Turn a string into native typed value

// trim() Polyfill
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim
if (!String.prototype.trim) {
    String.prototype.trim = function () {
        return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
    };
}

/**
 * Turns string to native.
 *
 * Example:
 *   'true' -> true
 *    '1' -> 1
 *
 * hat-tip:
 * https://github.com/typicode/json-server/blob/master/src/server/utils.js
 *
 * @param {string} value The string value to transform.
 * @return {mixed} The native typed value.
 */
function toNative(value) {
    if (typeof value === 'string') {
        if (value === '' || value.trim() !== value || (value.length > 1 && value[0] === '0')) {
            return value
        } else if (value === 'true' || value === 'false') {
            return value === 'true'
        } else if (!isNaN(+value)) {
            return +value
        }
    }
    return value
}