sequency/lib/lastOrNull.js

Functional sequences for processing iterable data in JavaScript

Object.defineProperty(exports, "__esModule", { value: true });
exports.LastOrNull = void 0;
var LastOrNull = /** @class */ (function () {
    function LastOrNull() {
    }
    /**
     * Returns the last element of the sequence or the last element matching `predicate` if present, otherwise returns `null`.
     *
     * @param {(value: T) => boolean} predicate
     * @returns {T}
     */
    LastOrNull.prototype.lastOrNull = function (predicate) {
        if (predicate != null) {
            return this.filter(predicate).lastOrNull();
        }
        var result = null;
        for (var item = this.iterator.next(); !item.done; item = this.iterator.next()) {
            result = item.value;
        }
        return result;
    };
    /**
     * Returns the last element of the sequence or the last element matching `predicate` if present, otherwise returns `null`.
     *
     * @param {(value: T) => boolean} predicate
     * @returns {T}
     */
    LastOrNull.prototype.findLast = function (predicate) {
        return this.lastOrNull(predicate);
    };
    return LastOrNull;
}());
exports.LastOrNull = LastOrNull;
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