sequency/lib/dropWhile.js

Functional sequences for processing iterable data in JavaScript

Object.defineProperty(exports, "__esModule", { value: true });
exports.DropWhile = void 0;
var Sequence_1 = require("./Sequence");
var DropWhileIterator = /** @class */ (function () {
    function DropWhileIterator(iterator, predicate) {
        this.iterator = iterator;
        this.predicate = predicate;
        this.dropping = true;
    }
    DropWhileIterator.prototype.next = function (value) {
        for (var item = this.iterator.next(); !item.done; item = this.iterator.next()) {
            if (!this.dropping) {
                return { done: false, value: item.value };
            }
            var result = this.predicate(item.value);
            if (!result) {
                this.dropping = false;
                return { done: false, value: item.value };
            }
        }
        return { done: true, value: undefined };
    };
    return DropWhileIterator;
}());
var DropWhile = /** @class */ (function () {
    function DropWhile() {
    }
    /**
     * Drops all elements of the sequence as long as the given `predicate` evaluates to true.
     *
     * @param {(item: T) => boolean} predicate
     * @returns {Sequence<T>}
     */
    DropWhile.prototype.dropWhile = function (predicate) {
        return (0, Sequence_1.createSequence)(new DropWhileIterator(this.iterator, predicate));
    };
    return DropWhile;
}());
exports.DropWhile = DropWhile;
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