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select.mjs

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  • valid.mjs 1.30 KiB
    /**
     * Copyright schukai GmbH and contributors 2022. All Rights Reserved.
     * Node module: @schukai/monster
     * This file is licensed under the AGPLv3 License.
     * License text available at https://www.gnu.org/licenses/agpl-3.0.en.html
     */
    
    import { AbstractConstraint } from "./abstract.mjs";
    import { instanceSymbol } from "../constants.mjs";
    export { Valid };
    
    /**
     * Constraints are used to define conditions that must be met by the value of a variable.
     *
     * The uniform API of the constraints allows chains to be formed.
     *
     * The valid constraint allows an always valid query to be performed. this constraint is mainly intended for testing.
     *
     * @externalExample ../../example/constraints/valid.mjs
     * @license AGPLv3
     * @since 1.3.0
     * @copyright schukai GmbH
     * @memberOf Monster.Constraints
     * @summary A constraint that always valid
     */
    class Valid extends AbstractConstraint {
        /**
         * this method return a promise containing the result of the check.
         *
         * @param {*} value
         * @returns {Promise}
         */
        isValid(value) {
            return Promise.resolve(value);
        }
    
        /**
         * This method is called by the `instanceof` operator.
         * @returns {symbol}
         * @since 2.1.0
         */
        static get [instanceSymbol]() {
            return Symbol.for("@schukai/monster/constraints/valid");
        }
    }