text: // Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
  "use strict";
  
  ((window) => {
    const core = window.Deno.core;
    const { BadResourcePrototype, InterruptedPrototype } = core;
    const {
      ArrayIsArray,
      ObjectPrototypeIsPrototypeOf,
      PromiseResolve,
      SymbolAsyncIterator,
    } = window.__bootstrap.primordials;
    class FsWatcher {
      #rid = 0;
  
      constructor(paths, options) {
        const { recursive } = options;
        this.#rid = core.opSync("op_fs_events_open", { recursive, paths });
      }
  
      get rid() {
        return this.#rid;
      }
  
      async next() {
        try {
          const value = await core.opAsync("op_fs_events_poll", this.rid);
          return value
            ? { value, done: false }
            : { value: undefined, done: true };
        } catch (error) {
          if (ObjectPrototypeIsPrototypeOf(BadResourcePrototype, error)) {
            return { value: undefined, done: true };
          } else if (
            ObjectPrototypeIsPrototypeOf(InterruptedPrototype, error)
          ) {
            return { value: undefined, done: true };
          }
          throw error;
        }
      }
  
      // TODO(kt3k): This is deprecated. Will be removed in v2.0.
      // See https://github.com/denoland/deno/issues/10577 for details
      return(value) {
        core.close(this.rid);
        return PromiseResolve({ value, done: true });
      }
  
      close() {
        core.close(this.rid);
      }
  
      [SymbolAsyncIterator]() {
        return this;
      }
    }
  
    function watchFs(
      paths,
      options = { recursive: true },
    ) {
      return new FsWatcher(ArrayIsArray(paths) ? paths : [paths], options);
    }
  
    window.__bootstrap.fsEvents = {
      watchFs,
    };
  })(this);
  