sequency/lib/firstOrNull.js

Functional sequences for processing iterable data in JavaScript

Object.defineProperty(exports, "__esModule", { value: true });
exports.FirstOrNull = void 0;
var FirstOrNull = /** @class */ (function () {
    function FirstOrNull() {
    }
    /**
     * Returns the first element of the sequence or the first element matching `predicate` if present, otherwise returns `null`.
     *
     * @param {(T) => boolean} predicate
     * @returns {T}
     */
    FirstOrNull.prototype.firstOrNull = function (predicate) {
        if (predicate != null) {
            return this.filter(predicate).firstOrNull();
        }
        var item = this.iterator.next();
        return item.done
            ? null
            : item.value;
    };
    /**
     * Returns the first element of the sequence or the first element matching `predicate` if present, otherwise returns `null`.
     *
     * @param {(T) => boolean} predicate
     * @returns {T}
     */
    FirstOrNull.prototype.find = function (predicate) {
        return this.firstOrNull(predicate);
    };
    return FirstOrNull;
}());
exports.FirstOrNull = FirstOrNull;
//# sourceMappingURL=firstOrNull.js.map