Files
Signal-Desktop/ts/types/MIME.ts
2018-04-30 16:53:34 -04:00

7 lines
377 B
TypeScript

export type MIMEType = string & { _mimeTypeBrand: any };
export const isJPEG = (value: MIMEType): boolean => value === 'image/jpeg';
export const isImage = (value: MIMEType): boolean => value.startsWith('image/');
export const isVideo = (value: MIMEType): boolean => value.startsWith('video/');
export const isAudio = (value: MIMEType): boolean => value.startsWith('audio/');