// The entry for every host but Node (the "default" export condition): browsers, workers,
// service workers, Deno, workerd. Engines load with fetch, compiling as the bytes arrive,
// so the server must send build/*.wasm as application/wasm. There is no synchronous
// fetch, so `transformSync` and `engine` work only once `transform` has compiled that
// mode's engine; before then they throw.
import { bind, defaultUrl } from "./core.js";

const fatal = new TextDecoder("utf-8", { fatal: true });

export const { transform, transformSync, engine } = bind({
  url: defaultUrl,
  compileSync() {
    throw new Error("typestrip: this host can't load the engine synchronously; await transform() once before calling transformSync()");
  },
  compile: (url) => WebAssembly.compileStreaming(fetch(url)),
  isUtf8(bytes) {
    try {
      fatal.decode(bytes);
      return true;
    } catch {
      return false;
    }
  },
  isAscii(bytes) {
    for (let i = 0; i < bytes.length; i++) if (bytes[i] > 0x7f) return false;
    return true;
  },
});

export { UnsupportedSyntaxError } from "./core.js";