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  12/15/2023

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  import { GITHUB_EMOJIS } from "https://esm.town/v/karfau/GITHUB_EMOJIS";

  import { fetch } from "https://esm.town/v/std/fetch?v=4";

  
  

  export const isEmoji = (key: string) => Object.hasOwn(GITHUB_EMOJIS, key);

  
  

  export const githubEmojiUrl = (name: string, fallback = "octocat"): string =>

  GITHUB_EMOJIS[isEmoji(name) ? name : fallback];

  
  

  export const githubEmojiNames = (): string[] => Object.keys(GITHUB_EMOJIS);

  
  

  export default async function githubEmoji(req: Request): Promise<Response> {

  const contentType = req.headers.get("Content-Type");

  
  

  const nameFromURL = new URL(req.url).pathname.split("/").filter(Boolean)[0];

  if (nameFromURL === "names") {

  return Response.json(githubEmojiNames());

  }

  
  

  const url = githubEmojiUrl(nameFromURL);

  
  

  if (contentType || contentType === "application/json") {

  return Response.json(url);

  }

  try {

  return fetch(url);

  } catch (error) {

  console.error(req.url, nameFromURL, error);

  return new Response(

  "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"64\" height=\"64\" viewBox=\"218.329 117.251 67.385 67.385\" xml:space=\"preserve\"><path style=\"stroke:#e9d535;stroke-width:0;stroke-dasharray:none;stroke-linecap:butt;stroke-dashoffset:0;stroke-linejoin:miter;stroke-miterlimit:4;fill:#f72f3a;fill-rule:nonzero;opacity:1\" transform=\"translate(218.329 117.25)\" d=\"M33.693 0C52.29 0 67.385 15.094 67.385 33.693c0 18.598-15.094 33.692-33.692 33.692C15.094 67.385 0 52.291 0 33.693 0 15.094 15.094 0 33.693 0Z\"/><path style=\"stroke:none;stroke-width:1;stroke-dasharray:none;stroke-linecap:butt;stroke-dashoffset:0;stroke-linejoin:miter;stroke-miterlimit:4;fill:#fff;fill-rule:nonzero;opacity:1\" transform=\"matrix(.67385 0 0 .67385 225.067 123.99)\" d=\"M63.366 80 40 56.634 16.634 80 0 63.366 23.366 40 0 16.634 16.634 0 40 23.366 63.366 0 80 16.634 56.634 40 80 63.366 63.366 80z\"/></svg>",

  { headers: { "Content-Type": "image/svg" }, status: 307, statusText: "Currently not available" },

  );

  }

  }