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node_modules/pino/test/stdout-protection.test.js

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+'use strict'
+
+const test = require('node:test')
+const assert = require('node:assert')
+const { join } = require('node:path')
+const { fork } = require('node:child_process')
+const writer = require('flush-write-stream')
+
+const { once } = require('./helper')
+const pino = require('..')
+
+test('do not use SonicBoom is someone tampered with process.stdout.write', async () => {
+  let actual = ''
+  const child = fork(join(__dirname, 'fixtures', 'stdout-hack-protection.js'), { silent: true })
+
+  child.stdout.pipe(writer((s, enc, cb) => {
+    actual += s
+    cb()
+  }))
+  await once(child, 'close')
+  assert.equal(actual.match(/^hack/) != null, true)
+})
+
+test('do not use SonicBoom is someone has passed process.stdout to pino', async () => {
+  const logger = pino(process.stdout)
+  assert.equal(logger[pino.symbols.streamSym], process.stdout)
+})
+
+test('do not crash if process.stdout has no fd', async (t) => {
+  const fd = process.stdout.fd
+  delete process.stdout.fd
+  t.after(function () { process.stdout.fd = fd })
+  pino()
+})
+
+test('use fd=1 if process.stdout has no fd in pino.destination() (worker case)', async (t) => {
+  const fd = process.stdout.fd
+  delete process.stdout.fd
+  t.after(function () { process.stdout.fd = fd })
+  pino.destination()
+})