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khaledosman/groupBy.js

Created June 24, 2019 12:27
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group an array of objects by a key
Raw
groupBy.js
const groupBy = (items, key) => items.reduce(
(result, item) => ({
...result,
[item[key]]: [
...(result[item[key]] || []),
item
]
}),
{}
)
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