Readme
- Fork this val
- Create a Gist on Github, containing a javascript module
- the module must have either exactly one export or a default export
- the export must be a function that accept a request and return a response
- In the gist url, replace
gist.github.com/<username>by<username>-rungist.web.val.run
For security reasons, only gists with a github username matching your val username are allowed to run on your account.
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import { extractValInfo } from "https://esm.town/v/pomdtr/extractValInfo";
import { fetchJSON } from "https://esm.town/v/stevekrouse/fetchJSON?v=42";
export default async function (req: Request) {
const url = new URL(req.url);
const [, id, action] = url.pathname.split("/");
if (!id) {
return new Response("Invalid Request", { status: 400 });
}
const { author, url: valUrl } = extractValInfo(import.meta.url);
if (action == "gist") {
return Response.redirect(`https://gist.github.com/${author}/${id}`);
}
if (action == "val") {
return Response.redirect(valUrl);
}
if (action == "edit") {
return Response.redirect(`https://gist.github.com/${author}/${id}/edit`);
}
if (action == "raw") {
Response.redirect(`https://gist.github.com/${author}/${id}/raw`);
}
const gist = await fetchJSON(`https://api.github.com/gists/${id}`);
if (gist.owner.login != author) {
return new Response("Unauthorized", {
status: 401,
});
}
const files = Object.values(gist.files) as any[];
if (files.length > 1) {
return new Response("Gist should only contain one file", {
status: 422,
});
}
const module = await import(files[0].raw_url);
if (module.default) {
return module.default(req);
}
const exports = Object.values(module) as any[];
if (exports.length > 0) {
return new Response("Gists should only contain one export", {
status: 422,
});
}
return exports[0](req);
}
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