Error using async and await with filereader
If you want to do it with promises then you could use the Response constructor (part of fetch api)
async readFile(event) { const file = event.target.files[0] if (file) { // return this.processFileContent(await file.text()) const data = await new Response(file).text() this.processFileContent(data) }}Update
Now it's possible to just use blob.text() to return a promise that resolves with the text content, doe it's not available in all browser, see Browser Compatibility@MDN
Needed to leverage reader to convert blob to base64, prefer to use async-await syntax so I chose to extract reader logic into helper like this:
//* Convert resBlob to base64export const blobToData = (blob: Blob) => { return new Promise((resolve) => { const reader = new FileReader() reader.onloadend = () => resolve(reader.result) reader.readAsDataURL(blob) })}and calling it using await in main code:
//* Convert resBlob to dataUrl and resolveconst resData = await blobToData(resBlob)