Function formatFileSize

formatFileSize(bytes: number, decimals?: number): string
Format a byte count to a human-readable file size string.

Uses binary units (1 KB = 1024 bytes) which is standard for file sizes.
Parameters
- bytes: number
  Number of bytes
- decimals: number = 2
  Number of decimal places (default: 2)
Returns string
Formatted file size string (e.g., "1.5 MB")
Example
```
formatFileSize(0); // "0 Bytes"
formatFileSize(1024); // "1 KB"
formatFileSize(1536); // "1.5 KB"
formatFileSize(1048576); // "1 MB"
formatFileSize(1073741824); // "1 GB"
formatFileSize(1536, 0); // "2 KB"
```
- Defined in lib/formatters.ts:111