iteragain/dist/cjs/internal/CachedIterator.js

Javascript Iterable/Iterator/Generator-function utilities.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.CachedIterator = void 0;
/**
 * @deprecated Use `SeekableIterator` instead.
 * @description Caches the values of the input `iterator` into a Map.
 */
class CachedIterator {
    constructor(iterator) {
        this.iterator = iterator;
        this.cache = new Map();
        this.i = 0;
        this.done = false;
    }
    [Symbol.iterator]() {
        return this;
    }
    next(...args) {
        var _a;
        if (this.done)
            return { done: true, value: undefined };
        const next = this.iterator.next(...args);
        if ((this.done = (_a = next.done) !== null && _a !== void 0 ? _a : false))
            return next;
        this.cache.set(this.i++, next.value);
        return next;
    }
}
exports.CachedIterator = CachedIterator;
exports.default = CachedIterator;
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