nhb-toolbox/dist/esm/form/guards.js

A versatile collection of smart, efficient, and reusable utility functions, classes and types for everyday development needs.

import { isString } from '../guards/primitives.js';
export function isValidFormData(value) {
    if (!(value instanceof FormData))
        return false;
    if ('entries' in value) {
        if (typeof value.entries !== 'function') {
            console.warn('`FormData.entries()` is not supported!');
            return false;
        }
        return Array.from(value.entries())?.length > 0;
    }
    return false;
}
export function isOriginFileObj(value) {
    if (typeof value !== 'object' || value === null || Array.isArray(value)) {
        return false;
    }
    const obj = value;
    return isString(obj.uid);
}
export function isCustomFile(value) {
    if (typeof value !== 'object' || value === null || Array.isArray(value)) {
        return false;
    }
    const obj = value;
    return 'originFileObj' in obj && isOriginFileObj(obj.originFileObj);
}
export function isCustomFileArray(value) {
    return Array.isArray(value) && value?.length > 0 && value?.every(isCustomFile);
}
export function isFileArray(value) {
    return Array.isArray(value) && value?.length > 0 && value?.every(isFileOrBlob);
}
export function isFileList(value) {
    return typeof FileList !== 'undefined' && value instanceof FileList;
}
export function isFileOrBlob(value) {
    return ((typeof File !== 'undefined' && value instanceof File) ||
        (typeof Blob !== 'undefined' && value instanceof Blob));
}
export function isFileUpload(value) {
    if (typeof value !== 'object' || value === null || Array.isArray(value)) {
        return false;
    }
    const obj = value;
    return (('file' in obj && isCustomFile(obj.file)) ||
        ('fileList' in obj && isCustomFileArray(obj.fileList)));
}