diginext-utils/esm/object/isNull.js

README.md

/**
 * Checks if a value is null, undefined, empty string, empty array, or empty object.
 * File instances are never considered null.
 *
 * @param value - The value to check
 * @returns True if the value is considered null/empty
 *
 * @example
 * ```ts
 * isNull(null); // true
 * isNull(undefined); // true
 * isNull(''); // true
 * isNull([]); // true
 * isNull({}); // true
 * isNull(0); // false
 * isNull('hello'); // false
 * isNull([1, 2]); // false
 * ```
 */
export function isNull(value) {
    // Check if it's a File object (browser environment)
    try {
        if (value instanceof File) {
            return false;
        }
    }
    catch (_a) {
        // File might not be defined in Node environment
    }
    if (value === undefined || value === null) {
        return true;
    }
    if (value === "") {
        return true;
    }
    if (Array.isArray(value)) {
        return value.length === 0;
    }
    if (typeof value === "object" && value !== null) {
        return Object.keys(value).length === 0;
    }
    return false;
}
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