Function getImportMap

site/demo.ts:38–49

(html: string)

};

const getImportMap = (html: string): {[specifier: string]: string} =>
  Object.assign(
    {},
    ...(html
      .match(IMPORT_MAP_SCRIPT_REGEX)
      ?.map(
        (script) =>
          JSON.parse(
            script.replace(/^<script\b[^>]*>/, '').replace(/<\/script>$/, ''),
          ).imports,
      ) ?? []),
  );

const absolutizeImportUrl = (url: string, baseUrl: string): string =>
  /^https?:\/\//.test(url) ? url : new URL(url, baseUrl).href;