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hectorromo/pick-reject.js

Created December 3, 2019 18:13
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pick and reject
Raw
pick-reject.js
function reject(obj, keys) {
return Object.keys(obj)
.filter(k => !keys.includes(k))
.map(k => Object.assign({}, {[k]: obj[k]}))
.reduce((res, o) => Object.assign(res, o), {});
}
function pick(obj, keys) {
return keys.map(k => k in obj ? {[k]: obj[k]} : {})
.reduce((res, o) => Object.assign(res, o), {});
}
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