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'use strict'; const p = console.log; const myIterableObject = { [Symbol.iterator]: () => { let cnt = 0; const iterator = { next: () => { const done = 5 <= cnt; return { value: cnt++, done }; }, }; return iterator; }, }; const processIterable = (iterableObject, callback) => { const iterator = iterableObject[Symbol.iterator](); let ir = iterator.next(); while (!ir.done) { callback(ir); ir = iterator.next(); } }; const mainIterator = () => { p(...myIterableObject); p(...myIterableObject); processIterable(myIterableObject, p); processIterable(myIterableObject, p); }; // module.exports = mainIterator; mainIterator(); |
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0 1 2 3 4 0 1 2 3 4 { value: 0, done: false } { value: 1, done: false } { value: 2, done: false } { value: 3, done: false } { value: 4, done: false } { value: 0, done: false } { value: 1, done: false } { value: 2, done: false } { value: 3, done: false } { value: 4, done: false } |
