iframe");
   iframe.id = "netlify-identity-widget";
   iframe.onload = () => {