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console: avoid adding infinite error listeners
If the console destination is a unix pipe (net.Socket), write() is async. If the destination is broken, we are adding an 'error' event listener to avoid a process crash. This PR makes sure that we are adding that listener only once. Fixes: #16767
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,24 @@ | ||
'use strict'; | ||
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const common = require('../common'); | ||
const { Writable } = require('stream'); | ||
const { Console } = require('console'); | ||
const { EventEmitter } = require('events'); | ||
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const stream = new Writable({ | ||
write(chunk, enc, cb) { | ||
cb(); | ||
}, | ||
writev(chunks, cb) { | ||
setTimeout(cb, 10, new Error('kaboom')); | ||
} | ||
}); | ||
const myConsole = new Console(stream, stream); | ||
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process.on('warning', common.mustNotCall); | ||
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stream.cork(); | ||
for (let i = 0; i < EventEmitter.defaultMaxListeners + 1; i++) { | ||
myConsole.log('a message'); | ||
} | ||
stream.uncork(); |