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// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.1// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
'use strict';
const common = require('../common');const dc = require('diagnostics_channel');const assert = require('assert');const { Channel } = dc;
const input = {  foo: 'bar'};
// Should not have named channelassert.ok(!dc.hasSubscribers('test'));
// Individual channel objects can be created to avoid future lookupsconst channel = dc.channel('test');assert.ok(channel instanceof Channel);
// No subscribers yet, should not publishassert.ok(!channel.hasSubscribers);
const subscriber = common.mustCall((message, name) => {  assert.strictEqual(name, channel.name);  assert.deepStrictEqual(message, input);});
// Now there's a subscriber, should publishchannel.subscribe(subscriber);assert.ok(channel.hasSubscribers);
// The ActiveChannel prototype swap should not fail instanceofassert.ok(channel instanceof Channel);
// Should trigger the subscriber oncechannel.publish(input);
// Should not publish after subscriber is unsubscribedassert.ok(channel.unsubscribe(subscriber));assert.ok(!channel.hasSubscribers);
// unsubscribe() should return false when subscriber is not foundassert.ok(!channel.unsubscribe(subscriber));
assert.throws(() => {  channel.subscribe(null);}, { code: 'ERR_INVALID_ARG_TYPE' });