Check if a CreateWriteStream is writable in Node.js using Javascript

const isWritableStream = val =>
  val !== null &&
  typeof val === 'object' &&
  typeof val.pipe === 'function' &&
  typeof val._write === 'function' &&
  typeof val._writableState === 'object';

const fs = require('fs');

isWritableStream(fs.createWriteStream('test.txt')); // true

Tags: CreateWriteStream, filesystem, fs, WriteStream, Node.js, Node, Javascript, Typescript

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