/** @jsxImportSource https://esm.sh/react */ import { extractValInfo } from "https://esm.town/v/pomdtr/extractValInfo?v=27"; import { blob } from "https://esm.town/v/std/blob?v=12"; import { Buffer } from "node:buffer"; import { createHash } from "node:crypto"; import { renderToString } from "npm:react-dom/server"; const { author, name } = extractValInfo(import.meta.url); const WASM_BLOB_PREFIX = `${author}-${name}-wasm-wasm-blob`; async function readAllBytes(stream: ReadableStream): Promise { const reader = stream.getReader(); const chunks: Uint8Array[] = []; let result: ReadableStreamReadResult; while (!(result = await reader.read()).done) { chunks.push(result.value); } // Concatenate all chunks into one Buffer const concatenated = Buffer.concat(chunks.map(chunk => Buffer.from(chunk))); return concatenated; } function getSha256Hash(buffer: Buffer): string { const hash = createHash("sha256"); hash.update(buffer); return hash.digest("hex"); } function trimPrefix(str, prefix) { if (str.startsWith(prefix)) { return str.slice(prefix.length); } return str; } const keyToURL = (key: string) => { return `https://${author}-${name}.web.val.run/${trimPrefix(key, WASM_BLOB_PREFIX)}.wasm`; }; export default async function(req: Request): Promise { if (req.method === "POST") { const body = await readAllBytes(req.body); // Check to be sure the binary body starts with "\0asm" if (!body.slice(0, 4).equals(Buffer.from([0x00, 0x61, 0x73, 0x6D]))) { return new Response("The request body is not a WASM binary", { status: 400 }); } const key = WASM_BLOB_PREFIX + getSha256Hash(body); await blob.set(key, body); console.log(keyToURL(key)); return Response.json({ url: keyToURL(key) }); } const files = await blob.list(WASM_BLOB_PREFIX); return new Response( renderToString(

{files.map(file => (

{keyToURL(file.key)}

))}

WASM Blob	Date

, ), { headers: { "content-type": "text/html" }, }, ); }

wasmBlobHost

Versions

v0