Function detectDimension

detectDimension(
    file?: File,
    resolve?: (width?: number, height?: number) => void,
    reject?: (ev?: ProgressEvent<FileReader> | ErrorEvent) => void,
): void
Read and detect the dimension of the given file
Parameters
- Optionalfile: File
  the file to inspect
- Optionalresolve: (width?: number, height?: number) => void
  the callback function to execute when the file read success
- Optionalreject: (ev?: ProgressEvent<FileReader> | ErrorEvent) => void
  the callback function to execute when the file read failure
Returns void
Author
David Hsing