If you experience the error “util.pump is not a function” while running a Node.js app or a Node.js snippet, it’s because the app code is too old for the current Node.js runtime.
The pump() method that Node.js provided wrote a readable stream to a writable stream using this syntax:
util.pump(readableStream, writableStream)
This method is now gone, deprecated for a long time and removed when Node.js 6.0 was released in April 2016.
Luckily, it’s easy to fix this problem.
Replace the above syntax with:
const { pipeline } = require('stream')
//...
pipeline(readableStream, writableStream, () => {})
The third argument is a callback function that will be called when the pipeline is done.
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