import heic2any from "heic2any";
// or
const heic2any = require("heic2any");
// skip the lines above if you're not using a module bundler
// and would prefer to include a <script> tag in your HTML file

// this is our heif image file
const HEICBlobFile = new Blob();

heic2any({
	// required: the HEIF blob file
	blob: HEICBlobFile,
	// (optional) MIME type of the target file
	// it can be "image/jpeg", "image/png" or "image/gif"
	// defaults to "image/png"
	toType: "image/jpeg",
	// conversion quality
	// a number ranging from 0 to 1
	quality: 0.8
});