iteragain
Version:
Javascript Iterable/Iterator/Generator-function utilities.
38 lines • 1.34 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ChunksIterator = void 0;
/** An iterator that yields non-overlapping values in chunks (tuples) of a certain `size`. */
class ChunksIterator {
constructor(iterator, length, fill) {
this.iterator = iterator;
this.length = length;
this.fill = fill;
this.done = false;
this.chunk = [];
}
[Symbol.iterator]() {
return this;
}
next(...args) {
if (this.done)
return { done: true, value: undefined };
for (let i = 0; i < this.length; i++) {
const next = this.iterator.next(...args);
if (next.done) {
this.done = true;
if (this.chunk.length) {
if (this.fill !== undefined) {
this.chunk = this.chunk.concat(Array.from({ length: this.length - this.chunk.length }, _ => this.fill));
}
break;
}
return { done: true, value: undefined };
}
this.chunk.push(next.value);
}
return { done: false, value: this.chunk.splice(0, this.length) };
}
}
exports.ChunksIterator = ChunksIterator;
exports.default = ChunksIterator;
//# sourceMappingURL=ChunksIterator.js.map