guarder/lib/guards/EmptyGuard.js

Guarder provides simple validation logic to reduce clutter with inline guard statements

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Guarder_1 = require("../Guarder");
const ArgumentError_1 = require("../errors/ArgumentError");
/**
 * Empty Guard ensures that the property is not null or undefined. A string should contain at least one character, an
 * array should contain at least one item, an object should contain at least one key
 */
class EmptyGuard {
    /**
     * @inheritDoc
     */
    guard(property, errorMessage, error) {
        const message = errorMessage !== null && errorMessage !== void 0 ? errorMessage : 'Property not allowed to be empty';
        Guarder_1.Guarder.null(property, message, error);
        Guarder_1.Guarder.undefined(property, message, error);
        const isEmptyString = typeof property === 'string' ? property === '' : false;
        const isArrayEmpty = Array.isArray(property) ? property.length === 0 : false;
        const isObjectEmpty = typeof property === 'object' ? Object.keys(property)
            .length === 0 : false;
        if (isEmptyString || isArrayEmpty || isObjectEmpty) {
            if (error)
                throw new error(message);
            throw new ArgumentError_1.ArgumentError(message);
        }
        return property;
    }
}
exports.EmptyGuard = EmptyGuard;
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