20 lines
358 B
JavaScript
20 lines
358 B
JavaScript
function Symbol() {}
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Symbol.iterator = '@@iterator';
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var obj = {
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'@@iterator': function() {
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var ttl = 3;
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return {
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next: function() {
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if (ttl === 0) {
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return { done: true, value: null };
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} else {
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return { done: false, value: ttl-- };
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}
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}
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};
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}
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};
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assert.deepEqual([3, 2, 1], [...obj]);
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