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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeLazy = makeLazy;
class LazyIterableIterator {
constructor(producer) {
this.producer = producer;
}
[Symbol.iterator]() {
if (this.it === undefined) {
this.it = this.producer();
}
return this.it;
}
next() {
if (this.it === undefined) {
this.it = this.producer();
}
return this.it.next();
}
}
function makeLazy(producer) {
return new LazyIterableIterator(producer);
}