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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { core, primordials } from "ext:core/mod.js";
const { BadResourcePrototype, InterruptedPrototype, ops } = core;
const {
ArrayIsArray,
ObjectPrototypeIsPrototypeOf,
PromiseResolve,
SymbolAsyncIterator,
} = primordials;
import { SymbolDispose } from "ext:deno_web/00_infra.js";
const {
op_fs_events_poll,
} = core.ensureFastOps();
class FsWatcher {
#rid = 0;
constructor(paths, options) {
const { recursive } = options;
this.#rid = ops.op_fs_events_open({ recursive, paths });
}
get rid() {
return this.#rid;
}
async next() {
try {
const value = await 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;
}
[SymbolDispose]() {
core.tryClose(this.#rid);
}
}
function watchFs(
paths,
options = { recursive: true },
) {
return new FsWatcher(ArrayIsArray(paths) ? paths : [paths], options);
}
export { watchFs };
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