@gravityforms/utils/src/data/format-file-size.js

JavaScript utilities for Gravity Forms development.

/**
 * @module formatFileSize
 * @description Converts a file size in bytes into a human-readable string.
 *
 * @since 1.0.0
 *
 * @param {number} bytes File size in bytes.
 *
 * @return {string} Human-readable file size string.
 *
 * @example
 * import { formatFileSize } from "@gravityforms/utils";
 *
 * formatFileSize(500);
 * // => "500 Bytes"
 *
 * formatFileSize(2048);
 * // => "2.0 KB"
 *
 * formatFileSize(1048576);
 * // => "1.0 MB"
 *
 */
export default function formatFileSize( bytes ) {
	if ( bytes < 1024 ) {
		return `${ bytes } Bytes`;
	}

	if ( bytes < 1048576 ) {
		return `${ ( bytes / 1024 ).toFixed( 1 ) } KB`;
	}

	if ( bytes < 1073741824 ) {
		return `${ ( bytes / 1048576 ).toFixed( 1 ) } MB`;
	}

	return `${ ( bytes / 1073741824 ).toFixed( 1 ) } GB`;
}