@jsenv/core/src/helpers/web_url_converter.js

Tool to develop, test and build js projects

import { ensureWindowsDriveLetter } from "@jsenv/filesystem";
import { moveUrl, urlIsOrIsInsideOf } from "@jsenv/urls";

export const WEB_URL_CONVERTER = {
  asWebUrl: (fileUrl, webServer) => {
    if (urlIsOrIsInsideOf(fileUrl, webServer.rootDirectoryUrl)) {
      return moveUrl({
        url: fileUrl,
        from: webServer.rootDirectoryUrl,
        to: `${webServer.origin}/`,
      });
    }
    const fsRootUrl = ensureWindowsDriveLetter("file:///", fileUrl);
    return `${webServer.origin}/@fs/${fileUrl.slice(fsRootUrl.length)}`;
  },
  asFileUrl: (webUrl, webServer) => {
    const { pathname, search } = new URL(webUrl);
    if (pathname.startsWith("/@fs/")) {
      const fsRootRelativeUrl = pathname.slice("/@fs/".length);
      return `file:///${fsRootRelativeUrl}${search}`;
    }
    return moveUrl({
      url: webUrl,
      from: `${webServer.origin}/`,
      to: webServer.rootDirectoryUrl,
    });
  },
};