[bug] Inaccurate file size calculations in Dropzone

[monteri]

I encountered a bug when used maxSize prop on the Dropzone component. I passed 20 * 1024 * 1024 that equals to 20MB. When I uploaded a file of size 20.3MB the error state didn't occurred. I investigated deeper and found out that 20 * 1024 * 1024 = 20971520 that is bigger than 20312736 (the file size).

In that time the component displays the error correctly when I pass a file of 80MB. It says that File must be less than 20MB..

As a work around I passed 20 * 1000 * 1000 and obtained the desired behavior of the error state but the alert displays inaccurate value of 19.07MB.

[brian-smith-tcril]

It seems like on your local machine filesizes are calculated using decimal instead of binary

Where as react-dropzone and the utils to format byes in a user friendly format use binary instead of decimal