Files
keycloak_theme/src/lib/BASE_URL.ts

45 lines
1.2 KiB
TypeScript

import { assert } from "tsafe/assert";
/**
* WARNING: Internal use only!!
* THIS DOES NOT WORK IN KEYCLOAK! It's only for resolving mock assets.
* This is just a way to know what's the base url that works
* both in webpack and vite.
* You can see this as a polyfill that return `import.meta.env.BASE_URL` when in Vite
* and when in Webpack returns the base url in the same format as vite does meaning
* "/" if hosted at root or "/foo/" when hosted under a subpath (always start and ends with a "/").
*/
export const BASE_URL = (() => {
vite: {
let BASE_URL: string;
try {
// @ts-expect-error
BASE_URL = import.meta.env.BASE_URL;
assert(typeof BASE_URL === "string");
} catch {
break vite;
}
return BASE_URL;
}
webpack: {
let BASE_URL: string;
try {
// @ts-expect-error
BASE_URL = process.env.PUBLIC_URL;
assert(typeof BASE_URL === "string");
} catch {
break webpack;
}
return BASE_URL === "" ? "/" : `${BASE_URL}/`;
}
throw new Error("Bundler not supported");
})();