import { xor } from "https://deno.land/std@0.128.0/node/_crypto/crypto_browserify/browserify_aes/xor.ts";
The Standard Library has been moved to JSR. See the blog post for details.
import { xor } from "https://deno.land/std@0.128.0/node/_crypto/crypto_browserify/browserify_aes/xor.ts";