Created
September 10, 2016 17:05
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ES6-ready
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| let output = {} | |
| for (const element of input) { | |
| if (output.hasOwnProperty(element.owner)) { | |
| output[element.owner].push(element.pet) | |
| } else { | |
| output[element.owner] = [element.pet] | |
| } | |
| } |
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