33 lines
986 B
JavaScript
33 lines
986 B
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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class SliceIterator {
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/**
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* @param {Iterator<T>} source Source Iterator
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* @param {number} start Zero-based positive start index, inclusive
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* @param {number} end Zero-based positive end index, exclusive, defaults to end of iterator
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*/
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constructor(source, start, end = Infinity) {
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this.source = source;
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this.start = start;
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this.end = end;
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this.i = 0;
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}
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next() {
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// Skip elements before start
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while (this.i < this.start) {
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const result = this.source.next();
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if (result.done) {
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return result;
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}
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this.i++;
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}
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// Finish when end is reached
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this.i++;
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if (this.i >= this.end) {
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return { done: true };
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}
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return this.source.next();
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}
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}
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exports.SliceIterator = SliceIterator;
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//# sourceMappingURL=slice.js.map
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