sequency/lib/indexOfFirst.js

Functional sequences for processing iterable data in JavaScript

Object.defineProperty(exports, "__esModule", { value: true });
exports.IndexOfFirst = void 0;
var IndexOfFirst = /** @class */ (function () {
    function IndexOfFirst() {
    }
    /**
     * Returns the zero-based index of the first element matching the given `predicate` or -1 if no element matches
     * the predicate.
     *
     * @param {(value: T) => boolean} predicate
     * @returns {number}
     */
    IndexOfFirst.prototype.indexOfFirst = function (predicate) {
        var index = 0;
        for (var item = this.iterator.next(); !item.done; item = this.iterator.next()) {
            if (predicate(item.value)) {
                return index;
            }
            index++;
        }
        return -1;
    };
    return IndexOfFirst;
}());
exports.IndexOfFirst = IndexOfFirst;
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