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'use strict';
require('../common');
const assert = require('assert');
const { MessageChannel, MessagePort } = require('worker_threads');
// Make sure that `MessagePort` is the constructor for MessagePort instances,
// but not callable.
const { port1 } = new MessageChannel();
assert(port1 instanceof MessagePort);
assert.strictEqual(port1.constructor, MessagePort);
assert.throws(() => MessagePort(), {
constructor: TypeError,
code: 'ERR_CONSTRUCT_CALL_INVALID'
});
assert.throws(() => new MessagePort(), {
constructor: TypeError,
code: 'ERR_CONSTRUCT_CALL_INVALID'
});
assert.throws(() => MessageChannel(), {
constructor: TypeError,
code: 'ERR_CONSTRUCT_CALL_REQUIRED'
});
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