ReferenceError: FileReader is not defined in node js (nest js)

Question

I am trying to convert my image to base64. So I create this function for this. But the problem is when I try to run my program I have an error called ReferenceError: FileReader is not defined . I have no idea what is this error about.

This is my code..?

const toDataURL = url => fetch(url)
  .then(response => response.blob())
  .then(blob => new Promise((resolve, reject) => {
    const reader = new FileReader()
    reader.onloadend = () => resolve(reader.result)
    reader.onerror = reject
    reader.readAsDataURL(blob)
  }).catch((error) => {
     console.log(error);
  });
)


toDataURL('https://www.gravatar.com/avatar/d50c83cc0c6523b4d3f6085295c953e0')
  .then(dataUrl => {
    console.log('RESULT:', dataUrl)
  })

Answer 1

FileReader is part of Web API in a browser but not in Node.js Try to use native Node.js method to read from a file or try to search an appropriate npm package