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suissa/groupBy.semantic.js

Created September 9, 2018 06:12
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JavaScript - groupby - mais semantico eh nois q voa bruxaooooo
Raw
groupBy.semantic.js
const group = (obj, field) => obj[field]
const addValue = (result, obj, field) =>
result[obj[field]] || []
const addToGroup = (result, obj, field) =>
[...(addValue(result, obj, field)), obj]
const toNewGroupUsing = (field) => (result, obj) => ({
...result,
[group(obj, field)]: addToGroup(result, obj, field)
})
const groupThis = (list) => (field) =>
list.reduce(toNewGroupUsing(field), {})
const groupBy = groupThis(list)
console.log(
groupBy("level")
)
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