@ismail424/svelte-formly/utils/validation/rules/file.js

<p align="center"> <img width="100%" height="300" src="./logo.png" alt="Svelte Formly" /> </p>

/**
 * Convert byts to diffirents sizes types.
 * @param {number} bytes
 */
export function bytesToSize(bytes) {
    const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
    if (bytes === 0)
        return 'n/a';
    const bytes_flor = Math.floor(Math.log(bytes) / Math.log(1024));
    const i = parseInt(bytes_flor.toString(), 10);
    if (i === 0)
        return `${bytes} ${sizes[i]})`;
    return `${(bytes / 1024 ** i).toFixed(1)} ${sizes[i]}`;
}
/**
 * Get extension file.
 * @param {file} file.
 */
export function getFileExtension(file) {
    // Check if file exists and has a name property
    if (!file || !file.name) {
        return '';
    }
    const filenameParts = file.name.split('.');
    // If there's only one part (no dots) or empty filename, return empty string
    if (filenameParts.length <= 1) {
        return '';
    }
    return filenameParts[filenameParts.length - 1].toLowerCase();
}
/**
 * Validate by types.
 * @param {file} file .file object.
 * @param {array} allowedFileTypes list allowed types file.
 */
export function extensions(file, allowedFileTypes) {
    if (!allowedFileTypes.includes(getFileExtension(file))) {
        return false;
    }
    return true;
}
/**
 * Validate by size.
 * @param {file} file .file object.
 * @param {number} maxFileSize max size file.
 */
export function maxSize(file, maxFileSize) {
    const maxSize = parseFloat(maxFileSize) * 1024 * 1024;
    if (file.size > maxSize) {
        return false;
    }
    return true;
}