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// Adapted from deno_graph// https://github.com/denoland/deno_graph/blob/main/lib/loader.ts
export interface LoadResponseModule {  /** A module with code has been loaded. */  kind: "module";  /** The string URL of the resource. If there were redirects, the final   * specifier should be set here, otherwise the requested specifier. */  specifier: string;  /** For remote resources, a record of headers should be set, where the key's   * have been normalized to be lower case values. */  headers?: Record<string, string>;  /** The string value of the loaded resources. */  content: string;}
export interface LoadResponseExternalBuiltIn {  /** The loaded module is either _external_ or _built-in_ to the runtime. */  kind: "external" | "builtIn";  /** The string URL of the resource. If there were redirects, the final   * specifier should be set here, otherwise the requested specifier. */  specifier: string;}
export type LoadResponse = LoadResponseModule | LoadResponseExternalBuiltIn;
export async function load(  specifier: string,): Promise<LoadResponse | undefined> {  const url = new URL(specifier);  try {    switch (url.protocol) {      case "file:": {        const content = await Deno.readTextFile(url);        return {          kind: "module",          specifier,          content,        };      }      case "http:":      case "https:": {        const response = await fetch(String(url), { redirect: "follow" });        if (response.status !== 200) {          // ensure the body is read as to not leak resources          await response.arrayBuffer();          return undefined;        }        const content = await response.text();        const headers: Record<string, string> = {};        for (const [key, value] of response.headers) {          headers[key.toLowerCase()] = value;        }        return {          kind: "module",          specifier: response.url,          headers,          content,        };      }      default:        return undefined;    }  } catch {    return undefined;  }}