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node_modules/pino/test/complex-objects.test.js

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+'use strict'
+
+const { test } = require('tap')
+const { sink, once } = require('./helper')
+const { PassThrough } = require('node:stream')
+const pino = require('../')
+
+test('Proxy and stream objects', async ({ equal }) => {
+  const s = new PassThrough()
+  s.resume()
+  s.write('', () => {})
+  const obj = { s, p: new Proxy({}, { get () { throw new Error('kaboom') } }) }
+  const stream = sink()
+  const instance = pino(stream)
+  instance.info({ obj })
+
+  const result = await once(stream, 'data')
+
+  equal(result.obj, '[unable to serialize, circular reference is too complex to analyze]')
+})
+
+test('Proxy and stream objects', async ({ equal }) => {
+  const s = new PassThrough()
+  s.resume()
+  s.write('', () => {})
+  const obj = { s, p: new Proxy({}, { get () { throw new Error('kaboom') } }) }
+  const stream = sink()
+  const instance = pino(stream)
+  instance.info(obj)
+
+  const result = await once(stream, 'data')
+
+  equal(result.p, '[unable to serialize, circular reference is too complex to analyze]')
+})