Promise support

[Darker]

It would be nice to have a promisified version of the function. For now, I use this:

function ExifPromise(path) {
    return new Promise(function (resolve, reject) {
        try {
            new ExifImage({ image: path }, function (error, exifData) {
                if (error)
                    reject(error);
                else
                    resolve(exifData);
            });
        } catch (error) {
            reject(error);
        }
    });
}

[mohshbool]

This is my typescript-ready version of it

import Exif, { ExifImage } from 'exif';

function ExifPromise(path: string | Buffer): Promise<Exif.ExifData> {
  return new Promise(function(resolve, reject) {
    try {
      new ExifImage({ image: path }, function(error, exifData) {
        if (error) reject(error);
        else resolve(exifData);
      });
    } catch (error) {
      reject(error);
    }
  });
}

[lancedolan]

I came here to create a promise request and BOOM it's the top issue.

[Darker]

Hey just a heads up. It turns out this package reads the whole image and is very slow. I am now using fast-exif package.