unicorn/prefer-blob-reading-methods Pedantic ​
What it does ​
Recommends using Blob#text() and Blob#arrayBuffer() over FileReader#readAsText() and FileReader#readAsArrayBuffer().
Why is this bad? ​
FileReader predates promises, and the newer Blob#arrayBuffer() and Blob#text() methods are much cleaner and easier to use.
Example ​
javascript
async function bad() {
const arrayBuffer = await new Promise((resolve, reject) => {
const fileReader = new FileReader();
fileReader.addEventListener("load", () => {
resolve(fileReader.result);
});
fileReader.addEventListener("error", () => {
reject(fileReader.error);
});
fileReader.readAsArrayBuffer(blob);
});
}
async function good() {
const arrayBuffer = await blob.arrayBuffer();
}