Simple NodeJS class for creating a Readable Stream from a String

readable-string.ts

import { Readable } from 'stream'

class ReadableString extends Readable {
  private sent = false

  constructor(private str: string) {
    super();
  }

  _read() {
    if (!this.sent) {
      this.push(Buffer.from(this.str));
      this.sent = true
    }
    else {
      this.push(null)
    }
  }
}

export async function uploadJson() {

  const contentStream = new ReadableString(JSON.stringify({
    my_json_data: true
  }))
  
  const result = await drive.files.create({
    ...
    media: {
      mimeType: 'application/json',
      body: contentStream,
    },
  })
  
  ...