constants.js

export const supportedCompositionOperations = {
  sourceOver: 'source-over',
  sourceIn: 'source-in',
  sourceOut: 'source-out',
  sourceAtop: 'source-atop',
  destinationOver: 'destination-over',
  destinationIn: 'destination-in',
  destinationOut: 'destination-out',
  destinationAtop: 'destination-atop',
  lighter: 'lighter',
  copy: 'copy',
  xor: 'xor',
  multiply: 'multiply',
  screen: 'screen',
  overlay: 'overlay',
  darken: 'darken',
  lighten: 'lighten',
  colorDodge: 'color-dodge',
  colorBurn: 'color-burn',
  hardLight: 'hard-light',
  softLight: 'soft-light',
  difference: 'difference',
  exclusion: 'exclusion',
  hue: 'hue',
  saturation: 'saturation',
  color: 'color',
  luminosity: 'luminosity'
}

export const supportedImageSourceTypes = {
  image: '[object HTMLImageElement]',
  string: '[object String]',
  file: '[object File]'
}