awesome-cordova-plugins/src/plugins/screenshot.ts

import {Cordova, Plugin} from './plugin';
declare var navigator: any;
@Plugin({
  plugin: 'https://github.com/gitawego/cordova-screenshot.git',
  pluginRef: 'navigator.screenshot',
  repo: 'https://github.com/gitawego/cordova-screenshot.git'
})
export class Screenshot {

/**
 *  Takes screenshot and saves the image
 *
 * @param {string} format. Format can take the value of either 'jpg' or 'png'
 * On ios, only 'jpg' format is supported
 * @param {number} quality. Determines the quality of the screenshot.
 *        Default quality is set to 100.
 * @param {string} filename. Name of the file as stored on the storage
 */
  static save (format?: string, quality?: number, filename?: string): Promise<any> {
    return new Promise<any>(
      (resolve, reject) => {
        navigator.screenshot.save(
          (error, result) => {
            if (error) {
              reject(error);
            }else {
              resolve(result);
            }
          },
          format,
          quality,
          filename
        );
      }
    );
  }

/**
 *  Takes screenshot and returns the image as an URI
 *
 * @param {number} quality. Determines the quality of the screenshot.
 *        Default quality is set to 100.
 */
  static URI (quality?: number): Promise<any> {
    return new Promise<any>(
      (resolve, reject) => {
        navigator.screenshot.URI(
          (error, result) => {
            if (error) {
              reject(error);
            }else {
              resolve(result);
            }
          },
          quality
        );
      }
    );
   }
}