Formatting changes
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@ -9,5 +9,5 @@ const powerset = arr => arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r)))
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```
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```js
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powerset([1, 2]); // [[], [1], [2], [2,1]]
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powerset([1, 2]); // [[], [1], [2], [2, 1]]
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```
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