verificator/es/rules/in.js

Client and server-side validation JavaScript library

import requireParameterCount from './helpers/requireParameterCount';
const validate = (attribute, value, parameters, validator) => {
    requireParameterCount(1, parameters, 'in');
    if (Array.isArray(value) && validator.hasRule(attribute, 'array')) {
        for (let element of value) {
            if (Array.isArray(element)) {
                return false;
            }
        }
        return value.filter(v => parameters.indexOf(v) === -1).length === 0;
    }
    return !Array.isArray(value) && parameters.indexOf(String(value)) > -1;
};
export default validate;