immutable-validation/lib/predicates.js

Data validation using immutable data structures

'use strict';

Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.required = required;
exports.minLength = minLength;
exports.maxLength = maxLength;
exports.between = between;

var _util = require('./util');

function required(val) {
    if (!(0, _util.isString)(val) && !(0, _util.isNumber)(val) && !(0, _util.isBoolean)(val)) return false;

    if ((0, _util.isString)(val)) {
        return val.trim().length > 0;
    }

    if (isNaN(val)) return false;

    return true;
}

function minLength(min) {
    return function (val) {
        return val.length >= min;
    };
}

function maxLength(max) {
    return function (val) {
        return val.length <= max;
    };
}

// TODO: Curried functions
function between(min, max) {
    return function (val) {
        var nVal = parseInt(val, 10);
        return nVal >= min && nVal <= max;
    };
}