chrome extension : how to fill input[type=file]?

Question

I am writing an extension that allows me to automatize file uploading.

I have that selector

let fileInput  = document.querySelector("input[type=file]")

Is there a way to fill it with my own local files ?

I could do that with nodejs/puppeteer:

const files = await Promise.all(photos);
const input = await page.$('input[type="file"]');
await input.uploadFile(...files);