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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
"use strict";
((window) => {
const core = window.Deno.core;
const { errors } = window.__bootstrap.errors;
const {
ArrayIsArray,
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 (error instanceof errors.BadResource) {
return { value: undefined, done: true };
} else if (error instanceof errors.Interrupted) {
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);
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