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for await & Readable #29428

@pgherveou

Description

@pgherveou

Hi, I am trying to consume a readable with a for await loop.
When I create the simple stream below, the console output the error straight away instead of logging the data events first. Is it the expected behavior

Version: v12.9.1
Platform: Darwin Kernel Version 18.7.0

const { Readable } = require('stream')

async function* generate() {
  yield 1
  yield 2
  yield Promise.reject('Boum')
}

;(async () => {
  try {
    for await (const d of Readable.from(generate())) {
      console.log(d)
    }
  } catch (e) {
    console.log(e)
  }
})()

the output is

Boum

instead of the expected

1
2
Boum

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