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'use strict';
const common = require('../common');
const assert = require('assert');
const { Worker } = require('worker_threads');
const { once } = require('events');
// Ensure that worker.getHeapSnapshot() returns a valid JSON
(async () => {
const worker = new Worker('setInterval(() => {}, 1000);', { eval: true });
await once(worker, 'online');
const stream = await worker.getHeapSnapshot();
assert.ok(JSON.parse(stream.read()));
await worker.terminate();
})().then(common.mustCall());
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