ng2-translate/src/util.js

An implementation of angular translate for Angular 2

/* tslint:disable */
/**
 * @name equals
 *
 * @description
 * Determines if two objects or two values are equivalent.
 *
 * Two objects or values are considered equivalent if at least one of the following is true:
 *
 * * Both objects or values pass `===` comparison.
 * * Both objects or values are of the same type and all of their properties are equal by
 *   comparing them with `equals`.
 *
 * @param {*} o1 Object or value to compare.
 * @param {*} o2 Object or value to compare.
 * @returns {boolean} True if arguments are equal.
 */
export function equals(o1, o2) {
    if (o1 === o2)
        return true;
    if (o1 === null || o2 === null)
        return false;
    if (o1 !== o1 && o2 !== o2)
        return true; // NaN === NaN
    var t1 = typeof o1, t2 = typeof o2, length, key, keySet;
    if (t1 == t2 && t1 == 'object') {
        if (Array.isArray(o1)) {
            if (!Array.isArray(o2))
                return false;
            if ((length = o1.length) == o2.length) {
                for (key = 0; key < length; key++) {
                    if (!equals(o1[key], o2[key]))
                        return false;
                }
                return true;
            }
        }
        else {
            if (Array.isArray(o2)) {
                return false;
            }
            keySet = Object.create(null);
            for (key in o1) {
                if (!equals(o1[key], o2[key])) {
                    return false;
                }
                keySet[key] = true;
            }
            for (key in o2) {
                if (!(key in keySet) && typeof o2[key] !== 'undefined') {
                    return false;
                }
            }
            return true;
        }
    }
    return false;
}
/* tslint:enable */
export function isDefined(value) {
    return typeof value !== 'undefined' && value !== null;
}