Add a section about Typescript

[cjonasw]

[timofeysie]

I'm trying to use it like this:

import * as gmi from 'gm';

export class ImageService {

  findOne(imagePath: string) {
    gmi.(imagePath).identify(function (err, value) {
      console.log(value);
      if (err) {
        console.log(err);
      }
    });
    return `This action returns a #${imagePath} image`;
  }

But the result is:

TypeError: gmi is not a function

[timofeysie]

Sorry for the consusion. import gm from 'gm'; does work.