@aws-amplify/ui
Version:
`@aws-amplify/ui` contains low-level logic & styles for stand-alone usage or re-use in framework-specific implementations.
30 lines (28 loc) • 878 B
JavaScript
/**
* Format bytes as human-readable text.
*
* @param bytes Number of bytes.
* @param si True to use metric (SI) units, aka powers of 1000. False to use
* binary (IEC), aka powers of 1024.
* @param dp Number of decimal places to display.
*
* @return Formatted string.
*/
function humanFileSize(bytes, si = false, dp = 1) {
const thresh = si ? 1000 : 1024;
if (Math.abs(bytes) < thresh) {
return `${bytes} B`;
}
const units = si
? ['kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']
: ['KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];
let unit = -1;
const range = 10 ** dp;
do {
bytes /= thresh;
++unit;
} while (Math.round(Math.abs(bytes) * range) / range >= thresh &&
unit < units.length - 1);
return bytes.toFixed(dp) + ' ' + units[unit];
}
export { humanFileSize };